Q2
1 markVery Short AnswerSection A

List two functions performed by the testis in human beings.

How do Organisms Reproduce?
Sexual Reproduction in Human Beings
Official Answer

The two primary functions performed by the testes in human beings are:

  1. Production of male gametes (sperms): The testes produce millions of male germ-cells called sperms.
  2. Secretion of testosterone: The testes secrete the male sex hormone, testosterone, which regulates the production of sperms and brings about secondary sexual characteristics in boys during puberty.
spermstestosteronemale gameteshormonepuberty

Marking Scheme

  • 10.5 marks for stating the production of sperms/male gametes.
  • 20.5 marks for stating the secretion of testosterone/male sex hormone.

Hint

Think about the male gametes produced by the male reproductive system and the hormone responsible for changes during puberty in boys.

Quick Oral Answer

The two main functions of the testes are the production of male gametes (sperms) and the secretion of the male sex hormone, testosterone.

Analysis & Explanation

The testes are the primary male reproductive organs in humans. They perform both an exocrine function (producing sperms) and an endocrine function (secreting testosterone). Testosterone is crucial for the development of male reproductive tissues and secondary sexual characteristics such as facial hair, deep voice, and muscle growth.

Common Mistakes

  1. 1Confusing the function of the testes with other glands like the prostate gland or seminal vesicles.
  2. 2Spelling 'testosterone' incorrectly.

Interesting Facts

The testes are located outside the abdominal cavity in the scrotum because sperm formation requires a temperature lower than the normal body temperature.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2015?

This question carries 1 mark in the CBSE Class 10 Science 2015 examination.

Which chapter does this question come from in Science?

This question is from the chapter "How do Organisms Reproduce?" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Sexual Reproduction in Human Beings" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2015 paper?

This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2015 paper.