DOCSLIB.ORG

A) Species of Organisms Found on Earth Today Have Adaptations Not

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
A) Species of Organisms Found on Earth Today Have Adaptations Not 1. The theory of biological evolution includes which 5. The changes in foot structure in a bird population over concepts? many generations are shown in the diagram below. A) species of organisms found on Earth today have adaptations not always found in earlier species B) fossils are the remains of present-day species and were all formed at the same time C) individuals may acquire physical characteristics after birth and pass these acquired characteristics on to their offspring. These changes can best be explained by the concept D) the smallest organisms are always eliminated by of the larger organisms within the ecosystem A) evolution 2. Some behaviors such as mating and caring for young B) extinction are genetically determined in certain species of birds. The presence of these behaviors is most likely due to C) stable gene frequencies the fact that D) use and disuse A) birds do not have the ability to learn 6. The diversity of organisms present on Earth is the B) individual birds need to learn to survive and result of reproduce A) ecosystem stability B) homeostasis C) these behaviors helped birds to survive in the C) natural selection D) direct harvesting past 7. Most species on Earth have changed through time. D) within their lifetimes, birds developed these This change is known as behaviors A) isolation B) geology 3. In order for a species to evolve, it must be able to C) ecology D) evolution A) consume a large quantity of food 8. A species of bird known as Bird of Paradise has been B) reproduce successfully observed in the jungles of New Guinea. The males C) maintain a constant body temperature shake their bodies and sometimes hang upside down D) be domesticated to show off their bright colors and long feathers to 4. Which statement concerning production of offspring attract females. Females usually mate with the is correct? "flashiest" males. These observations support the concept that A) Production of offspring is necessary for a species to survive, but it is not necessary for an A) unusual courtship behaviors lead to extinction individual to survive. B) some organisms are better adapted for asexual B) An organism can reproduce without performing reproduction any of the other life processes. C) homeostasis in an organism is influenced by C) Production of offspring is necessary for an physical characteristics individual organism to survive, while the other D) behaviors that lead to reproductive success have life processes are important for a species to evolved survive. D) Reproduction is a process that requires gametes in all species. 9. Base your answer to the following question on the diagram below. Which concept is best illustrated by the physical variations in the horse as its body size and structure change over time? A) acquired characteristics B) artificial selection C) intermediate inheritance D) organic evolution 10. The graph below represents the populations of two different species in an ecosystem over a period of several years. Which statement is a possible explanation for the changes shown? A) Species A is better adapted to this environment. B) Species A is the predator of Species B. C) Species B is better adapted to this environment. D) Species B is a parasite that has benefited species A. 11. The graph below shows the results of an 12. After the Industrial Revolution, dark-colored moths investigation related to evolution. outnumbered light-colored moths in certain regions of England. Within the past 40 years, factories in these regions have added scrubbers and air purifiers to their smokestacks, and the relative number of light-colored moths has increased. The probable reason for this increase is that A) the allele for light color became dominant over the allele for dark color B) the environment favored the survival of light-colored moths over dark-colored moths C) dark-colored moths turned light because they needed to survive D) overpopulation occurred and most of the light-colored moths died, leaving only This graph was most likely developed from data dark-colored moths to reproduce involving a study of the A) transmission of acquired characteristics B) concept of punctuated equilibrium C) concept of gradualism D) variation within a species 13. A trait with low survival value to the members of a population will most likely A) undergo a series of mutations in succeeding generations B) cause the reproduction rate in individual organisms to increase C) decrease in frequency from one generation to the next D) remain unchanged in frequency through many generations 14. Which best defines the term natural selection? A) survival of the strongest organisms B) elimination of the smallest organisms by the largest organisms C) survival of those organisms genetically best adapted to the environment D) survival and reproduction of those organisms that occupy the largest area in an environment 15. Which concept includes the other three? A) competition B) survival of the fittest C) natural selection D) overproduction 16. The diagram below represents the relationship between natural selection and variation. The arrow between them is labeled X. Which phrase best indicates the meaning of the arrow labeled X? A) is dependent on B) increases the rate of C) decreases the rate of D) is independent of 17. The table below shows adaptations in two organisms. The presence of these adaptations is most likely the result of A) reproductive technology B) natural selection C) asexual reproduction D) human interference 18. Base your answer to the following question on the information below and on your knowledge of