Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions for Biology

During microsporogenesis, meiosis occurs in ______.

How many autosomes does a human primary spermatocyte have?

How many sperms are formed from a secondary spermatocyte?

Middle piece of mammalian sperm possesses ______.

Extrusion of second polar body from egg nucleus occurs ______.

Acrosome reaction in sperm is triggered by ______.

After ovulation, Graafian follicle regresses into ______.

Sertoli cells are found in ______.

Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?

By which process sperms released from the seminiferous tubules?

Which of the following contains a fluid filled cavity called antrum?

The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.

Choose the correct one with reference to the above.

There is no cell division involved in ______.

It The cell division in secondary oocyte is suspended at ______.

Connective tissue around seminiferous tubules possess endocrine cells called ______.

Corona radia is made up of ______.

Which among the following has 23 chromosomes?

The cell which undergoes meiosis I during spermatogenesis is the ______.

Identify the wrong statement from the following.

Spermiation is the process of the release of sperm from ______.