Which one of these are never present in frog's ovary?
A
Oogonia
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B
Corpus luteum
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C
Ovarian follicles
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D
Germinal epithelium
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Solution
The correct option is B Corpus luteum
The Corpus luteum, an endocrine structure, is formed in the mammalian ovary from ruptured graafian follicle after ovulation and secrete hormones necessary for developing fetus.
It is absent in frogs, as fertilization and development occur outside the female body.