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

Spermatids are transformed into sperm by a process called ______.

In humans, male germs cells differentiate into ______ at the end of first meiotic division.

The vas deferens receives duct from the seminal vesicle and opens into urethra as ______.

Urethral meatus refers to the ______.

Occurrence of Leydig’s cells and their secretion is ______.

Location and secretion of Leydig’s cells are ______.

Male hormone is produced in the testis by cells of ______.

Sertoli cells are regulated by the pituitary hormone known as ______.

The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is ______.

Seminal plasma in humans is rich in ______.

Seminal plasma in human males is rich in ______.

Secretions from which one of the following are rich in fructose, calcium, and some enzymes?

Increased secretion of which hormone start the process of sperm formation at the time of puberty?

Which of the following hormone maintains the function of male sex accessory gland and ducts?

Semen is a constituent of seminal plasma with ______.

Ejaculation of human male contains about 200 - 300 million sperms, of which for normal fertility ______% sperms must have normal shape and size and at least ______% must show energetic motility.

Which one of the following is not a male accessory gland?

Match between the following representing parts of the sperm and their functions and choose the correct option.

Seminal plasma, the fluid part of semen is formed by ______.

Spot the odd one out from the following structures with reference to the male reproductive system.