TRUE/FALSE (1 pt each) All the animals in the clades Lophotrochozoa, Ecdysozoa,
ID: 220218 • Letter: T
Question
TRUE/FALSE (1 pt each) All the animals in the clades Lophotrochozoa, Ecdysozoa, and Deuterostomia exhibit radial symmetry during at least some part of their life cycles. 7. TRUE or FALSE: The innermost of the three primary germ layers in animal embryos, which lines the archenteron and gives rise to the liver, pancreas, lungs, and the lining of the digestive tract, is called the mesoderm. 8. TRUE or FALSE: 9. TRUE or FALSE: All mollusks have radula. Diploblastic animals can be classified based on the type of body cavity they possess. 10. TRUE or FALSE: Animals that are coelomates are ones whose body cavity is derived from a combination of the mesoderm and the endoderm. 11. TRUE or FALSE: 2
Explanation / Answer
7. False ( they exhibit bilateral synnetry)
8. False ( it is endoderm layer)
9. False ( all molusks except bivalves ( bivalvia) do not have radula).
10. False ( they are classified on the basis of embroyonic layers, animals in which cells are arranged in two embryonic layers ( ecto and endoderm).
11. False ( it is derived from mesoderm only).
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