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NCERT Solutions for Class 8 Science Chapter 6 Reproduction in Animals
Edited By Irshad Anwar | Updated on Apr 21, 2025 03:13 PM IST
According to the latest CBSE Syllabus 2025-26, this chapter has been renumbered as Chapter 6.
NCERT Solutions for Class 8 Science Chapter 6 Reproduction in Animals is a chapter that help students to gain knowledge of the crucial biological phenomenon of the reproduction of animals and how it aids survival and continuation of species. The chapter explains two types of reproduction: asexual reproduction, such as processes like binary fission, budding, and regeneration, and sexual reproduction, which is the union of a male and a female gamete. The students acquire the reproductive organs, fertilization internal and external, and embryonic development by reading brief descriptions and diagrams.
This Story also Contains
- Download PDF of NCERT Solutions for Class 8 Science Chapter 6: Reproduction in Animals
- Solved Exercise of NCERT Solutions for Class 8 Science Chapter 6 Reproduction in Animals
- Overview For Class 8th Science Chapter 6
- How to solve NCERT Chapter 6 Questions effectively?
- Major Topics in Class 8 Science Chapter 6
- Practice Questions of Chapter 6 Reproduction in Animals
- NCERT Chapter-Wise Solutions For Class 8th Science
Key terms like viviparous and oviparous animals, cloning, and life cycle are defined to impart a sense of the different types of reproduction plans of the animal kingdom. These answers are CBSE syllabus-based and provide precise solutions to textbook exercise questions to make concepts such as the fertilization process, sexual and asexual modes of reproduction, and reproductive structural adaptations clear to the students. NCERT Solutions for Class 8 can be read thoroughly by students to gain better knowledge in biology and to score good marks in exams
Download PDF of NCERT Solutions for Class 8 Science Chapter 6: Reproduction in Animals
The complete solved questions from this chapter is available in the PDF provided below for easy download and revision.
Solved Exercise of NCERT Solutions for Class 8 Science Chapter 6 Reproduction in Animals
The answers given below are designed to make learning easier and help you grasp the concepts in a simple way. Clear explanations are provided to support better understanding and exam preparation. Go through them to strengthen your revision.
Q1. Explain the importance of reproduction in organisms.
Answer:
Reproduction in organisms is important to maintain the continuity of organisms and to carry on their generation to the next generation. If reproduction does not take place, no living being will survive on the earth. Because of this process, plants, animals, humans, and even all the living organisms are still alive; if reproduction had not been there, then all the plants and animals would have become extinct.
Q2. Describe the process of fertilization in human beings.
Answer:
The process of fertilization is the meeting of an egg cell from the female and a sperm cell from the male. The fusion of a sperm and an ovum. When sperm come in contact with an egg, one of the sperm may fuse with the egg. Such fusion of the egg and the sperm is called fertilization.
Fertilization, which takes place inside the female body, is called internal fertilization.
Q3. Choose the most appropriate answer.
(a) Internal fertilisation occurs
- (i) in the female body.
- (ii) outside the female body.
- (iii) in the male body.
- (iv) outside the male body
Answer:
(i) In the female body
Q3. Choose the most appropriate answer.
(b) A tadpole develops into an adult frog by the process of
- (i) fertilisation
- (ii) metamorphosis
- (iii) embedding
- (iv) budding
Answer:
(ii) metamorphosis In the case of tadpoles, they transform into adults capable of jumping and swimming. The transformation of the larva into an adult through drastic changes is called metamorphosis
Q3. Choose the most appropriate answer
(c) The number of nuclei present in a zygote is
- (i) none
- (ii) one
- (iii) two
- (iv) four
Answer:
(ii) One
Q4. Indicate whether the following statements are True (T) or False (F).
(a) Oviparous animals give birth to young ones. ( )
Answer:
(False) Oviparous organisms lay eggs.
Q4. Indicate whether the following statements are True (T) or False (F).
(b) Each sperm is a single cell. ( )
Answer:
(True) Gametes are single-celled.
Q4. Indicate whether the following statements are True (T) or False (F)
(c) External fertilization takes place in the frog. ( )
Answer:
(True) External fertilization is common in aquatic animals.
Q4. Indicate whether the following statements are True (T) or False (F).
