Questions
Which of the following statement is correct regarding female reproductive system of earthworm?
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a
It consists of two large ovaries, lying laterally in the 6th – 7th abdominal segments.
b
Each ovary is formed of a group of five ovarian tubules or ovarioles, containing a chain of developing ova.
c
A pair of spermatheca is present in the 5th segment which opens into the genital chamber.
d
Ova are deposited into the cocoon at the 14th segment in the clitellar region.
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Correct option is D
Female reproductive system consists of the large ovaries, lying laterally in the 2nd - 6th abdominal segments. Each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova. A pair of spermatheca is present in the 6th segment which opens into the genital chamber. Ova are released from the ovaries through the female genital pores in the 14th segment.Talk to our academic expert!
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Choose correct set with reference to Pheretima.
| (1) | Spermathecae | 6, 7, 8, 9 segments | Store both ova and sperm till copulation |
| (2) | Clitellum | 14, 15, 16 segments | Deposits eggs, sperms and nutritive fluid into cocoon |
| (3) | Lateral hearts | 7th, 9th, 12th 13th segments | Connect dorsal and ventral blood vessel |
| (4) | Calciferous glands | 9th to 14th segments | Neutralise humic acid in food |
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