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Why are offspring of oviparous animals at a greater risk as compared t...

Why are offspring of oviparous animals a | Class 12 Biology Chapter Reproduction in Organisms, Reproduction in Organisms NCERT Solutions

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Reproduction in Organisms. This page offers a step-by-step solution to the specific question from Exercise 1, Question 18: . 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 18: Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?

Answer:

Oviparous animals lay eggs outside their body. As a result, the eggs of these animals are under continuous threat from various environmental factors. On the other hand, in viviparous animals, the development of the egg takes place inside the body of the female. Hence, the offspring of an egg-laying or oviparous animal is at greater risk as compared to the offspring of a viviparous animal, which gives birth to its young ones.

Other Questions of Chapter Reproduction in Organisms

Q: Differentiate between a zoospore and a zygote.

Q: Describe the post-fertilization changes in a flower.

Q: Explain why meiosis and gametogenesis are always interlinked?

Q: Which is a better mode of reproduction sexual or asexual? Why?

Q: Differentiate between gametogenesis from embryogenesis.

Q: Why is reproduction essential for organisms? Answer

Q: Examine a few flowers of any cucurbit plant and try to identify the staminate and pistillate flowers. Do you know any other plant that bears unisexual flowers?

Q: Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

Q: Distinguish between asexual and sexual reproduction. Why is vegetative reproduction also considered as a type of asexual reproduction?

Q: How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?

Popular questions of class 12 Biology

Q: What is spermatogenesis? Briefly describe the process of spermatogenesis.

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 oogenesis? Give a brief account of oogenesis.

Q: Describe the structure of a seminiferous tubule.

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?

Recently Viewed Questions of Class 12 Biology

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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 Reproduction in Organisms.
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.

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Comments

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Apr 20, 2020

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Jul 19, 2019

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Jul 07, 2019

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Topper
May 10, 2019

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Mar 29, 2019

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