How many eggs are released by a human ov | Class 12 Biology Chapter Human Reproduction, Human Reproduction NCERT Solutions

Current NCERT chapter

Academic session 2026-27, Chapter 2 in the current curriculum.

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 20: How many eggs are released by a human ovary in a month?
How many eggs do you think would have been released if the mother gave birth to identical twins?
Would your answer change if the twins born were fraternal?. 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 20: How many eggs are released by a human ovary in a month?
How many eggs do you think would have been released if the mother gave birth to identical twins?
Would your answer change if the twins born were fraternal?
Answer:

An ovary releases an egg every month. When two babies are produced in succession, they are called twins. Generally, twins are produced from a single egg by the separation of early blastomeres resulting from the first zygotic cleavage. As a result, the young ones formed will have the same genetic make- up and are thus, called identical twins.

If the twins born are fraternal, then they would have developed from two separate eggs. This happens when two eggs (one from each ovary) are released at the same time and get fertilized by two separate sperms. Hence, the young ones developed will have separate genes and are therefore, called non-identical or fraternal twins.

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.

Latest Blog Posts

Stay updated with our latest educational content and study tips

How to Build a Career in Data Analytics Without a Computer Science Degree

All businesses are gathering information on customers, products, employees, and expenditures, and someone must make decisions based on the data. That individual is the data analyst. Unlike many career changers imagine, the job is open to a broader cross-section of the population than a typical career change. A lot of working analysts trained in commerce, … Read more

Read More

Life Insurance vs Health Insurance: Why Families May Need Both

Are often purchased, talked and planned as being a replacement for another. They aren’t. One safeguards your family’s income in your absence and the other safeguards your family’s savings in the event that someone becomes ill. An examination of what they do, what they do not do, and why they are missing it when one … Read more

Read More

Home Loan vs Savings: Compare the Costs Before Buying a Home

Pay upfront, or pay off less and over time? The truth depends on four factors most consumers will never compare at the same time: the interest rate on the house loan, the interest rate on the savings account, the rate of home price appreciation, and the cost of renting the home until you actually buy … Read more

Read More

Business After 30 or a Stable Job: Which Path Should You Choose?

Thirty is when the question starts to get raised and you’re able to do something because you know you have the experience—you know you have the responsibility. Here are some ways to consider the choice based on a realistic assessment without idealizing either aspect. Restlessness is one of those things that appears in your early … Read more

Read More
View All Blog Posts

Related Resources

Exam Information

Get detailed information about CBSE exams, patterns, and preparation tips

View Exam

Full Form

Learn about Full form significance

Explore

Calculator

Use our online calculator for quick calculations and problem solving

Use Calculator

Glossary

Browse our comprehensive glossary of important terms and definitions

View Glossary

Related Student Tools

Class-wise Resources

Explore more educational resources to enhance your learning experience

Class 12 Resources

Complete study resources for this class

Class 11 Resources

Complete study resources for this class

Class 10 Resources

Complete study resources for this class

Class 9 Resources

Complete study resources for this class

Class 8 Resources

Complete study resources for this class

Class 7 Resources

Complete study resources for this class

Class 6 Resources

Complete study resources for this class

Quick Access

NCERT Solutions Sample Papers Formulas Math Tables Calculators Study Blog

Comments

  • Supriya
  • Apr 10, 2019

Nice answer for exam preparation

  • Aynal Hoque
  • Oct 23, 2018

Mozzza...

Add Comment

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 20: How many eggs are released by a human ovary in a month? How many eggs do you think would have been r....

Students Also Read

Ask a Question
Keep learning

Discover More on SaralStudy

Explore all articles