The lateral hearts in earthworms have

Options

A. Four pairs of valves and are situated in segments 7 and 9
B. Four pairs of valves and are situated in segments 6 and 8
C. Three pairs of valves and are situated in segments 8 and 10
D. Two pairs of valves and are situated in segments 6 and 11

Answer

A

Explanation

Lateral heart enlarged with thick walled pubatile and provided with four pair of valves. They lie in the 7th and 9th segment.