(d) A new human individual develops from a cell called a gamete. ( )
Answer:
( False ) Gametes fuse to form a zygote and give rise to a new human being.
Q4. Indicate whether the following statements are True (T) or False (F).
(e) An egg laid after fertilisation is made up of a single cell. ( )
Answer:
( True ) The fertilised egg is a single cell.
Q4. Indicate whether the following statements are True (T) or False (F).
(f) Amoeba reproduces by budding. ( )
Answer:
( False ) An amoeba reproduces by binary fission. (budding happens in hydra)
Q4. Indicate whether the following statements are True (T) or False (F).
(g) Fertilisation is necessary even in asexual reproduction. ( )
Answer:
( False ) In asexual reproduction, only one parent is required, so the fusion of gametes does not take place.
Q4. Indicate whether the following statements are True (T) or False (F)
(h) Binary fission is a method of asexual reproduction. ( )
Answer:
( True ) In binary fission, only a single organism is required to produce two individuals. So it is a method of asexual reproduction
Q4. Indicate whether the following statements are True (T) or False (F).
(i) A zygote is formed as a result of fertilisation. ( )
Answer:
( True ) In fertilisation, one gamete of male gamete and one female gamete fuse together to form a zygote.
Q4. Indicate whether the following statements are True (T) or False (F).
(j) An embryo is made up of a single cell. ( )
Answer:
(False) it is multicellular because it is formed from zygote after repeated division.
Q5. Give two differences between a zygote and a foetus.
Answer:
Zygote-
- The zygote formed after the fertilisation of male sperm and female ovum.
- The zygote divides repeatedly to give rise to a ball of cells. The cells then begin to form groups that develop into different tissues and organs of the body. This developing structure is termed an embryo.
Foetus-
- The stage of the embryo in which all the body parts can be identified is called a foetus.
- The embryo gradually develops into a foetus.
Q6. Define asexual reproduction. Describe two methods of asexual reproduction in animals.
Answer:
In this type of reproduction, there is no need for the fusion of male and female gametes. It is a mode of reproduction in which only a single parent is involved is called asexual reproduction
Two methods of asexual reproduction in animals-
(i) Binary fission - In this type of asexual reproduction, a single cell organism is divided into two halves. Amoeba can reproduce by this method. It begins the process of reproduction by the division of its nucleus into two nuclei. This is followed by the division of its body into two, each part receiving a nucleus. Finally, two amoebae are produced from one parent amoeba
(ii) Budding - In this method developing of new individuals is by the bulges and they are called buds formed on the parent body.
This type of asexual reproduction is common in Hydra. In hydra, the new individuals develop as outgrowths (called buds) from a single parent. While being attached to the parent, develop into smaller individuals ,and when they matured, they detach from the parent and become individual ones.
Q7. In which female reproductive organ does the embryo get embedded?
Answer:
The embryo gets embedded in the wall of the uterus for further development. The embryo continues to develop in the uterus. It gradually develops bodyparts such as hands, legs, head, eyes, ears, etc. The stage of the embryo in which all the body parts can be identified is called a foetus.
Q8. What is metamorphosis? Give examples.
Answer:
Metamorphosis - The biological transformation of the larva into an adult through drastic changes is called metamorphosis.
Example- life cycle of a toad.
Q9. Differentiate between internal fertilization and external fertilization.
Answer:
Internal fertilization-
- Fertilization, which takes place inside the female body, is called internal fertilization
- survival chances of the offspring are more
- animal,s including humans, cows, dogs and hens
External fertilization-
- Fertilization in which the fusion of a male and a female gamete takes place outside the body of the female is called external fertilization.
- The chances of survival of offspring are less
- It is very common in aquatic animals such as fish, starfish, etc.
Q10. Complete the crossword puzzle using the hints given below.
