The Life Cycle of a Flowering Plant a Sequencing Activity Based on the Rapid-Cycling Brassica

Total Page:16

File Type:pdf, Size:1020Kb

The Life Cycle of a Flowering Plant a Sequencing Activity Based on the Rapid-Cycling Brassica © SAPS/FSC 2006. · Teacher Guidance The life cycle of a flowering plant A sequencing activity based on the rapid-cycling Brassica The typical life cycle of a flowering plant, using the rapid-cycling Brassica as an example, is summarised in Figure 15. More information about how children can grow this plant in the classroom and observe the life cycle for themselves is given in booklet 3 of this series (Living processes and what plants need to grow). Here we show how this life cycle can be adapted and used as a sequencing activity. This will help children demonstrate their understanding of the progression through the life cycle and reinforce their learning of the different stages covered in these booklets (Parts 1 and 2). On the CD (Part 2) you will find a Pupil Sheet with an outline of this life cycle, with text but without pictures. This template can be printed, enlarged and laminated (see page 3 of this booklet) for use in this activity. The CD (Part 2) also gives templates for the drawings of the different stages of the rapid-cycling Brassica, from seed through to a mature plant with seed pods. You can prepare these and cut them out to make cards so that each child or group has a complete set of pictures. There is also a version on the SAPS website that can be used as an interactive whiteboard resource. The children are then required to place the picture cards in the correct sequence on the outline of the life cycle. ¥ Figure 15. Summary of the life cycle of the rapid-cycling Brassica for use as a sequencing activity. Templates for the life cycle and drawings of the different stages are available on the CD (Part 2). Plants for primary pupils 26 © SAPS/FSC 2006. 27 Pollination, fertilisation, fruits and seed dispersal seed fruitsand fertilisation, Pollination, germination first leaves develop seedling seed pod and seeds mature plant with ripe fruit pods bee carrying pollen to a flower on another plant young plant pollination and fertilisation plant with flowers and some pods plant with flowers.
Recommended publications
  • Gymnosperms the MESOZOIC: ERA of GYMNOSPERM DOMINANCE
    Chapter 24 Gymnosperms THE MESOZOIC: ERA OF GYMNOSPERM DOMINANCE THE VASCULAR SYSTEM OF GYMNOSPERMS CYCADS GINKGO CONIFERS Pinaceae Include the Pines, Firs, and Spruces Cupressaceae Include the Junipers, Cypresses, and Redwoods Taxaceae Include the Yews, but Plum Yews Belong to Cephalotaxaceae Podocarpaceae and Araucariaceae Are Largely Southern Hemisphere Conifers THE LIFE CYCLE OF PINUS, A REPRESENTATIVE GYMNOSPERM Pollen and Ovules Are Produced in Different Kinds of Structures Pollination Replaces the Need for Free Water Fertilization Leads to Seed Formation GNETOPHYTES GYMNOSPERMS: SEEDS, POLLEN, AND WOOD THE ECOLOGICAL AND ECONOMIC IMPORTANCE OF GYMNOSPERMS The Origin of Seeds, Pollen, and Wood Seeds and Pollen Are Key Reproductive SUMMARY Innovations for Life on Land Seed Plants Have Distinctive Vegetative PLANTS, PEOPLE, AND THE Features ENVIRONMENT: The California Coast Relationships among Gymnosperms Redwood Forest 1 KEY CONCEPTS 1. The evolution of seeds, pollen, and wood freed plants from the need for water during reproduction, allowed for more effective dispersal of sperm, increased parental investment in the next generation and allowed for greater size and strength. 2. Seed plants originated in the Devonian period from a group called the progymnosperms, which possessed wood and heterospory, but reproduced by releasing spores. Currently, five lineages of seed plants survive--the flowering plants plus four groups of gymnosperms: cycads, Ginkgo, conifers, and gnetophytes. Conifers are the best known and most economically important group, including pines, firs, spruces, hemlocks, redwoods, cedars, cypress, yews, and several Southern Hemisphere genera. 3. The pine life cycle is heterosporous. Pollen strobili are small and seasonal. Each sporophyll has two microsporangia, in which microspores are formed and divide into immature male gametophytes while still retained in the microsporangia.
