Master Reproduction In Animals Class 8 NCERT Solutions With Vedantu's Expert Guidance
NCERT Solutions for Class 8 Science Chapter 6 delves into the fascinating world of how animals reproduce. From tiny insects to large mammals, reproduction is essential for species' survival. This Chapter explores the various methods animals use to reproduce, from simple processes like budding and fission to more complex ones like sexual reproduction. Through easy-to-understand explanations and examples, Class 8 Reproduction In Animals helps students learn about the different reproductive organs and cycles in animals. Class 8 Science Chapter 6 PDF helps students thoroughly understand the main concepts presented in the curriculum.
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Download the FREE PDF of Reproduction In Animals Class 8 Questions And Answers These NCERT Solutions are prepared by the Vedantu Experts and are updated according to the Class 8 Science syllabus. Start with Vedantu to pursue a path of academic excellence!
Quick Insights for NCERT Class 8 Science Reproduction in Animals Question Answer
Class 8 Science Reproduction In Animals covers various reproductive methods observed in the animal kingdom, including asexual and sexual reproduction.
Class 8 Science Chapter 6 Question Answer helps students learn about the structural adaptations of different animals for reproduction, such as the reproductive organs and their functions.
Through examples and diagrams, learners gain insights into the lifecycle of various animals.
Reproduction In Animals Class 8 PDF delves into the process of sexual reproduction, explaining the roles of male and female reproductive organs and fertilisation.
The concepts covered in this chapter are crucial for academic learning and offer insights into real-world phenomena and the diversity of life on Earth.
By engaging with NCERT Solutions for Reproduction In Animals Class 8, students can develop a deeper appreciation for the mechanisms through which life is sustained and propagated in the animal world.
1. Explain the importance of reproduction in organisms.
Ans: Importance of reproduction:
Human reproduction is essential for the continuance of the human species.
It is the process of producing new individuals from the living organisms.
Reproduction ensures the passage of traits and habitats from generation to generation.
Without reproduction the species will be vanished from the earth and there is no world without species.
2. Describe the process of fertilization in human beings.
Ans: Process of fertilization in human beings:
Human reproduction is brought about by formation and fusion of the male and female gametes. The male gametes, i.e. the sperms are produced by the testis and the female gametes, i.e. the ovum is produced by the ovary.
During copulation, the male releases sperm into the female reproductive tract. Since the sperm is a motile gamete, it will swim up the female reproductive tract to reach the ovum in the fallopian tube.
The process of fertilization happens when the male and female gametes fuse together in the fallopian tube. The end product of fertilization is called a zygote, which will develop further and become a foetus in the womb.
3. Choose the most appropriate answer.
a. Internal fertilisation occurs
In the female body.
Outside female body.
In male body.
Outside male body
Ans:
I. In a female body
Internal fertilization takes place inside the female body and external fertilization takes place outside the female body.
b. A tadpole develops into an adult frog by the process of
Fertilisation.
Metamorphosis
Embedding
Budding
Ans: (II) Metamorphosis
Fertilization takes place in human beings by the fusion of gametes and budding is a type of asexual reproduction takes place in parents in forming the buds.
c. The number of nuclei present in a zygote is
None
One
Two
Four
Ans: (II) one
Only one nuclei is present in a zygote.
4. Indicate whether the following statements are true (T) or false (F).
Oviparous animals give birth to young one.
Ans: F
Oviparous animals lay eggs and the young ones develop inside it.
Each sperm is a single cell.
Ans: T
External fertilisation takes place in frogs.
Ans: T
A new human individual develops from a cell called gamete.
Ans: T
Egg laid after fertilisation is made up of a single cell.
Ans: T
Amoeba reproduces by budding.
Ans: F
Amoeba reproduces asexually through binary fission.
Fertilisation is necessary even in asexual reproduction.
Ans: T
Binary fission is a method of asexual reproduction.
Ans: T
A zygote is formed as a result of fertilisation.
Ans: T
An embryo is made up of a single cell.
Ans: F
Embryo is a multicellular structure.
4. Give two differences between a zygote and Foetus.
Ans: Difference between zygote and foetus:
5. Define asexual reproduction. Describe two methods of asexual reproduction in animals.
Ans: Asexual Reproduction:
It is a mode of reproduction that does not entails the union of sex cells or gametes.
