$A$ : In frog gray cresent is formed during fertilization.
$R$ : It is because the black granules move towards the point of entry of the sperm in animal half
Assertion and Reason both are correct and also correct explantion.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Which of the following is not the function of Sertoli cells (sustentacular cells)?
If both ovaries are removed from a rat, then which hormone is decreased in blood
Which of these sets of cells divide slowly
Urinary bladder of the embryo is or Which is the urinary bladder of child placed in the womb
In human females at the time of birth there are two million ova: how many of them normally reach maturity in the course of normal reproductive life