Question

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14. After copulation in earthworms, sperm which has been passed from one individual to another, is stored in special receptables called a) seminal vesicles. b) sperm ducts. c) cylinders (mucous structures secreted by the clitellum). d) spermathecae. 15. Internal and external fertilisation both a) occur only in aquatic invertebrates. b) occur only among invertebrates. c) require sex specific copulatory organs. d) produce single-celled zygotes. 16. In terms of food capture, which sponge cell is most similar to the cnidocyte of a cnidarian? a) Amoebocyte b) Choanocyte c) Epidermal cell d) Pore cell 17. A brachiopod can be distinguished from a bivalve by the presence of a) two hinged shells. b) a digestive system with separate mouth and anus c) a lophophore. d) suspension feeding. 18. Which of the following is an osmoconformer? a) Freshwater fish b) Sea anemone c) Marine bony fish d) An anadromous fish 19. Reptiles excrete uric acid because a) it is more toxic than ammonia. b) it has a low energetic cost. c) their eggs are not permeable to liquid d) they live on land. 20. The osmoregulatory excretory system of a freshwater flatworm is based on the operation of a) protonephridia b) metanephridia c) Malpighian tubules. d) nephrons. 21. Hormones act in a tissue specific manner because a) endocrine glands affect only nearby tissues b) hormones are carried in the blood only to specific tissues c) different issues differ in hormone receptors and intracellular effector proteins d) hormones are transported in axons only to specific tissues PTO

Answer 1

te LM-Cd) Spermathecae 6. (d) produce single celled zygotes 6 (6) Choanocyte © (C) a Iophophore 0 (6) Sea anemone 1 (d) they live on land le cas protonephridia 2 (c) different tissues differ in hormone proteins. anemone I receptors and intracellular effector Silanned with CamScanner