Class 12 Biology - Chapter Human Reproduction NCERT Solutions | What is spermatogenesis? Briefly describ
Welcome to the NCERT Solutions for Class 12th Biology - Chapter Human Reproduction. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 6: what is spermatogenesis briefly describe the proc....
Question 6
What is spermatogenesis? Briefly describe the process of spermatogenesis.
Answer
Spermatogenesis is the process of the production of sperms from the immature germ cells in males. It takes place in seminiferous tubules present inside the testes. During spermatogenesis, a diploid spermatogonium (male germ cell) increases its size to form a diploid primary spermatocyte. This diploid primary spermatocyte undergoes first meiotic division (meiosis I), which is a reductional division to form two equal haploid secondary spermatocytes. Each secondary spermatocyte then undergoes second meiotic division (meiosis II) to form two equal haploid spermatids. Hence, a diploid spermatogonium produces four haploid spermatids. These spermatids are transformed into spermatozoa (sperm) by the process called spermiogenesis.
More Questions From Class 12 Biology - Chapter Human Reproduction
- Q:- Describe the structure of a seminiferous tubule.
- Q:- What is oogenesis? Give a brief account of oogenesis.
- Q:- Identify True/False statements. Correct each false statement to make it true.
(a) Androgens are produced by Sertoli cells. (True/False)
(b) Spermatozoa get nutrition from Sertoli cells. (True/False)
(c) Leydig cells are found in ovary. (True/False)
(d) Leydig cells synthesise androgens. (True/False)
(e) Oogenesis takes place in corpus luteum. (True/False)
(f) Menstrual cycle ceases during pregnancy. (True/False)
(g) Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False) - Q:- What are the major components of seminal plasma?
- Q:- Write two major functions each of testis and ovary.
- Q:-
What is menstrual cycle? Which hormones regulate menstrual cycle?
- Q:- What are the major functions of male accessory ducts and glands?
- Q:- Name the functions of the following.
(a) Corpus luteum
(b) Endometrium
(c) Acrosome
(d) Sperm tail
(e) Fimbriae - Q:- Name the hormones involved in regulation of spermatogenesis.
- Q:- Define spermiogenesis and spermiation.
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10 Comment(s) on this Question
Abigail
2020-08-17 14:09:30
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2020-02-24 22:22:47
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2019-12-19 10:54:36
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2019-12-03 06:14:48
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2019-09-26 22:32:34
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2019-09-22 16:42:35
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2019-07-30 15:00:17
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2019-06-24 12:31:13
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Akash bagh
2019-06-09 09:44:11
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Shai
2019-04-24 21:21:55
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