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

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

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

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

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

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

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

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct ? (a) Penguin is homiothermic while the remaining three are poikilothermic (b) Leech is fresh water from while all others are marine (c) Spongilla has special collared cells called choanocytes, not found in the remaining three (d) All are bilaterlly symmetrical

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