Arthropods, Hexapods & Myriapods (14 Days)

Unit 12 Arthropods, Hexapods & Myriapods

Enduring Understanding: Arthropods have been successful in almost all habitats on the earth. They have adapted successfully to life in water, on land and in the air.

Essential Questions State Benchmark from Course Description SC.912.L.15.7 Discuss distinguishing characteristics of vertebrate and representative invertebrate phyla, and chordate classes using typical examples. What are the general  Students will identify the major characteristics of the phylum characteristics of Arthropods? Arthropoda, including: Metamerism, Exoskeleton (chitin), Bilateral (5 days) Symmetry, Molting/Ecdysis, Jointed Appendages, Open Circulatory System (hemocoel), and Ventral Nerve Cord. {Explain in detail}  Students will know that Arthropods are the most successful phylum of animals, both in diversity of distribution and in numbers of species and individuals.  Students will be aware that Copepods are the most abundant animal in the world.  Students will understand that the evolutionary significance of molting lies in its ability to reduce competition between immature and adult stages of the arthropod. Honors Extension  Students will explore the Subphylum Trilobitomorpha, making special note of its biramous appendages.  Students will know the general features of the subphylum Chelicerata including the location and function of the following structures: Cephalothorax, Chelicerae, Pedipalps.  Students will know the general features of the following classes under the subphylum Chelicerata with accompanying examples for each class: - Class Merostomata (specify the importance of book gills in gaseous exchange) - Class Arachnida ( specify the function of Coxal glands, Malpighian tubules, Book lungs and Sensilla) - Class Pycnogonida  Students will compare and contrast oviparous, ovoviviparous and viviparous. Honors Extension  Students will explore the following orders under the class Arachnida making note of special features and examples: - Order Scorpionida (specify the importance of Prosoma and Pectines) - Order Araneae (specify the importance of Spinnerets and Pedipals) - Order Opiliones - Order Acarina (Specify the importance of Capitulum, modified Chelicerae and Pedipalps)  Students will characterize (emphasis on external features) and state representative examples of the Subphylum Crustacea.  Students will explain the general features of the Class Malacostraca, including external structures, circulatory system, nervous system and endocrine system.  Students will explain the general features of the Class Maxillopoda, including features of the subclass Copepoda and subclass Thecostraca. Enduring Understanding: The subphylum Myriapoda includes four classes of arthropods. Essential Questions State Benchmark from Course Description . SC.912.L.15.7 Discuss distinguishing characteristics of vertebrate and representative invertebrate phyla, and chordate classes using typical examples. What are the general  Students will give the general features of organisms belonging to the characteristics of Myriapods? (3 Subphylum Myriapoda. days)  Students will explore the main features of the following classes under the subphylum Myriapoda: Class Diplopoda (the millipedes) and Class Chilopoda (the centipedes). Honors Extension  Students will explore the main features of the following classes under the subphylum Myriapoda: Class Pauropoda and Class Symphyla.

Enduring Understanding: Animals in the subphylum Hexapoda are characterized by bodies divided into three tagmata, five pairs of head appendages, and three pairs of legs.