Label this dingram of an annelid and identify its class (Oligochaeta Polychaeta,

Question

Label this dingram of an annelid and identify its class (Oligochaeta Polychaeta, or Hirudinea) 7. 19.2 Mollusks (Phylum Mollusca) 8. Explain what causes the growth ridges found on the shells of bivalves. 9. List some structures that distinguish bivalves from the other molluscan classes. 10. What characteristics distinguish slugs from nudibranchs? 19.3 Roundworms (Phylum Nematoda) 11. Pseudocoel means "false body cavity." Why is this term applied to the body cavity of roundworms? 19.4 Joint-Lexged Animals (Phylum Arthropoda) 12. Define sexual dimorphism, describe it in the crayfish, and list two other animals that exhibit this phenomenon 402 EXERCISE 19

Explanation / Answer

Upper part of diagram asked is sensory tentacles and other one part asked is parapodia.

Given annelid belongs to class polychaete.

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