Which one of the following is responsible for supplying nourishment to the developing embryo ? Answer giving reasons.

Which of the following is responsible for nourishing the developing sperm?

Which cells supply nourishment to developing sperms ?

Which one of the following gives nourishment to spermatozoans?

Which cells provide nourishment to developing sperms ?

Which one of the following hormones is responsible for the development of female sexual characters?

In Vivipary, how the developing embryoes are nourished?

Name the layer which supplies nourishment is the developing pollen grains. OR Name teh layer which supplies nourishment to the developing pollen grains.