In Pheretima mouth develops from which of the following

  • A

    Mesoderm

  • B

    Ectoderm

  • C

    Blastopore

  • D

    Endoderm

Similar Questions

$A$ : 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