There are different types of asexual reproduction, they are binary fission, budding vegetative propagation, spore formation, fragmentation. There is no gamete formation in this type of reproduction. Animals like Hydra, Amoeba undergo asexual mode of reproduction.
Two types of Asexual reproduction are:
Budding: It is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. These buds develop into tiny individuals and when fully they mature and detach from the parets body and become a new independent individual. Example: Hydra.
Binary Fission: In this type of asexual reproduction the body of the organism mainly unicellular organism divides into two. Each of the two daughter cells are alike. Example: Amoeba.
6. In which female reproductive organ does the embryo get embedded?
Ans: The embryo gets embedded in the wall of the uterus for further development.
7. What is metamorphosis? Give examples.
Ans: Metamorphosis:
It means sudden change which happens while developing.
The animals that undergoes metamorphosis are
Butterfly (egg🡪larva🡪pupa🡪adult)
Frog (egg🡪tadpole🡪adult)
8. Difference between internal fertilisation and external fertilisation.
Ans: Difference between internal fertilization and external fertilization:
9. Complete the crossword puzzle using the hints given below. Across
1. The process of the fusion of the zygotes.
6. The type of fertilisation in hen.
7. Term used for bulges observed on the sides of the body of hydra.
8. Eggs are produced here.
Down
2. Sperms are produced in these male reproductive organs.
3. Another term for the fertilized egg.
4. These animals lay eggs.
5. A type of fission in amoeba.
Ans:
1. The process of the fusion of the zygotes - FERTILIZATION
6. The type of fertilisation in hen - INTERNAL
7. Term used for bulges observed on the sides of the body of hydra - BUDS
8. Eggs are produced here - OVARY
Down
2. Sperms are produced in these male reproductive organs - TESTES
3. Another term for the fertilized egg - ZYGOTE
4. These animals lay eggs - OVIPAROUS
5. A type of fission in amoeba – BINARY
NCERT Class 8 Reproduction in Animals- Quick Overview of Detailed Structure of Topics
Important Points from Class 8 Science Chapter 6 PDF
Types of Reproduction:
Asexual Reproduction: Involves one parent; offspring are genetically identical to the parent. Methods include budding, fission, regeneration, and fragmentation.
Sexual Reproduction: Involves the fusion of male and female gametes (sperm and egg) to form a zygote, leading to genetic variation.
Male Reproductive System:
Organs: Testes, vas deferens, penis.
Function: Testes produce sperm, which is transported through the vas deferens and released through the penis.
Female Reproductive System:
Organs: Ovaries, fallopian tubes, uterus, vagina.
Function: Ovaries produce eggs; fertilisation occurs in the fallopian tubes, and the fertilised egg implants in the uterus.
Fertilisation:
Process: Sperm fuses with an egg to form a zygote, usually in the female reproductive tract.
Viviparous Animals:
Give birth to live young.
Examples: Humans, dogs, whales.
Oviparous Animals:
Lay eggs that hatch into offspring.
Examples: Birds, reptiles, amphibians, and most fish.
Benefits of Referring to Vedantu’s NCERT Class 8 Science Chapter 6 Question Answer
Vedantu’s Class 8 Science Reproduction In Animals Question Answer comprehensively explains each topic in Chapter 6, ensuring a thorough understanding of animal reproduction concepts.
Reproduction In Animals Class 8 PDF follows a structured approach, breaking down complex topics like types of reproduction.
The topics like the reproductive systems of animals, fertilisation, and life cycle into small sections, making it easier for students to grasp the content.
Concepts are explained in a clear and simple language, making it accessible for students of all learning levels.
Class 8 Science Reproduction In Animals includes diagrams, illustrations, and charts to help visual learners understand complex concepts more easily.
Class 8 Reproduction In Animals Question Answer helps students learn about the structural adaptations of different animals for reproduction, such as the reproductive organs and their functions.
Vedantu offers supplementary resources such as video lectures, quizzes, and study materials to complement the chapter solutions, providing a holistic learning experience.