biology. Yes, This Big Lizard is Pink A new study from the University of Rome Tor Vergata shows that a rare strawberry-tinted land iguana [rosada iguana] in the Galapagos Islands is genetically distinct from other iguanas there, having diverged from them more than five million years ago as the archipelago [a group of islands] formed. The rosada iguana—which escaped Darwin's notice—was discovered only recently, largely because it lives on the desolate slopes of an active volcano. Source: Smithsonian, March 2009 Which diagram best represents the evolutionary pathway of the strawberry-tinted iguana? A) 1 B) 2 C) 3 D) 4 19. Which concept about variations is included in the modern theory of evolution? A) Variations occur in animals, but not in plants. B) Variations are acquired and will appear in the offspring. C) Variations are the result of overproduction. D) Variations influence the survival of the individual. 20. Characteristics that are harmful to a species tend to decrease in frequency from generation to generation because these characteristics usually A) have a high survival value for the species B) have a low survival value for the species C) are inherited by more individuals D) affect only the older members of the population 21. Darwin's theory of evolution is based on A) variation and natural selection B) use and disuse C) spontaneous genetic mutations D) transmission of acquired characteristics 22. The diagram below represents the same field of mice hunted by a hawk over a period of three months. The overall changes in the population of mice can be explained best by A) natural selection B) succession C) reproduction D) mouse extinction 23. The concept that new varieties of organisms are still 27. Certain insects resemble the bark of the trees on evolving is best supported by the which they live. Which statement provides a possible biological explanation for this resemblance? A) increasing need for new antibiotics B) increasing number of individuals in the human A) The insects needed camouflage so they population developed protective coloration. C) decreasing number of new fossils discovered in B) Natural selection played a role in the undisturbed rock layers development of this protective coloration. D) decreasing activity of photosynthetic organisms C) The lack of mutations resulted in the protective due to warming of the atmosphere coloration. 24. The teeth of carnivores are pointed and are good for D) The trees caused mutations in the insects that puncturing and ripping flesh. The teeth of herbivores resulted in protective coloration. are flat and are good for grinding and chewing. 28. Certain antibacterial soaps kill 99% of the bacteria Which statement best explains these observations? present on hands. Constant use of these soaps could be harmful over time because A) Herbivores have evolved from carnivores. B) Carnivores have evolved from herbivores. A) more pathogens may be resistant to the soap C) The two types of teeth most likely evolved as a B) microbes prevent viral diseases result of natural selection. C) large populations of pathogens are beneficial to D) The two types of teeth most likely evolved as a the hands result of the needs of an organism. D) the soap stimulates skin cell division 25. Which statement is not part of the concept of natural 29. Base your answer to the following question on The selection? diagram below illustrates the change that occurred in the physical appearance of a rabbit population over a A) Individuals that possess the most favorable 10-year period. variations will have the best chance of reproducing. B) Variation occurs among individuals in a population. C) More individuals are produced than will survive. D) Genes of an individual adapt to a changing environment. 26. In a study of tree snails living on a peninsula, Which condition would explain this change over differences were seen in the radula, a tongue-like time? organ with a circular arrangement of teeth. In each species, the shape of the teeth was modified to allow A) a decrease in the mutation rate of the rabbits for the ingestion of different food materials. These with black fur differently shaped teeth are an example of B) a decrease in the advantage of having white fur A) transmission of acquired characteristics C) an increase in the advantage of having white fur B) adaptation to environmental factors D) an increase in the chromosome number of the rabbits with black fur C) overproduction D) geographic isolation 30.
Load more

Recommended publications
  • Size Limits of Very Small Microorganisms
    Size Limits of Very Small Microorganisms Proceedings of a Workshop Steering Group for the Workshop on Size Limits of Very Small Microorganisms Space Studies Board Commission on Physical Sciences, Mathematics, and Applications National Research Council NATIONAL ACADEMY PRESS Washington, D.C. NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the steering group responsible for the report were chosen for their special competences and with regard for appropriate balance. The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to it by the Congress in 1863, the Academy has a mandate that requires it to advise the federal government on scientific and technical matters. Dr. Bruce Alberts is president of the National Academy of Sciences. The National Academy of Engineering was established in 1964, under the charter of the National Academy of Sciences, as a parallel organization of outstanding engineers. It is autonomous in its administration and in the selection of its members, sharing with the National Academy of Sciences the responsibility for advising the federal government. The National Academy of Engineering also sponsors engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achievements of engineers.
