Home
NCERT Soltions
Class 12
Biology
Human Reproduction
Write two major functions each of testis and ovary.

Write two major functions each of testis | 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 4: . 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 4: Write two major functions each of testis and ovary.

Answer:

Functions of the Testis:

(a) They produce male gametes called spermatozoa by the process of spermatogenesis.

(b) The leydig cells of the seminiferous tubules secrete the male sex hormone called testosterone. Testosterone aids the development of secondary sex characteristics in males.

Functions of the ovary:

(a) They produce female gametes called ova by the process of oogenesis.

(b) The growing Graffian follicles secrete the female sex hormone called estrogen. Estrogen aids the development of secondary sex characteristics in females.

Other Questions of Chapter Human Reproduction

Q: Draw a labeled diagram of a Graafian Follicle?

What is menstrual cycle? Which hormones regulate menstrual cycle?

Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between fetus and uterus is called ____________.

Q: Draw a labeled diagram of a section through ovary.

Q: Draw a labeled diagram of sperm.

Q: What is parturition? Which hormones are involved in induction of parturition?

Q: What is oogenesis? Give a brief account of oogenesis.

Q: Name the functions of the following.
(a) Corpus luteum
(b) Endometrium
(c) Acrosome
(d) Sperm tail
(e) Fimbriae

Q: 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?

Q: Name the hormones involved in regulation of spermatogenesis.

Popular questions of class 12 Biology

Q: Why is reproduction essential for organisms? Answer

Q: Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals.

Q: With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.

Q: What is DNA fingerprinting? Mention its application.

Q: What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.

Q: With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.

Q: Explain the Law of Dominance using a monohybrid cross.

Q: What are sacred groves? What is their role in conservation?

Q: Give three hypotheses for explaining why tropics show greatest levels of species richness.

Q: Differentiate between a zoospore and a zygote.

Recently Viewed Questions of Class 12 Biology

Taking examples under each category, discuss upstream and downstream processing.

Name the first transgenic cow. Which gene was introduced in this cow?

Q: Diagrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli ?

Q: Explain what is meant by biofortification.

What is the main idea behind “Joint Forest Management Concept” introduced by the Government of India?

Q: List two essential roles of ribosome during translation.

Q: If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?

Q: Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)

Which type of food would have lactic acid bacteria. Discuss their useful application.

Give the full form of ELISA. Which disease can be detected using it? Discuss the principle underlying the test.

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

Simple and Compound Interest Formulas with Questions

Interest is one of the most significant ideas in maths and financial calculations. It is very common in banking, loan applications, investments, saving account and competitive exams. Simple Interest and Compound Interest make it easier to find out how much more is earned and/or paid on a principal during the period of time. These Interest … Read more

Spoken English Course Topics for Beginners in 2026

In 2026, students, professionals, and job seekers must have a high level of spoken English. Spoken English is a beginner level course to enhance learners’ communication skills in English, their pronunciation, vocabulary, grammar structure and confidence in speaking English fluently. Today, the emphasis of spoken English courses is placed on actual conversations, everyday speech practice … Read more

Difference Between AI and Machine Learning

Artificial Intelligence (AI) and Machine Learning (ML) are two of the most sought-after technologies in today’s digital era. Although these terms are often used together, they are not the same. Machine Learning is, in fact, a component of Artificial Intelligence that enables systems to learn and enhance on their own, without direct programming. AI is … Read more

Time, Speed and Distance Formulas

Time, Speed, and Distance are some of the most important concepts in mathematics and aptitude. These are the concepts which are used to calculate the speed of an object, time taken for an object to move and the distance traveled during the motion. Questions from this topic are frequently seen in School Tests, Competitive Tests, … Read more

View All Blog Posts

Comments

karan narayana
Jan 09, 2021

thank you

sahid aktar
Oct 10, 2019

tnk u so much

Adarsh
Aug 11, 2019

Thanks

Sidhant
Jul 26, 2018

Easy to understand....

Charu
Jul 04, 2018

Mm...it's good thxx

Abhijeet kumar
May 10, 2018

We can say as the third point they both act as protection.

Trendy
Feb 19, 2018

Plz one more point

himanshu
Aug 10, 2017

Please easy function write