English

What is spermatogenesis?

Advertisements
Advertisements

Question

What is spermatogenesis?

Very Short Answer
Advertisements

Solution

Spermatogenesis is the process by which male spermatogonia develop into adult male gametes called spermatozoa. It begins at puberty and usually lasts until death, with only a tiny decline in the amount of sperm produced as age increases.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Human Reproduction - EXERCISES [Page 40]

APPEARS IN

NCERT Biology [English] Class 12
Chapter 2 Human Reproduction
EXERCISES | Q 6. a. | Page 40
Nootan Biology [English] Class 12 ISC
Chapter 2 Human Reproduction
NCERT EXERCISES | Q 6. (i) | Page 116

RELATED QUESTIONS

With the help of diagrammatic representation, explain the process of gametogenesis


Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.


In meiosis, the number of chromosomes becomes ___________.


Give scientific reason.

Older women are more likely to give birth to children with some abnormalities.


If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?


Answer the following type of question Assertion (A) and Reason (R).

(A) - Head of the sperm consists of acrosome and mitochondria.

(R) - Acrosome contains spiral rows of mitochondria.


At what stage of development are the gametes formed in newborn male and female?


Expand the acronym.

hCG


During spermatogenesis, spermatogonium grows in size to become ______.


Which of the following enter the maturation phase of oogenesis?


Formation of ____________ is an indication of the termination of oogenesis.


Which of the following correctly describes the secondary oocyte?


Identify the enzyme released by the sperm which has lytic activity.


How many autosomes does a human primary spermatocyte have?


Acrosome reaction in sperm is triggered by ______.


Which of the following contains a fluid filled cavity called antrum?


Connective tissue around seminiferous tubules possess endocrine cells called ______.


Corona radia is made up of ______.


Cavity of graafian follicle is ______.


How many sperms are formed from 4 primary spermatocytes?


In spermatogenesis, reduction division of chromosome occurs during conversion of ______.


The principal tail piece of human sperm shows the microtubular arrangement of ______.


Select the correct sequence of stages of spermatogenesis in a human male ______.


What does the figure represent?


Sperms can be stored for several years in liquid nitrogen with a temperature of ______.


Fetal sex can be determined by examining cells from amniotic fluid looking for:


In human females, meiosis II is not completed until:


Germ cells present in the seminiferous tubules undergo ______


During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?


What is the difference between a primary oocyte and a secondary oocyte?


How many spermatozoa are formed from one secondary spermatocyte?


Process of maturation and development of sperms ______.


Explain Oogenesis with diagram.


The diagram given below shows the various steps in spermatogenesis.

  1. Name the parts labelled '1', '2' and '3'.
  2. Name the process by which part '3' changes to part '4'.

During oogenesis the meiotic division is arrested at ______ before fertilization.


What are the two main types of gametogenesis based on the organ in which they occur?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×