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Question

The testes in Pheretima mature earlier than the ovaries. Hence they are


Your Answer
A
hermaphrodites
Correct Answer
B
protandrous
Your Answer
C
bisexual
Your Answer
D
monoecious 

Solution

The correct option is C protandrous
Earthworms are bisexual or monoecious or hermaphrodites i.e both male and female reproductive organs are present in the same individual. 
The testes mature earlier than the ovaries to prevent self-fertilisation. This condition is known as protandry and the organism is said to be protandrous.

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