    [Show full text]
  • California's Native Ferns
    CALIFORNIA’S NATIVE FERNS A survey of our most common ferns and fern relatives Native ferns come in many sizes and live in many habitats • Besides living in shady woodlands and forests, ferns occur in ponds, by streams, in vernal pools, in rock outcrops, and even in desert mountains • Ferns are identified by producing fiddleheads, the new coiled up fronds, in spring, and • Spring from underground stems called rhizomes, and • Produce spores on the backside of fronds in spore sacs, arranged in clusters called sori (singular sorus) Although ferns belong to families just like other plants, the families are often difficult to identify • Families include the brake-fern family (Pteridaceae), the polypody family (Polypodiaceae), the wood fern family (Dryopteridaceae), the blechnum fern family (Blechnaceae), and several others • We’ll study ferns according to their habitat, starting with species that live in shaded places, then moving on to rock ferns, and finally water ferns Ferns from moist shade such as redwood forests are sometimes evergreen, but also often winter dormant. Here you see the evergreen sword fern Polystichum munitum Note that sword fern has once-divided fronds. Other features include swordlike pinnae and round sori Sword fern forms a handsome coarse ground cover under redwoods and other coastal conifers A sword fern relative, Dudley’s shield fern (Polystichum dudleyi) differs by having twice-divided pinnae. Details of the sori are similar to sword fern Deer fern, Blechnum spicant, is a smaller fern than sword fern, living in constantly moist habitats Deer fern is identified by having separate and different looking sterile fronds and fertile fronds as seen in the previous image.
    [Show full text]
  • The Big Bloom—How Flowering Plants Changed the World
    The Big Bloom—How Flowering Plants Changed the World Written by Michael Klesius Republished from the pages of National Geographic magazine -- July 2002 In the summer of 1973 sunflowers appeared in my father's vegetable garden. They seemed to sprout overnight in a few rows he had lent that year to new neighbors from California. Only six years old at the time, I was at first put off by these garish plants. Such strange and vibrant flowers seemed out of place among the respectable beans, peppers, spinach, and other vegetables we had always grown. Gradually, however, the brilliance of the sunflowers won me over. Their fiery halos relieved the green monotone that by late summer ruled the garden. I marveled at birds that clung upside down to the shaggy, gold disks, wings fluttering, looting the seeds. Sunflowers defined flowers for me that summer and changed my view of the world. Flowers have a way of doing that. They began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago, during the Cretaceous period. That's relatively recent in geologic time: If all Earth's history were compressed into an hour, flowering plants would exist for only the last 90 seconds. But once they took firm root about 100 million years ago, they swiftly diversified in an explosion of varieties that established most of the flowering plant families of the modern world. Today flowering plant species outnumber by twenty to one those of ferns and cone-bearing trees, or conifers, which had thrived for 200 million years before the first bloom appeared.
    [Show full text]
  • Tucson Cactus and Succulent Society Guide to Common Cactus and Succulents of Tucson
    Tucson Cactus and Succulent Society Guide to Common Cactus and Succulents of Tucson http://www.tucsoncactus.org/c-s_database/index.html Item ID: 1 Item ID: 2 Family: Cactaceae Family: Cactaceae Genus: Ferocactus Genus: Echinocactus Species: wislizenii Species: grusonii Common Name: Fishhook Barrel Common Name: Golden Barrel Habitat: Various soil types from 1,000 Cactus to 6,000 feet elevation from grasslands Habitat: Located on rolling hills to rocky mountainous areas. and cliffs. Range: Arizona, southwestern New Range: Limited to small areas in Mexico, limited extremes of western Queretaro, Mexico. The popula- Texas, Sonora, northwest Chihuahua tion had become very low in num- and northern Sinaloa, Mexico bers over the years but is just Care: An extremely easy plant to grow now beginning to increase due to in and around the Tucson area. It re- protective laws and the fact that Photo Courtesy of Vonn Watkins quires little attention or special care as this plant is now in mass cultiva- ©1999 it is perfectly at home in almost any tion all over the world. garden setting. It is very tolerant of ex- Photo Courtesy of American Desert Care: The Golden Barrel has slow- Description treme heat as well as cold. Cold hardi- Plants ly become one of the most pur- This popular barrel cactus is noted ness tolerance is at around 10 degrees chased plants for home landscape for the beautiful golden yellow farenheit. Description in Tucson. It is an easy plant to spines that thickly surround the Propagation: Propagation of this cac- This plant is most recognized by the grow and takes no special care.
