Science (English Medium) Class 12 - CBSE Question Bank Solutions for Biology

How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.

Cavity of graafian follicle is ______.

Cells of corona radiata remain grouped together by ______.

At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called ______.

Gray crescent is the area ______.

A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.

Besides activating the egg another role of a sperm is to carry ______ to egg.

Preparation of sperm before penetration of ovum is ______.

The nutritive cells found in seminiferous tubules are ______.

The head of the epididymis at the head of the testis is called ______.

How many sperms are formed from 4 primary spermatocytes?

In spermatogenesis, reduction division of chromosome occurs during conversion of ______.

Which of the following groups of cells in the male gonad, represent haploid cells?

The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.

The principal tail piece of human sperm shows the microtubular arrangement of ______.

Acrosome is a type of ______.

Which of the following contains the actual genetic part of a sperm?

At what stage of life is oogenesis initiated in a human female?

1st polar body is formed at which stage of oogenesis?