NTA Abhyas NEET2020BotanyAnimal KingdomPractice
Which one of the following statements about all the four of Spongilla , Leech, Dolphin and Penguin is CORRECT?
Options
- APenguin is homoeothermic while the remaining three are poikilothermic.
- BLeech is a freshwater form while all others are marine.
- CSpongilla has special collared cells called choanocytes, not found in the remaining three.
- DAll of them shows bilateral symmetry.
Correct answer
C. Spongilla has special collared cells called choanocytes, not found in the remaining three.
Step-by-step solution
Penguin is a flightless bird belonging to the group of Aves and is a homeotherm. Dolphin is an aquatic mammal that gives birth to live young ones and found in both freshwater and marine water. It is also homeotherm. Leech is a segmented parasite under the phylum Annelida majorly found in the freshwater habitat. They are hermaphrodites and poikilothermic. Spongilla is a freshwater sponge found in lakes in slow streams. They remain attached to the rock and logs surface and filter water using their special cells calle