What is oogenesis? Give a brief account | Class 12 Biology Chapter Human Reproduction, Human Reproduction NCERT Solutions

Question: Why are living organisms classified?

Answer:

A large variety of plants, animals, and microbes found on earth and they differ in size, shape, colour, habitat, and many other characteristics. So, studying each of them is impossible. Therefore, scientists have devised mechanisms to classify all living organisms on certain rules and principles that allow identification, nomenclature, and finally classification of an organism.

For example, based on presence of three pairs of legs and 2 pairs of wings, an organism is identified as an insect, it will be given a scientific name and then grouped with other similar organisms. Thus, various groups or taxon include organisms based on their similarity and differences.

Therefore, the biological classification helps in revealing the relationship between various organisms. It also helps in making study of organisms easy and organized.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

< Previous Question

Next Question >

Popular questions of class 12 Biology

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

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: 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

Q: What is DNA fingerprinting? Mention its application.

Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reasons for your answers.
a. Salvinia
b. Opuntia
c. Rhizophora
d. Mangifera

Why do high altitude areas have brighter sunlight and lower temperatures as compared to the plains?

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

How do we compute the age of a living tree?

During the course of evolution why DNA was chosen over RNA as genetic material? Give reasons by first discussing the desired criteria in a molecule that can act as genetic material and in the light of biochemical differences between DNA and RNA.

Define the terms (i) Bioprospecting (ii) Endemism

Name an industry which can cause both air and thermal pollution and as well as eutrophication.

Give one example for each of the following:
i. Eurythermal plant species _______________
ii. A hot water spring organism _______________
iii. An organism seen in deep ocean trenches _______________
iv. An organism seen in compost pit _______________
v. A parasitic angiosperm _______________
vi. A stenothermal plant species _______________
vii. Soil organism _______________
viii. A benthic animal _______________
ix. Antifreeze compound seen in antarctic fish _______________
x. An organism which can conform _______________

Species diversity decreases as we move away from the equator towards the poles. What could be the possible reasons?

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.

Comments

Mansoon
2020-07-19 09:58:19

Thanks for helping me

M J N
2019-10-22 10:56:31

Very very nice answer

Priya
2019-09-11 18:29:08

Thanks ð

lllll
2019-02-26 19:41:13

Atul Pandey pandya
2019-02-23 19:06:57

Nice answer guru jii Atul pandya

Zephaniah dominic
2019-02-16 05:24:52

Excellent answer....thank you very much.....

shanu kumar
2019-01-28 21:52:35

many many thanks mast answer hai

Vishal kumar
2019-01-22 15:35:38

Best answer

Kirti
2019-01-12 15:27:24

Very nice answer

JUDHISTHIRA
2018-08-26 19:11:19

Excellent answer

Comment(s) on this Question

Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 12: What is oogenesis? Give a brief account of oogenesis.....

What is oogenesis? Give a brief account | Class 12 Biology Chapter Human Reproduction, Human Reproduction NCERT Solutions

< Previous Question

Next Question >

Popular questions of class 12 Biology

Recently Viewed Questions of Class 12 Biology

Study Tips for Answering NCERT Questions:

Comments

Comment(s) on this Question

Chapters for Class 12 Biology

Subjects for Class 12

Students Also Read

Important links

Quick Links

Resources

Support