Match each animal with the body part(s) it possesses. 1. Rotifera 2. Snails 3. C
ID: 97799 • Letter: M
Question
Match each animal with the body part(s) it possesses. 1. Rotifera 2. Snails 3. Clams 4. Trematoda 5. Spiders A. suckers, anchors, or hooks B. chelicerae C. ciliated corona D. mantle and radula E. inhalant and exhalant siphons Match each term with its accurate description. 6. spicules 7. spiracles 8. pseudocoelomate 9. acoelomate 10. coelomate A. no body cavity B. body cavity within mesoderm C. body cavity between mesoderm and endoderm D. needles of calcium carbonate on sponges E. connect tracheae to the exterior in terrestrial Multiple Choice Which of the following is a characteristic that is NOT shared by shrimp, and barnacles? A. They are all gonochoric. B. They all have three tagmata. C. They are all aquatic. D. They all have an exoskeleton. What structure in mollusks secretes their shell? A. Ctenidia B. Foot C. Mantle D. Radula How is gas exchange accomplished in flatworms? A. Spiracles B. Spicules C. Tracheae D. DiffusionExplanation / Answer
1.....C (Rotifers are classifed as cilated corona)
2.....D (In Snails mantles and radula )
3.....E( Clams with inhalant and exhalant siphons)
4......A (Trematoda are parasites so suckers, hooks)
5.....B (in spiders Chelicerae)
6.......D (A small needlelike structure or part, such as one of the silicate or calcium carbonate)
7......E (Insects and some more derived spiders have spiracles on their exoskeletons to allow air to enter the trachea.)
8.......C( pseudocoelomate any of a group of invertebrates with a three-layered body that has a fluid-filled body cavity (pseudocoelom) between the endoderm and the mesoderm (the innermost and middle tissue layers).
9......A
10.....B.
12) C (molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell. In sea slugs there is a progressive loss of the shell and the mantle becomes the dorsal surface of the animal)
13) D (Gas exchange by direct diffusion across surface membranes is efficient for organisms less than 1 mm in diameter.)