NCERT Class 8 Science Science: Chapter 6 — Reproduction in Animals
This chapter, "Reproduction in Animals," is the first in the NCERT Class 8 Science textbook. It introduces the fundamental biological process of reproduction, emphasizing its crucial role in ensuring the continuation of species. The chapter begins by prompting students to recall previous knowledge about digestion, circulation, and respiration, highlighting their importance for individual survival. It then contrasts this with reproduction, which is vital for species survival. The text explains that animals, like plants, reproduce through two primary modes: sexual and asexual reproduction. The focus then shifts to sexual reproduction, detailing the male and female reproductive organs in humans. It describes the testes producing sperms (male gametes) and ovaries producing eggs (female gametes). The chapter explains that the fusion of these gametes forms a zygote, which develops into a new individual. This foundational understanding is essential for students' grasp of biological continuity and diversity.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 8 |
| Subject | Science |
| Book | Science |
| Chapter | Chapter 6 — Reproduction in Animals |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 2 minutes |
| Word count | 332 |
Learning outcomes
- Understand the importance of reproduction for species continuation.
- Differentiate between sexual and asexual reproduction.
- Identify the male and female reproductive organs in humans.
- Explain the production of gametes (sperms and eggs).
- Describe the process of fertilization and zygote formation.
Vocabulary
| Word | Meaning |
|---|---|
| Reproduction | The process by which new individual organisms are produced. |
| Species | A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. |
| Sexual reproduction | Reproduction involving the fusion of male and female gametes. |
| Asexual reproduction | Reproduction that does not involve the fusion of gametes. |
| Gametes | Reproductive cells (sperm and egg) that fuse during sexual reproduction. |
| Sperm | The male gamete. |
| Ovary | The female reproductive organ that produces eggs. |
| Testis | The male reproductive organ that produces sperms. |
| Zygote | The cell formed by the fusion of a male gamete and a female gamete. |
| Fertilization | The fusion of male and female gametes to form a zygote. |
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Practice questions
- Why is reproduction essential for organisms? Answer: Reproduction is essential for the continuation of a species, ensuring that similar kinds of individuals are produced generation after generation.
- What are the two modes of reproduction in animals? Answer: The two modes of reproduction in animals are sexual reproduction and asexual reproduction.
- Name the male gamete and the organ that produces it. Answer: The male gamete is called a sperm, and it is produced by the testes.
- Name the female gamete and the organ that produces it. Answer: The female gamete is called an egg (or ovum), and it is produced by the ovary.
- What is formed when male and female gametes fuse? Answer: When male and female gametes fuse, a zygote is formed.
Frequently asked questions
What is the main purpose of reproduction?
The main purpose of reproduction is to ensure the continuation of a species by producing new individuals.
What are the two primary methods animals use to reproduce?
Animals reproduce through sexual reproduction and asexual reproduction.
Which part of the male reproductive system produces sperms?
The testes are the male reproductive organs that produce sperms.
What is the function of the ovary in the female reproductive system?
The ovary produces the female gametes, called eggs or ova.
What is a zygote and how is it formed?
A zygote is the initial cell formed when a sperm fuses with an egg during fertilization.
Are sperms single cells?
Yes, each sperm is a single cell with a head, middle piece, and tail.
Related resources
Important topics
Topics covered
NCERT Class 8 Science — Science — Chapter 6 — Reproduction in Animals. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.