In Pheretima mouth develops from which of the following
Mesoderm
Ectoderm
Blastopore
Endoderm
$A$ : Lack of menstruation may be indicative of pregnancy.
$R$ : Menstruation only occurs if the released ovum is fertilised.
At which phase, both $LH$ and $FSH$ attain a peak level?
Choose the correct combination of labelling the hormonal control of female reprodcutive system
Telolecithal eggs have
Largest egg is of