Across
1. The process of the fusion of the gametes.
6. The type of fertilisation in hens.
7. The term used for bulges observed on the sides of the body of the hydra.
8. Eggs are produced here.
Down
2. Sperms are produced in these male reproductive organs.
3. Another term for in vitro fertilisation.
4. These animals lay eggs.
5. A type of fission in amoeba.
Answer:
- FERTILIZATION
- TESTIS
- ZYGOTE
- OVIPAROUS
- BINARY
- INTERNAL
- BUDS
- OVARY
Also, check NCERT Books and NCERT Syllabus here:
Overview For Class 8th Science Chapter 6
This chapter, Reproduction in Animals, describes several modes of reproduction among animals to enable them to live and reproduce as a species. It also includes the sexual reproduction, where the gametes of the male and female combine, and asexual reproduction, where young ones develop from a single parent. The chapter describes big processes such as internal and external fertilization, developmental phases, and types of reproduction such as viviparity and oviparity. In addition, it discloses improvements animals have developed to successfully reproduce across different habitats.
NCERT Solutions For Class 8th: Subject-Wise
How to solve NCERT Chapter 6 Questions effectively?
To get the best results while studying this chapter, it’s important to follow a simple and smart approach that helps in better understanding of concepts.
Firstly, its necessary to read the chapter carefully and understand the basic terms like reproduction, oviparous, viviparous, fertilization, etc.
Students should focus on diagrams and learn the diagrams like the human reproductive system, as they are frequently asked in exams.
Make short notes of definitions and processes that help to revise in less time and easily.
Practicing all NCERT questions without looking at the answers first, allow students to self-analyze them.
Go over the main concepts and questions multiple times to remember them better and revise the concepts regularly.
Major Topics in Class 8 Science Chapter 6
Given below are some of the important Topics from Chapter Reproduction in Animals to get an outline of the complete chapter:
| Types of Reproduction |
| Reproductive System Anatomy |
| Reproductive Cycles |
| Gestation and Incubation |
| Puberty and Sexual Maturity |
| Breeding Patterns |
| Reproductive Behavior |
Practice Questions of Chapter 6 Reproduction in Animals
Try these questions to check how well you’ve understood the concepts and to strengthen your grasp on important topics from the chapter.
Question 1:
Human male reproductive system consists of:
A) Penis
B) Ovary
C) Oviduct
D) The uterus
Answer:
The correct option is(a), Penis
Question 2:
Name any three parts of the female reproductive system?
Answer:
Ovary, oviduct, uterus are the three parts of the female reproductive system.
Question 3:
Define fertilization? State the two types of fertilization.
Answer:
In sexual reproduction, the two sexes, that is male and female, produce special types of reproductive cells — sperms in the male and eggs in the female. To produce a new individual, the sperm has to reach the ovum of the opposite sex and fuse with it. This process is called fertilization.
The process of fertilization is of two types: first, internal fertilization and second, external fertilization.
Question 4:
Differentiate between oviparous and viviparous animals.
Answer:
| Oviparous Animals | Viviparous Animals |
| These animals lay eggs outside the body. | These animals give birth to live young ones. |
| Embryo develops outside the mother's body. | Embryo develops inside the mother's body. |
| They require less parental care after birth. | These young ones needs more parental care after birth. |
| Examples- Birds, Reptiles. | Examples: Humans, Cats, dogs. |
Question 5:
Explain the development of embryo in human beings?
Answer:
In human beings, the growth process means any type of irreversible increase in the size and weight of an individual which occurs during the process of development. The development process starts with a single cell fertilized egg, that is, a zygote. The zygote divides and re-divides to form a cluster of cells. This division is then followed by another process, that is, the specialization of cells. The specialization of cells leads to the formation of different parts of the body. This whole process is called differentiation. This process also gives rise to various tissues and further various organs and organ systems. A baby ultimately develops into an adult.
NCERT Chapter-Wise Solutions For Class 8th Science
The chapter-wise NCERT solutions for all the science chapters are listed here along with their links:
We hope you will ace your examination with the help of NCERT Solutions for Class 8 Science Chapter 6 Reproduction in Animals.
Frequently Asked Questions (FAQs)
1. Is Reproduction in Animals important for higher studies?
Yes, Reproduction in Animals is important for higher studies. We will study in NCERT Class 10
2. What are the topics covered in NCERT Class 8 Science Chapter 6 Reproduction in Animals?
Here are the topics covered in NCERT Class 8 Science chapter 6 Reproduction in Animals
Modes of Reproduction
Sexual Reproduction
- Male Reproductive Organs
- Female Reproductive Organs
- Fertilization
- Development of Embryo
- Viviparous and Oviparous Animals
- Young Ones to Adults
Asexual Reproduction
- Budding
- Binary Fission
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