Q.

Read the following statements.(a) In arthropods, the cells and tissues are directly bathed in blood (haemolymph).(b) Any plane passing through the central axis of the body divides Hydra into two identical halves.(c) The body cavity of Ascaris is not lined by mesoderm.(d) Animals that do not possess notochord are called protochordates.Choose the correct answer from the options given below.

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a

Only (a) and (b) are correct

b

Only (b) and (c) are correct

c

(a), (b) and (c) are correct

d

(a), (b), (c) and (d) are correct

answer is C.

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Detailed Solution

Animals that do not possess notochord are called non-chordates.Protochordates (urochordates and cephalochordates) possess a notochord but lack a vertebral column.
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