English
Karnataka Board PUCPUC Science 2nd PUC Class 12

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

Advertisements
Advertisements

Question

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

Distinguish Between
Advertisements

Solution

Primary oocyte Secondary oocyte 
Primary oocyte is a diploid cell formed in foetal ovary when the gamete mother cell, oogonia is arrested at prophase-I of meiosis. Secondary oocyte is the haploid cell formed from primary oocyte that completes its first meiotic division, during puberty and produces the female gamete ova.
shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Human Reproduction - VERY SHORT ANSWER [Page 21]

APPEARS IN

NCERT Exemplar Biology Exemplar [English] Class 12
Chapter 3 Human Reproduction
VERY SHORT ANSWER | Q 11. | Page 21

RELATED QUESTIONS

The male sex hormone testosterone is secreted from ____________.


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

(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.

(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.


The part labelled as ______ contains the energy source that facilitates sperm motility.


Identify the diploid cell.


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


Which of the following correctly describes the secondary oocyte?


Identify the CORRECT sequence of events.


Sertoli cells are found in ______.


There is no cell division involved in ______.


Which among the following has 23 chromosomes?


Cavity of graafian follicle is ______.


The nutritive cells found in seminiferous tubules are ______.


1st polar body is formed at which stage of oogenesis?


Head of epididymis is called as ______.


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


In the process of fertilization, this is true:


3-celled male gamete develops in:


Growth hormone of pituitary is more effective in ______.


Given below are two statements.

  • Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
  • Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.

In light of the above statements, select the correct answer from the option given below.


Answer the following:

How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×