What is oogenesis? Give a brief account | Class 12 Biology Chapter Human Reproduction, Human Reproduction NCERT Solutions

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Human Reproduction. This page offers a step-by-step solution to the specific question from Exercise 1, Question 12: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 12: What is oogenesis? Give a brief account of oogenesis.
Answer:

Oogenesis is the process of the formation of a mature ovum from the oogonia in females. It takes place in the ovaries. During oogenesis, a diploid oogonium or egg mother cell increases in size and gets transformed into a diploid primary oocyte. This diploid primary oocyte undergoes first meiotic division i.e., meiosis I or reductional division to form two unequal haploid cells. The smaller cell is known as the first polar body, while the larger cell is known as the secondary oocyte. This secondary oocyte undergoes second meiotic division i.e., meiosis II or equational division and gives rise to a second polar body and an ovum. Hence, in the process of oogenesis, a diploid oogonium produces a single haploid ovum while two or three polar bodies are produced.


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Human Reproduction.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Comments

  • Mansoon
  • Jul 19, 2020

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  • M J N
  • Oct 22, 2019

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  • Sep 11, 2019

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  • Feb 26, 2019

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  • Feb 23, 2019

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  • Feb 16, 2019

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  • Jan 28, 2019

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  • Jan 22, 2019

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  • Kirti
  • Jan 12, 2019

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  • JUDHISTHIRA
  • Aug 26, 2018

Excellent answer


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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 12: What is oogenesis? Give a brief account of oogenesis.....