    [Show full text]
  • Animal Body Size
    introduction On Being the Right Size: The Impor tance of Size in Life History, Ecology, and Evolution Felisa A. Smith and S. Kathleen Lyons “For every type of animal there is an optimum size.” —J. B. S. Haldane, “On Being the Right Size” iving things vary enormously in body size. Across the spectrum of Llife, the size of animals spans more than twenty-one orders of mag- nitude, from the smallest (mycoplasm) at ∼10 –13 g to the largest (blue whale) at 108 g (fi g. I.1, table I.1). We now know that much of this range was achieved in two “jumps” corresponding to the evolution of eukary- otes and metazoans, at 2.1 Ga and 640 Ma, respectively (Payne et al. 2009). Yet the drivers behind these jumps, the factors underlying similar- ities and differences in body size distributions, and the factors selecting for the “characteristic” or “optimum” size of organisms remain unre- solved (Smith et al. 2004; Storch and Gaston 2004). The study of body size has a long history in scientifi c discourse. Some of our earliest scientifi c treatises speculate on the factors underlying the body mass of organisms (e.g., Aristotle 347–334 B.C.). Many other emi- nent scientists and philosophers, including Galileo Galilei, Charles Dar- win, J. B. S. Haldane, George Gaylord Simpson, and D’Arcy Thompson, have also considered why organisms are the size they are and the con- sequences of larger or smaller size. As Galileo stated, “Nature cannot produce a horse as large as twenty ordinary horses or a giant ten times taller than an ordinary man unless by miracle or by greatly altering the proportions of his limbs and especially of his bones” (Galileo 1638).
    [Show full text]
  • The Ocean Biosphere: from Microbes to Mammals
    Keywords: biosphere, bioaccumulate, biodiversity, food web, ecology, abiotic factors, and biotic factors. Lesson II: The Ocean Biosphere: From Microbes to Mammals Planet Earth is truly a water environments is called ecology. planet! We have a connection to all Living things such as plants and living things in the ocean, from the animals in the environment are called microscopic floating plants that biotic factors, or biota. Nonliving supply us with the oxygen we breathe, things in the environment, such as to the huge blue whale that fills its soil, water, temperature, light, belly with a ton of krill. This circle of salinity, chemical composition, and life is called a biosphere. The earth’s currents are abiotic factors. biosphere is composed of all living Together, these factors interact and things, from the deepest oceans to the function as an ecosystem. An upper atmosphere. It includes all the ecosystem is a community of different air, land and water where life exists. organisms interacting with the abiotic All living things depend upon and parts of its environment. Ecosystems interact with each other and with the may be as small as a beehive, or as non-living things in their large as the Atlantic Ocean. With the environment. aid of technology, we are discovering The study of interactions entire new ecosystems that survive in between organisms and their our biosphere. Our Ocean Biosphere Look at an atlas of the world animals. A few abiotic factors are and identify one of the major oceans temperature, salinity, pressure, found on planet earth. In short, the dissolved gases and depth.
    [Show full text]
  • Microbial Cooking, Cleaning, and Control Under Stress
    life Review Housekeeping in the Hydrosphere: Microbial Cooking, Cleaning, and Control under Stress Bopaiah Biddanda 1,* , Deborah Dila 2 , Anthony Weinke 1 , Jasmine Mancuso 1 , Manuel Villar-Argaiz 3 , Juan Manuel Medina-Sánchez 3 , Juan Manuel González-Olalla 4 and Presentación Carrillo 4 1 Annis Water Resources Institute, Grand Valley State University, Muskegon, MI 49441, USA; [email protected] (A.W.); [email protected] (J.M.) 2 School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53204, USA; [email protected] 3 Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; [email protected] (M.V.-A.); [email protected] (J.M.M.-S.) 4 Instituto Universitario de Investigación del Agua, Universidad de Granada, 18071 Granada, Spain; [email protected] (J.M.G.-O.); [email protected] (P.C.) * Correspondence: [email protected]; Tel.: +1-616-331-3978 Abstract: Who’s cooking, who’s cleaning, and who’s got the remote control within the waters blan- keting Earth? Anatomically tiny, numerically dominant microbes are the crucial “homemakers” of the watery household. Phytoplankton’s culinary abilities enable them to create food by absorbing sunlight to fix carbon and release oxygen, making microbial autotrophs top-chefs in the aquatic kitchen. However, they are not the only bioengineers that balance this complex household. Ubiqui- tous heterotrophic microbes including prokaryotic bacteria and archaea (both “bacteria” henceforth), Citation: Biddanda, B.; Dila, D.; eukaryotic protists, and viruses, recycle organic matter and make inorganic nutrients available to Weinke, A.; Mancuso, J.; Villar-Argaiz, primary producers. Grazing protists compete with viruses for bacterial biomass, whereas mixotrophic M.; Medina-Sánchez, J.M.; protists produce new organic matter as well as consume microbial biomass.
