Class 11 NEET Biology Animal Kingdom Questions Part 2

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Question : 61 of 104

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Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

(2010)

Penguin is homoiothermic while the remaining three are poikilothermic.
Leech is a fresh water form while all others are marine.
Spongilla has special collared cells called choanocytes, not found in the remaining three.
All are bilaterally symmetrical.

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