    [Show full text]
  • Handouts-Lect. 30 Gymnosperms and Angiosperms.Pdf
    Lecture 30 Gymnosperms and Angiosperms Gymnosperms Gymnosperms means “naked seed” and are are nonflowering plants. Their seeds that do not develop within an enclosed structure. Examples are conifers, cycads, Ginkgo, and Gnetales. Gymnosperm seeds develop either on the surface of scale or a leaf-like appendage of cones or at the end of short stalks. Evolution of gymnosperms Seed ferns were the first seed plants, protecting their reproductive parts in structures called capsules. Seed ferns gave rise to the gymnosperms during the Paleozoic Era, about 390 million years ago. Gymnosperms include the gingkoes and conifers and inhabit many, ecosystem such as the taiga and the alpine forests, because they are well adapted for cold weather. True seed plants became more numerous and diverse during the Carboniferous period around 319 million years ago; an explosion that appears to be due to a whole genome duplication event. Gymnosperms do not depend on water for fertilization (have air‐borne pollen). Life Cycle of Gymnosperms 1. Gymnosperms are vascular plants that produce seeds in cones. Examples include conifers such as pine and spruce trees. The gymnosperm life cycle has a dominant sporophyte generation. Both gametophytes and the next generation’s new sporophytes develop on the sporophyte parent plant. 2. Cones form on a mature sporophyte plant. Inside male cones, male spores develop into male gametophytes. Each male gametophyte consists of several cells enclosed within a grain of pollen. Inside female cones, female spores develop into female gametophytes. Each female gametophyte produces an egg inside an ovule. 3. Pollination occurs when pollen is transferred from a male to female cone.
    [Show full text]
  • JUDD W.S. Et. Al. (2002) Plant Systematics: a Phylogenetic Approach. Chapter 7. an Overview of Green
    UNCORRECTED PAGE PROOFS An Overview of Green Plant Phylogeny he word plant is commonly used to refer to any auto- trophic eukaryotic organism capable of converting light energy into chemical energy via the process of photosynthe- sis. More specifically, these organisms produce carbohydrates from carbon dioxide and water in the presence of chlorophyll inside of organelles called chloroplasts. Sometimes the term plant is extended to include autotrophic prokaryotic forms, especially the (eu)bacterial lineage known as the cyanobacteria (or blue- green algae). Many traditional botany textbooks even include the fungi, which differ dramatically in being heterotrophic eukaryotic organisms that enzymatically break down living or dead organic material and then absorb the simpler products. Fungi appear to be more closely related to animals, another lineage of heterotrophs characterized by eating other organisms and digesting them inter- nally. In this chapter we first briefly discuss the origin and evolution of several separately evolved plant lineages, both to acquaint you with these important branches of the tree of life and to help put the green plant lineage in broad phylogenetic perspective. We then focus attention on the evolution of green plants, emphasizing sev- eral critical transitions. Specifically, we concentrate on the origins of land plants (embryophytes), of vascular plants (tracheophytes), of 1 UNCORRECTED PAGE PROOFS 2 CHAPTER SEVEN seed plants (spermatophytes), and of flowering plants dons.” In some cases it is possible to abandon such (angiosperms). names entirely, but in others it is tempting to retain Although knowledge of fossil plants is critical to a them, either as common names for certain forms of orga- deep understanding of each of these shifts and some key nization (e.g., the “bryophytic” life cycle), or to refer to a fossils are mentioned, much of our discussion focuses on clade (e.g., applying “gymnosperms” to a hypothesized extant groups.
    [Show full text]
  • Flowering Plants; They Were Too Numerous and Too Varied, and There Were Too Few Fos- Sils to Sort out Which Were More Primitive
    NEWSFOCUS embryo that serves as its food supply. Darwin was perplexed by the diversity of On the Origin of flowering plants; they were too numerous and too varied, and there were too few fos- sils to sort out which were more primitive. Flowering Plants Throughout much of the 20th century, mag- nolia relatives with relatively large flowers were leading candidates for the most primi- how flowers got started—and from which tive living flowers, although a few ancestor. Today, researchers have analytical researchers looked to small herbs instead. tools, fossils, genomic data, and insights that In the late 1990s, molecular systematics Darwin could never have imagined, all of came to the rescue, with several reports pre- which make these mysteries less abom- senting a fairly consistent picture of the inable. Over the past 40 years, techniques lower branches of the angiosperm tree. An for assessing the relationships between obscure shrub found only in New Caledonia organisms have greatly improved, and gene emerged as a crucial window to the past. sequences, as well as morphology, now help Amborella trichopoda, with its 6-millimeter researchers sort out which angiosperms greenish-yellow flowers, lives deep in the arose early and which arose late. New fossil cloud forests there. In multiple gene-based finds and new ways to study them—with assessments, including an analysis in 2007 synchrotron radiation, for example—pro- of 81 genes from chloroplast genomes vide a clearer view of the detailed anatomy belonging to 64 species, Amborella sits of ancient plants. And researchers from var- at the base of the angiosperm family tree, ious fields are figuring out genomic changes the sister group of all the rest of the that might explain the amazing success of angiosperms.