    [Show full text]
  • Viral Genetic Evolution in Host Cells Supports Tumorigenesis
    Short Communication Adv Res Gastroentero Hepatol Volume 4 Issue 2 - March 2017 DOI: 10.19080/ARGH.2017.03.555631 Copyright © All rights are reserved by Daniel A Achinko Viral Genetic Evolution in Host Cells Supports Tumorigenesis Daniel A Achinko* University City Science Center, USA Submission: March 01, 2017; Published: March 23, 2017 *Corresponding author: Daniel A Achinko, University City Science Center, PepVax, Inc.10411 Motor City Drive Bethesda, MD 20817, Immage Biotherapeutics Corp, 3711 Market St. 8th Floor, Philadelphia, PA 19104, USA, Email: Abstract Cancer genetics now associates several virus types to the disease. Six main viruses are considered underlying pathogenic agents of cancer and more of them are DNA viruses while a few are RNA retroviruses. The role of viruses in cancer is still elusive though several host cell genetic are different in the type of genetic material they carry but what makes them common to severe disease situations could be their ability to integrateexpression host patterns, genome, regulatory hence exploiting mechanisms the host and transcription genetic variations and translation have been factors identified to drive and theirassociated replication with relatedand encapsulation viral activity. of Virusesgenetic to immune target cells could be of therapeutic importance if these mechanisms are well understood. information for delivery out of the cell. The variation of these viruses in different cancer types and their evolutionary history with specificity Background until experimental analysis was able to show that, a virus was Viruses are considered the smallest organisms and known to bemetabolically inert out of a host cell but become active when they integrate and infect a host cell in order to reproduce.
    [Show full text]
  • NECR252 Edition 1 Development of DNA Applications in Natural
    Natural England Commissioned Report NECR252 Development of DNA applications in Natural England 2016/2017 First published August 2018 www.gov.uk/natural-england Foreword Natural England commission a range of reports from external contractors to provide evidence and advice to assist us in delivering our duties. The views in this report are those of the authors and do not necessarily represent those of Natural England. Background DNA based applications have the potential to There are still significant limitations to the use of significantly change how we monitor this technology in others areas and in 2016/17 biodiversity and which species and taxa we Natural England worked with NatureMetrics on a monitor. These techniques may provide number of exploratory projects looking at species cheaper alternatives to existing species detection in standing freshwaters, saline lagoons, monitoring, an ability to detect species that we coastal waters and sediments, terrestrial do not currently monitor effectively and the invertebrate traps, deadwood mould, vegetation potential to develop new measures of habitat and soils. This report presents the results from and ecosystem quality. those projects. Natural England has been supporting the This report should be cited as: development of DNA techniques for a number TANG, C.Q., CRAMPTON-PLATT, A., of years. The use of environmental DNA TOWNEND, S., BRUCE, K., BISTA, I. & CREER, (eDNA) to determine the presence or absence S. 2018. Development of DNA applications in of great crested newts in ponds is now a Natural
    [Show full text]
  • Life: Complexity and Diversity 3
    SERIES I ARTICLE Life: Complexity and Diversity 3. Growing Larger Madhav Gadgil Living organisms continually evolve to occupy newer envi­ ronmental regimes. In the process they develop more complex structures and grow to larger sizes. They also evolve more intricate ways of relating to each other. The larger, more complex organisms do not replace the simpler, smaller ones, rather they come to coexist with them in increasingly complex ecosystems. This promotes a con­ Madhav Gadgil is with the Centre for Ecological tinual increase in the diversity of life over evolutionary time. Scienc'es, Indian Institute of Science and Jawaharlal Ways of Life Nehru Centre for Advanced Scientific Research, Bangalore. Decomposing, photosynthesizing and feeding on other organ­ His fascination for the isms are three broad ways of organizing fluxes of energy necessary diversity of life has for the maintenance and propagation of all life (Figure 1). But prompted him to study a whole range of life forms from paper wasps to anchovies, mynas to elephants, goldenrods to bamboos. Figure 1 Decomposition/ or living off preformed or­ ganic molecules is the old­ est way of life and is still at the centre of both te"es­ trial and aquatic food webs. Autotrophy, or manufacture of organic molecules through photosynthesis came next; followed later by heterotrophy or feeding on other living organisms giving rise to the elaborate food webs of present day ecosystems. _________ ~AAA~~______ __ RESONANCE I April 1996 ~"V V VV V v~ 15 SERIES I ARTICLE As living organisms living organisms have created an infinity of variations around have adopted these these themes.
