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Ê Chapter 28 Ð Reading Guide
1. Animals areÊ [ heterotrophs / autotrophs ] Ê
2. [ All / Most ] animals are multicellular. Ê
3. The cells in the skin of your hand are [ bigger thanÊ / the same size as ] the cells in your heart. Ê
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 ]
Match the tissue layer to the part of the body it becomes
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9. ______Ê Ectoderm 10. ______ Mesoderm 11. ______Ê Endoderm |
a. lining of the digestive tract, digestive organs b. outer layer of skin and sense organs c. most of the skeleton, muscles Match the body plan to its description |
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12. ____Ê radial 13. _____ bilateral 14. _____asymmetry |
a. body parts arranged around a central axis, like the spokes of a bicycle wheel b. body that is irregular shaped c. has a distinct right and left half |
What symmetry do these animals have?
15. ___________________ 16.
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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 ] Ê
Match the name of the Phylum to the organism (figure 28-12)
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19. _____Ê Cnidaria 20. ______ Mollusca 21. _____ Annalida 22. _____Ê Chordata 23. ______Nematoda 24. ______Platyhelminthes 25. ______ Porifera 26. ______Arthopoda 27. ______Echinodermata |
a. vertebrates b. segmented worms c. flatworms d. jellyfish e. sea stars f. sponges g. clams h. roundworms i. insects Ê |
28. A [ phylogenetic tree / kingdom ] shows how animals are related throughÊ evolution
29. Cues to animal relationships can be found in the [ class / fossil ] record.
30. Studies of [ fossils / DNA ] showed that pandas are more closely related to bears than to raccoons. Ê
Section 28-2ÊÊ - Animal Body Systems
For each term below, indicate what body system it relates to. Body Systems
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31. Gastrovascular Cavity ____________________________ 32. Ganglia ____________________________ 33. Hermaphrodite ____________________________ 34. Blood vessels ____________________________ 35. Exoskeleton ____________________________ 36. Gills ____________________________ 37. Anus ____________________________ 38. Nerve Net ____________________________ 39. Hydrostatic ____________________________ 40. Gametes ____________________________ |
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