zoology QUESTION 41 Brittle stars differ from sea stars by O a ambulacral groove

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zoology

QUESTION 41 Brittle stars differ from sea stars by O a ambulacral grooves are covered by ossicles and dermal tissue o b. lacking pedicellariae O c madreporite being on the oral surface d All of the Above are correct D e. None of the choices are correct distinctions between Britle Stars and Sea Stars. QUESTION 42 Match the group to its form of respiration Trilobita and Chelicerata A Diffusion in smaller forms and internal gills in larger forms B onen Book lungs or also Trachea Crustacea Insecta C. Only Trachea with externally opening spiracles QUESTION 43 Members of Phylum Mollusca are within which Subkingdom? a Metazoa di b Eucoelomate c Protozoa d pseudocoelomate à e Animalia f Eukaryia QUESTION 44 Match the term with its best description 7 chromatophores A Eght producing cells B. light sensing cells that make up oceli C stinging cells D pigment cells E mimor cells iridocytes photophores

Explanation / Answer

41. Option e is correct.

Main differences between brittle stars and sea stars are -

1. Sea stars can regenarate rays can and brittle stars can not.

2. Brittle stars shed arms if disturbed and seas stars can not.

3. Brittle stars usually filter feed by lifting their arms and waver them in the mouth which sea stars.

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