Animal Kingdom Question 419
Question: Earthworm possesses hearts [CBSE PMT 1991]
Options:
A) 6 pairs
B) 4 pairs
C) 2 pairs
D) 1
Show Answer
Answer:
Correct Answer: B
Solution:
In each of the segment 7, 9, 12 and 13 is found a pair of large, thick, muscular and rhythmically contractile hearts (Total 4 pairs).