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  • Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?Option: 1 All are bila

Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?

Option: 1

All are bilaterally symmetrical


Option: 2

Penguin is homoiothermic while the remaining three are poikilothermic


Option: 3

Leech is a fresh water form while all others are marine


Option: 4

Spongilla has special collared cells called choanocytes, not found in the remaining three


Answers (1)

best_answer

Leech, dolphins, and penguins are bilaterally symmetrical(upon the division of body the left and right sides are identical)but the sponge body is asymmetrical(both left and right side bodies are not identical). Dolphin is homeothermic(animals that maintain internal body temperature). Sponge lives in fresh water. Sponges have special collared cells which they use for the intake of food particles in the body. correct option is d.

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Riya

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