Tag: biology

The male sex hormone testosterone is secreted by testes which are under the control of hypothalamus and pituitary gland.

sertoli cells or nurse cells which helps nourishing sperms and spermatogenesis.

Sertoli cells or nurse cells which are a part of seminiferous tubules helps in process of spermatogenesis or production of sperms, nutrition, and morphogenesis of sperms.

Gonads have a dual function, production of hormones and gametes. In the male, testes produce sperms and testosterone. 

Testes are the primary reproductive organs which produce sperms and hormone known as testosterone. This hormone is important for sexual development and puberty i.e., development of secondary sexual characteristics like facial hair, sexual behaviour etc.
The ovary is the female reproductive organ which produces the mature ovum which further fuses with sperm to form a zygote. 
Pancreas is a heterocrine gland which secretes insulin, glucagon and somatostatin as endocrine and pancreatic juice an exocrine gland.
Adrenal are endocrine glands, which secretes various cortisol.
Thus, the correct answer is option D.

The testes are a pair of primary male reproductive organ. The testes are responsible for the production of sperm cells and the male sex hormone, testosterone.
Thus, the correct answer is option A.

As and when the body ages, both male and female experience changes in their body gradually. These changes are not only in ageing but also in their reproductive systems. Females, start producing eggs (female gamete) once they start menstruating at the age of 12-15 and seizes to produce at the age of around 40. This phase is called menopause in females. In contrast, there is no such thing as andropause in males reported by WHO. Production of sperms may reduce or halt in a man due to the reduced secretion of testosterone or decrease in Leydig cells. But a healthy man will continue in sperm production throughout his lifetime. So, the correct answer is option D.

Important male reproductive hormones are FSH, LH, and testosterone.

Sertoli cells are supportive, nutritive cells that secrete a polypeptide hormone which is known as inhibin.