    [Show full text]
  • Plant Identification Categories
    Plant Identification Categories Field guides and internet resources are available for each of the highlighted categories. Non-vascular plant — Does not use a system of vessels to transport water and nutrients between different parts of the plant. Moss A type of green plant with very small leaves and no flowers; can be found growing on rocks, bark, or wet ground. Vascular plant — Has lignified tissues (xylem, phloem) to transport water, nutrients and photosynthetic products throughout the plant. A. Fern Seedless, non-flowering plant, of tropical to temperate regions, characterized by true roots produced from a rhizome, triangular fronds that uncoil upward and have a branching vein system, and reproduction by spores contained in sporangia that appear as brown dots on the underside of the fronds. B. Herbaceous Flowering plant whose leaves and stems die down to the soil level at the end of the growing season (no persistent above-ground woody tissue); includes forbs and graminoids. 1. Forb — Any broad-leaved non-woody herbaceous plant which is not a grass, sedge or rush. wildflower — Uncultivated flowering plant. aquatic — Grows in water or swampy area. vine — Stem requires support; climbs by tendrils or twining, or creeps along the ground. © 2011, Angelyn Whitmeyer, all rights reserved. ❏❏❏ www.IdentifyThatPlant.com 2. Graminoid — Grass-like herbaceous plant with leaves that are mostly very narrow or linear in outline. grass — “True grass” with jointed stems, slender sheathing leaves, and flowers borne in spikelets. sedge — Typically grows on wet ground and has rhizomes, triangular stems, and minute flowers in spikelets. rush — Distinguished by cylindrical stalks or hollow, stemlike leaves growing in moist or shady locations.
    [Show full text]
  • Life Cycle of a Flowering Plant
    Nonfiction Read & Write Booklets: Science © 2010 by Scholastic Teaching Resources • Pa g e 25 My Seed Picture Life Cycle of a Draw and label the parts of a seed. Use the diagram on page 1 to help you. Flowering Plant Write one fact you learned about the life cycle of a flowering plant. 7 by ______________________________________ Nonfiction Read & Write Booklets: Science © 2010 by Scholastic Teaching Resources • Pa g e 26 It’s All in the Seed How do each of the following help plants grow? A plant’s life begins with its seed. The seed has everything it needs to grow into a plant. Insects: It houses the embryo, or baby plant. It also holds food for the embryo to use as it grows. leaves 2 root Pollen sticks to Animals: the insects, which embryo carry it to other flowers. food The pollen storage fertilizes eggs in other blossoms. This is called coat pollination. 1 6 Nonfiction Read & Write Booklets: Science © 2010 by Scholastic Teaching Resources • Pa g e 27 Life Cycle of a A coat protects us from the cold. Why do you Flowering Plant think seeds have coats? 1 Flowers grow on the 5 plant. The blossoms attract A new plant grows. insects. Why do you think seeds have their own food storage? 4 Animals 3 spread the Fruit grows on the plant. seeds through Animals eat the fruit their waste. and its seeds. 5 2 Nonfiction Read & Write Booklets: Science © 2010 by Scholastic Teaching Resources • Pa g e 28 From Seed to Plant What happens to a seed after you plant it? Follow the steps to find out! blossom leaf bud shoot leaf seed stem root 1 2 3 4 The seed becomes The roots grow deep The shoot is now The plant grows soaked with water.
