$A$ : If both the ovaries are removed after the first trimester of pregnancy, still there would be normal growth of foetus.
$R$ : After first trimester placenta secretes sufficient progesterone
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 these is used to control human population?
Implantation or uterine attachment of the blastocyst presumably occurs between
Which of the following cells secrete testicular hormones called androgens and form endocrine part of the testis?
In determinate cleavage, the spindle is
In early haemopoietic tissue of embryo, there is