Assertion : Presence of zona pallucida over the fertilized ovum prevents ectopic pregnancy .
Reason : Zona pellucida helps the ovum to penetrate endometrium .

How does zona pellucida of ovum help in preventing polyspermy?

How does zona pellucida of ovum help in preventing polyspermy?

How does zona pellucida of ovum help in preventing polyspermy?

How does zona pellucida of ovum help in preventing polyspermy?

How does zona pellucida of ovum help in preventing polyspermy?

How does zona pelucida of ovum help in preventing polyspermy?

Acellular layer made up of glycoproteins within Graafian follicle around ovum prevents ectopic pregnancy is

A cellular layer made up of glycoproteins within Graafian follicle around ovum prevents ectopic pregnancy is

Read the following text and answer the following questions on the basis of the same: During sexual reproduction, the male inserts the sperm into the female reproductive tract, and sperm receive by the ovary and after that sperm fuse with the egg (ovum) in the ampullary region, this process is called fertilization, haploid nucleus of sperm fuse with that of ovum to form Diploid zygote. Assertion (A): All copulations do not lead to the fertilisation and pregnancy. Reason (R): Fertilisation can occur only if the ovum and sperms are transported simultaneously to the ampulllary-isthmic junction.