Conclusion
Vedantu’s NCERT Solutions for Class 8 Science Chapter 6: Reproduction in Animals is an excellent resource for understanding key concepts like modes of reproduction, fertilisation, and development of embryos. Students should focus on these areas to grasp the essentials of animal reproduction. The solutions simplify complex topics, making them easy to understand and apply. Additionally, practice is crucial as the previous year's question papers often include around 10 questions from this chapter. By studying these solutions, students can confidently prepare for exams and improve their understanding of the subject.
Important Study Materials for Class 8 Science Chapter 5
Students can access extra study materials on the Conservation of Plants and Animals. These resources are available for download and offer additional support for your studies.
NCERT Solutions for Class 8 Science-Chapter wise PDF Links
NCERT Study Resources for Science Class 8
For complete preparation of Science for CBSE Class 8 exams, check out the following links for different study materials available at Vedantu.
FAQs on NCERT Solutions For Class 8 Science Chapter 6 Reproduction In Animals
1. What is reproduction in animals and why is it important?
Reproduction in animals is the biological process by which animals produce offspring to continue their species. It ensures the survival and continuation of animal populations across generations.
Why it matters: Without reproduction, animal species would become extinct as individuals have limited lifespans.
Types: Animals reproduce through two main methods - sexual reproduction (involving two parents) and asexual reproduction (single parent). Sexual reproduction creates genetic diversity, while asexual reproduction produces identical offspring.
Check: Look for formation of new individuals with similar characteristics to parents. This fundamental life process maintains biodiversity and species survival in the natural world.
2. How do NCERT Solutions for Class 8 Science Chapter 6 help students understand reproduction concepts?
NCERT Solutions provide step-by-step explanations for all questions related to reproduction in animals, making complex biological processes easier to understand for students.
3. What are the main types of asexual reproduction found in animals?
Asexual reproduction in animals occurs through budding, binary fission, and fragmentation, where offspring develop from a single parent without gamete fusion.
4. Can students access reproduction in animals Class 8 questions and answers in PDF format?
Students can download Free PDF versions of NCERT solutions containing all exercise questions, in-text questions, and additional practice problems for offline study and revision.
5. What is fertilization and where does it occur in animals?
Fertilization is the fusion of male and female gametes (sperm and egg) to form a zygote, which develops into a new organism.
Why it matters: This process combines genetic material from both parents, creating genetic variation in offspring.
Types:
- Internal fertilization - occurs inside the female body (mammals, birds)
- External fertilization - happens outside the body in water (fish, amphibians)
- Self-fertilization - some animals can fertilize their own eggs
Check: Formation of zygote indicates successful fertilization has occurred. Fertilization marks the beginning of embryonic development in sexually reproducing animals.
6. How does budding work as a form of reproduction?
In budding, a small outgrowth develops on the parent's body, grows into a complete organism, and eventually detaches to live independently like in Hydra.
7. What development stages do animals go through after fertilization?
After fertilization, animals undergo embryonic development through distinct stages - zygote formation, cell division, tissue differentiation, and organ development.
Why it matters: These stages transform a single cell into a complete organism with all necessary body systems.
Steps: Zygote divides repeatedly through mitosis. Cells organize into layers and tissues. Organs and body systems form. Growth continues until maturity.
Tip: Development may be direct (like mammals) or indirect with metamorphosis (like butterflies).
This systematic development ensures proper formation of all body structures and functions.
8. Why do some animals lay eggs while others give birth to live young?
Animals adapt different reproductive strategies - oviparous animals lay eggs for protection and independent development, while viviparous animals give live birth for better offspring survival.
9. What reproductive advantages does sexual reproduction offer over asexual reproduction?
Sexual reproduction creates genetic diversity by combining DNA from two parents, leading to offspring with varied characteristics and better survival chances.
Why it matters: Genetic variation helps species adapt to environmental changes and resist diseases more effectively.
Advantages: Increased genetic diversity in populations. Better adaptation to changing environments. Reduced risk of genetic disorders. Enhanced disease resistance.
Check: Offspring show mixed traits from both parents rather than being identical copies.
This reproductive strategy promotes species evolution and long-term survival in diverse environments.
10. How does Vedantu's Class 8 Science Chapter 6 NCERT Solutions support exam preparation?
The solutions include detailed explanations for all exercise questions, common student mistakes to avoid, and practice questions that align with exam patterns for thorough preparation.