    [Show full text]
  • Plant Reproduction
    AccessScience from McGraw-Hill Education Page 1 of 10 www.accessscience.com Plant reproduction Contributed by: Scott D. Russell Publication year: 2014 The formation of a new plant that is either an exact copy or recombination of the genetic makeup of its parents. There are three types of plant reproduction considered here: (1) vegetative reproduction, in which a vegetative organ forms a clone of the parent; (2) asexual reproduction, in which reproductive components undergo a nonsexual form of production of offspring without genetic rearrangement, also known as apomixis; and (3) sexual reproduction, in which meiosis (reduction division) leads to formation of male and female gametes that combine through syngamy (union of gametes) to produce offspring. See also: PLANT; PLANT PHYSIOLOGY. Vegetative reproduction Unlike animals, plants may be readily stimulated to produce identical copies of themselves through cloning. In animals, only a few cells, which are regarded as stem cells, are capable of generating cell lineages, organs, or new organisms. In contrast, plants generate or produce stem cells from many plant cells of the root, stem, or leaf that are not part of an obvious generative lineage—a characteristic that has been known as totipotency, or the general ability of a single cell to regenerate a whole new plant. This ability to establish new plants from one or more cells is the foundation of plant biotechnology. In biotechnology, a single cell may be used to regenerate new organisms that may or may not genetically differ from the original organism. If it is identical to the parent, it is a clone; however, if this plant has been altered through molecular biology, it is known as a genetically modified organism (GMO).
    [Show full text]
  • Care of Flowering Potted Plants
    ■ ,VVXHG LQ IXUWKHUDQFH RI WKH &RRSHUDWLYH ([WHQVLRQ :RUN$FWV RI 0D\ DQG -XQH LQ FRRSHUDWLRQ ZLWK WKH 8QLWHG 6WDWHV 'HSDUWPHQWRI$JULFXOWXUH 'LUHFWRU&RRSHUDWLYH([WHQVLRQ8QLYHUVLW\RI0LVVRXUL&ROXPELD02 LAWN ■ ■ ■ DQHTXDORSSRUWXQLW\$'$LQVWLWXWLRQ H[WHQVLRQPLVVRXULHGX AND GARDEN Care of Flowering Potted Plants African violet Outstanding among small, flowering potted plants, African violets in a good location should flower without interruption for years (Figure 1). In addition to their free-blooming character, they are well adapted to home conditions, easy to propagate and available in a wide range of flower colors. Miniatures as well as more compact standard varieties are usable in limited space. Care of the new plant • Maintain night temperatures between 65 and 70 degrees F; day temperatures 10 degrees warmer. Do not expose to temperatures below 60 or above 80 degrees F. • Place in windows with bright light but no direct sunlight. Some midwinter sunlight is not harmful, but avoid it at other times of the year. If no suitable window space is available, plants grow well in fluorescent light. Place about 8 to 12 inches beneath cool white fluorescent tubes lit about 14 hours daily. Figure 1. African violet. • Water frequently enough to keep soil moist, but allow slight drying between waterings. They are easily killed by Amaryllis excess soil moisture. Wick watering is adaptable. Amaryllis (Figure 2) produce large, showy flowers • Humidity is important. In homes with low humidity, before most of the foliage develops. Large bulbs produce place on trays of gravel containing water. Home two stems of flowers; smaller bulbs usually have only one. humidifiers can help. Bulbs ready for bloom or plants with bloom stalks started are available in early winter.
    [Show full text]
  • Trees, Shrubs, and Perennials That Intrigue Me (Gymnosperms First
    Big-picture, evolutionary view of trees and shrubs (and a few of my favorite herbaceous perennials), ver. 2007-11-04 Descriptions of the trees and shrubs taken (stolen!!!) from online sources, from my own observations in and around Greenwood Lake, NY, and from these books: • Dirr’s Hardy Trees and Shrubs, Michael A. Dirr, Timber Press, © 1997 • Trees of North America (Golden field guide), C. Frank Brockman, St. Martin’s Press, © 2001 • Smithsonian Handbooks, Trees, Allen J. Coombes, Dorling Kindersley, © 2002 • Native Trees for North American Landscapes, Guy Sternberg with Jim Wilson, Timber Press, © 2004 • Complete Trees, Shrubs, and Hedges, Jacqueline Hériteau, © 2006 They are generally listed from most ancient to most recently evolved. (I’m not sure if this is true for the rosids and asterids, starting on page 30. I just listed them in the same order as Angiosperm Phylogeny Group II.) This document started out as my personal landscaping plan and morphed into something almost unwieldy and phantasmagorical. Key to symbols and colored text: Checkboxes indicate species and/or cultivars that I want. Checkmarks indicate those that I have (or that one of my neighbors has). Text in blue indicates shrub or hedge. (Unfinished task – there is no text in blue other than this text right here.) Text in red indicates that the species or cultivar is undesirable: • Out of range climatically (either wrong zone, or won’t do well because of differences in moisture or seasons, even though it is in the “right” zone). • Will grow too tall or wide and simply won’t fit well on my property.
    [Show full text]