Human Health and Disease — BIOLOGY STD 12 Science — Question

When mammary glands of male develop similar to that of female, then this condition is known as

Polyethylene glycol method is used for:

Colostrum, the yellowish fluid, secreted by mother during the Inittlal days of lactation is very essentlal to impart immunity to the newbom infants because it contains

In reproduction of a test tube baby

Sexually transmitted disease caused by protozoa is:

Pollen tube at the time of entering embryo sac has

Number of prothallial cells present in male gametophyte of flowering plant is.

Which of the following is the most serious threat to biodiversity?

Which one from those given below is the period.