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Get Answers to all your Questions
Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?
Option: 1
Penguin is homeothermic while the remaining three are poikilothermic
Option: 2
Leech is a fresh water form while all others are marine
Option: 3
Spongilla has special collared cells called choanocytes, not found in the remaining three
Option: 4
All are bilaterally symmetrical
