AIPMT PRELIMS2010Zoology-Animal Kingdom
AIPMT PRELIMS 2010 Zoology Phylum Porifera MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?
A
All are bilaterally symmetrical
B
Penguin is homoiothermic while the remaining three are poikilothermic
C
Leech is a freshwater form while all others are marine
D
Spongilla has special collared cells called choanocytes, not found in the remaining three
Correct Answer
Option D
Detailed Explanation
Spongilla belongs to phylum Porifera, in which the characteristic cells are choanocytes, absent in Leech, Dolphin, and Penguin.
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