    [Show full text]
  • Arctic Food Webs – Teacher
    Life Under the Ice Unit II: Sea Ice Ecology Arctic Food Webs ACTIVITY TIME 40-50 minutes LEARNING OUTCOMES • Discuss roles of primary producers and consum- ers in a food web. • Describe food web interac- tions specific to the arctic sea ice. • Illustrate an arctic marine food web. OVERVIEW In this activity students work in groups to develop an arctic marine food web. Groups then move through the classroom viewing each others’ food webs and adding their own information. FLOW 1. Watch video & explore 4. Graffiti activity with food webs. Interactive Food Web. 5. Interpretation of student food 2. Brainstorm a list of marine webs. arctic organisms. 6. Discussion questions. 3. Student groups create food webs. ArcticSeaIce.com THE ARCTIC SEA ICE EDUCATIONAL PACKAGE TEACHER VERSION 1 Arctic Food Webs D CONTENTS Student Overview 2 Discussion Questions 9 Background 3 Extensions 11 Preparation 6 Sources 11 Procedure 7 Attribution 11 STUDENT OVERVIEW WHY? HOW? Food webs help us understand the interconnected nature of ecosystems. They help Watch a video showing numerous us understand human’s place in ecosystems. play-circle sea ice organisms WHAT? Learn the Inuktitut names and leaf Inuit knowledge species • The organisms that live in a sea ice ecosystem. In groups, choose a species to • The predator and prey relationships paw focus on between these species. Create a food web Talk about your findings and make connections Image 1 Narwal swim through a lead in the sea ice. 2 TEACHER VERSION THE ARCTIC SEA ICE EDUCATIONAL PACKAGE ArcticSeaIce.com Life Under the Ice Unit II: Sea Ice Ecology BACKGROUND VOCABULARY abiotic: Non-living ele- “Cree and Inuit observe and respect a natural order of relationships ments of an ecosystem, connecting the largest animals to the smallest organisms.
    [Show full text]
  • Protists Are Microbes Too: a Perspective
    The ISME Journal (2009) 3, 4–12 & 2009 International Society for Microbial Ecology All rights reserved 1751-7362/09 $32.00 www.nature.com/ismej PERSPECTIVE Protists are microbes too: a perspective David A Caron1, Alexandra Z Worden2, Peter D Countway1, Elif Demir2 and Karla B Heidelberg1 1Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA and 2Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA Our understanding of the composition and activities of microbial communities from diverse habitats on our planet has improved enormously during the past decade, spurred on largely by advances in molecular biology. Much of this research has focused on the bacteria, and to a lesser extent on the archaea and viruses, because of the relative ease with which these assemblages can be analyzed and studied genetically. In contrast, single-celled, eukaryotic microbes (the protists) have received much less attention, to the point where one might question if they have somehow been demoted from the position of environmentally important taxa. In this paper, we draw attention to this situation and explore several possible (some admittedly lighthearted) explanations for why these remarkable and diverse microbes have remained largely overlooked in the present ‘era of the microbe’. The ISME Journal (2009) 3, 4–12; doi:10.1038/ismej.2008.101; published online 13 November 2008 Keywords: protists; eukaryotic genomics; species concept; diversity; biogeography Introduction research activity has lagged behind that of other microbes despite their rather impressive contribu- Environmental science has clearly entered the ‘era tions to microbiological history, microbial diversity of the microbe’ during the past decade.
