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Transcript
Introduction to Animals Worksheet Circle the correct response. 1. Animals are [ heterotrophs / autotrophs ] 2. [ All / Most ] animals are multicellular. 3. The cells in the skin of your hand are [ bigger than / the same size as ] the cells in your heart. 4. Organisms that have 2 copies of each chromosome are [mobile / diploid ] 5. The absence of a cell wall allows animals [ mobility / diploidy ] 6. A hollow ball of cells that forms after fertilization is called a [ blastula / mesoderm ] 7. In all animals except [ humans / sponges ] a zygote undergoes divisions to become a blastula. 8. The cells of animals are organized into functional units called [ blastula / tissues ] Matching: 9. ______ Ectoderm a. lining of the digestive tract, digestive organs 10. ______ Mesoderm b. outer layer of skin and sense organs 11. ______ Endoderm 12. ______ radial c. most of the skeleton, muscles Match the body plan to its description d. body that is irregular shaped 13. ______ bilateral e. has a distinct right and left half 14. ______asymmetry f. body parts arranged around a central axis, like the spokes of a bicycle wheel What symmetry do these animals have? 15. ______________ 16. ____________________ 17. Segmented animals are constructed from a series of repeating units called [segments /vertebrates] 18. Evidence of segmentation in human beings can be seen in the [ skin / backbone ] Match the name of the Phylum to the organism: a. vertebrates 19. _____ Cnidaria b. segmented worms 20. ______ Mollusca c. flatworms 21. _____ Annelida d. jellyfish 22. _____ Chordata e. star fish 23. ______Nematoda f. sponges 24. ______Platyhelminthes g. clams 25. ______ Porifera h. roundworms 26. ______Arthopoda i. insects 27. ______Echinodermata Animal Body Systems For each term below, indicate what body system it relates to. Body Systems 28. Gastrovascular Cavity________ 29. Ganglia______ 30. Hermaphrodite_______ 31. Blood vessels_______ 32. Exoskeleton________ 33. Gills_______ 34. Anus______ 35. Nerve Net______ 36. Hydrostatic______ 37. Gametes_____ 38. Flame cells_______ 39. radula______ 40. trachea & spiracles________ A. B. C. D. E. F. G. Circulatory Excretory Reproductive Support (skeletal) Nervous Respiration Digestive