The male sex hormone secreted by testes is ______________.

Which one of the following have a good power of regeneration?

Which one is a monocot seed?

Binary Fission takes place in ___________________.

The food is stored in _______________.

The seed of Castor is ______________.

Why do seeds require oxygen during germination?

_______________ is the opening through which the pollen tube enters the ovule.

The type of asexual reproduction which takes place in Spirogyra is ____________.

External fertilization is seen in ________________.