Tag: biology

The intratesticular genital duct includes the parts like Tubuli recti, Rete testes and Ductili efferentes. 

The testes are a pair of ovoid glandular organs that are central to the function of the male reproductive system. The testes are responsible for the production of sperm cells and the male sex hormone, testosterone. The main male sex organs are the penis and the testicles, which produce semen and sperm.
Therefore, the correct answer is option D.

• Testes are the glandular glands that secrete hormone as well as produces male gametes. 
• It is located in the scrotal sac, outside the body, because the process of spermatogenesis (sperm or male gamete production) requires a lower temperature i.e., 2-3${^0}$C lower than the normal body temperature. 

The testes are a pair of ovoid glandular organs that are primary to the function of the male reproductive system. Its function is to produce sperm cells and the male sex hormone, testosterone.
So, the correct answer is option A.

In mammals, the process of spermatogenesis or the formation of sperm requires a lower temperature than the normal body temperature to produce viable sperms. Hence, the sperms are stored outside the body in a sac-like structure called scrotum.
So, if the testes do not move from abdominal cavity to the scrotal sac, the sperms will not be formed.
Thus, the correct answer is option D.

The semen, secreted by male contains 100-200 millions of sperms. The healthy sperms in the semen then go to the cervix, then pass through the uterus and then ultimately arrive at the ampulla part of the fallopian tube where they come to meet the ovum. Although so many sperms encircle the ovum, only one sperm is allowed to penetrate the ovum.
Thus, the correct answer is option A.

The testes are the male gonads in animals. The primary function of the testes is to produce sperms and to produce the testosterone hormone.
So, the correct answer is option A.

The process of spermatogenesis or the formation of sperms require a lower temperature (1-6 degree C lower) than the normal body temperature to produce viable sperms. Hence, the sperms are stored outside in a sac-like structure called scrotum.
So, the correct answer is option D.

• The testes are the male gonad in the animals, produces sperm and the testosterone hormone and so is the primary male reproductive organ. 
• Ovum is produced by the female reproductive organ, ovary, which is also responsible for the production of estrogen.