$A$ : Lack of menstruation may be indicative of pregnancy.
$R$ : Menstruation only occurs if the released ovum is fertilised.
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.
Why the testes are situated in the scrotum, which is located outside the abdominal cavity ?
Which of the following is not correct for gastrulation
There is a connective tissue cord extending between the testis and abdominal wall called
Eggs having yolk in their centre of cytoplasm in peripheral layer are called
Read the following paragraph with two blanks : Each testis has about $A$ compartments called as testicular lobules. Each lobule contains $B$ highly coiled seminiferous tubules in which the sperms are produced. The correct option for the two blanks is
$A$ | $B$ |