    [Show full text]
  • Body Size Evolution Across the Geozoic
    EA44CH20-Smith ARI 4 May 2016 14:25 V I E E W R S I E N C N A D V A Body Size Evolution Across the Geozoic 1, 2 2 Felisa A. Smith, ∗ Jonathan L. Payne, Noel A. Heim, Meghan A. Balk,1 Seth Finnegan,3 MichałKowalewski,4 S. Kathleen Lyons,5 Craig R. McClain,6 Daniel W. McShea,7 Philip M. Novack-Gottshall,8 Paula Spaeth Anich,9 and Steve C. Wang10 1Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131; email: [email protected] 2Department of Geological Sciences, Stanford University, Stanford, California 94305 3Department of Integrative Biology, University of California, Berkeley, California 94720 4Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611 5Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560 6National Evolutionary Synthesis Center, Durham, North Carolina 27705 7Department of Biology, Duke University, Durham, North Carolina 27708 8Department of Biological Sciences, Benedictine University, Lisle, Illinois 60532 9Department of Biology and Natural Resources, Northland College, Ashland, Wisconsin 54806 10Department of Mathematics and Statistics, Swarthmore College, Swarthmore, Pennsylvania 19081 Annu. Rev. Earth Planet. Sci. 2016. 44:523–53 Keywords The Annual Review of Earth and Planetary Sciences is allometry, biovolume, maximum body size, macroevolution, geobiology online at earth.annualreviews.org This article’s doi: Abstract 10.1146/annurev-earth-060115-012147 The Geozoic encompasses the 3.6 Ga interval in Earth history when life has Copyright c 2016 by Annual Reviews. ⃝ existed. Over this time, life has diversified from exclusively tiny, single-celled All rights reserved organisms to include large, complex multicellular forms.
    [Show full text]
  • The Evolution of Monogenean Diversity
    International Journal for Parasitology 32 (2002) 245–254 www.parasitology-online.com Invited review The evolution of monogenean diversity Robert Poulin* Department of Zoology, University of Otago, P.O. Box 56, Dunedin, New Zealand Received 10 April 2001; received in revised form 10 September 2001; accepted 28 September 2001 Abstract The Monogenea are an ideal group for investigations of the processes behind their past diversification and their present diversity for at least three reasons: they are diverse both in terms of morphology and numbers, they are generally host specific, and their phylogeny is well resolved, at least to the family level. The present investigation takes a broad look at monogenean diversity in order to try to determine whether the diversification of monogeneans is driven by some ecological features of the parasites themselves, or by extrinsic factors associated with their hosts. First, our current knowledge of monogenean diversity appears good enough to warrant investigation into its evolution. The body size of new species correlates negatively with their year of description both generally and within given families, i.e. it decreases over time in a way that suggests that only some of the smallest species are left to be discovered. Second, the occurrence of congeneric monogenean species on the same host species is not associated with host body size, once phylogenetic influences are controlled. This analysis suggests that host size is not one of the factors promoting local diversification of monogenean taxa. Third, the species richness of the different monogenean families does not correlate with the average body size of their members.
    [Show full text]
  • Arctic Food Webs ACTIVITY TIME
    Life Under the Ice Unit II: Sea Ice Ecology Arctic Food Webs ACTIVITY TIME 40-50 minutes LEARNING OUTCOMES • Discuss roles of primary producers and consum- ers in a food web. • Describe food web interac- tions specific to the arctic sea ice. • Illustrate an arctic marine food web. OVERVIEW WHY? HOW? Food webs help us understand the Watch a video showing interconnected nature of ecosystems. numerous sea ice They help us understand human’s play-circle organisms place in ecosystems. Learn the Inuktitut WHAT? names and Inuit leaf knowledge species • The organisms that live in a sea In groups, choose a ice ecosystem. paw species to focus on • The predator and prey relationships between these species. Create a food web Talk about your findings and make connections ArcticSeaIce.com THE ARCTIC SEA ICE EDUCATIONAL PACKAGE STUDENT VERSION 1 Arctic Food Webs D CONTENTS Preparation 2 Discussion Questions 6 Background 3 PREPARATION RESOURCES Sea Ice Ecology video From majestic narwhals swimming along a crack in the ice to mighty walrus basking on the spring ice, this short video montage shows many different creatures that live in the Arctic marine ecosystems. https://arcticeider.com/links/afw03 Interactive Food Web & Wildlife Profiles Access profiles of arctic marine wildlife and use the interactive food web to visualize connections between species. https://arcticeider.com/links/afw04 Food Web Sorter SMART Notebook Activity Smart Notebook file which can be used to explain basic trophic levels. Student can come up to the board and drag the creature icons to the correct location. https://arcticeider.com/links/afw1 Image 1 A snowy owl looks for dinner.
    [Show full text]