What is meant by emasculation? When and | Class 12 Biology Chapter Sexual Reproduction in Flowering Plants, Sexual Reproduction in Flowering Plants NCERT Solutions

Question: What is meant by emasculation? When and why does a plant breeder employ this technique?

Answer:

Emasculation is the process of removing anthers from bisexual flowers without affecting the female reproductive part (pistil), which is used in various plant hybridization techniques.

Emasculation is performed by plant breeders in bisexual flowers to obtain the desired variety of a plant by crossing a particular plant with the desired pollen grain. To remove the anthers, the flowers are covered with a bag before they open. This ensures that the flower is pollinated by pollen grains obtained from desirable varieties only. Later, the mature, viable, and stored pollen grains are dusted on the bagged stigma by breeders to allow artificial pollination to take place and obtain the desired plant variety.

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 oogenesis? Give a brief account of oogenesis.

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.

Recently Viewed Questions of Class 12 Biology

Q: Explain briefly
(a) PCR
(b) Restriction enzymes and DNA
(c) Chitinase

Q: Find out through internet and popular science articles whether animals other than man have self-consciousness.

Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide explanation to your answer.

Q: Write critical notes on the following:
(a) Eutrophication
(b) Biological magnification
(c) Groundwater depletion and ways for its replenishment

Flow of energy through various trophic levels in an ecosystem is unidirectional and non-cyclic. Explain.

Q: Give three hypotheses for explaining why tropics show greatest levels of species richness.

Q: List all the wastes that you generate, at home, school or during your Trips to other places, could you very easily reduce? Which would be Difficult or rather impossible to reduce?

Q: What is primary productivity? Give brief description of factors that affect primary productivity.

Q: How is a cancerous cell different from a normal cell?

Q: Differentiate between a zoospore and a zygote.

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 Sexual Reproduction in Flowering Plants.
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

Devakanta
2019-06-12 05:16:32

Thnks a lot...

Anushka soni
2019-06-09 21:26:13

It is really helpful.

Vaishali
2019-06-07 13:40:29

NYC answer

Rimita chakraborty
2019-05-29 11:40:15

Thanks this answers is very helpful for me

teena
2019-05-22 10:05:28

Thank you so much

teena
2019-05-22 10:05:01

Thank you so much..

Shruti Kumari
2019-05-07 11:13:24

Thanks a lot

Puneet
2019-02-22 18:46:44

Its very helpful

Puneet
2019-02-22 18:46:15

Its very helpful

disha
2019-02-02 12:04:56

good one this ans....helped me a lot to understand...........tqâ¡

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 15: What is meant by emasculation? When and why does a plant breeder employ this technique?....

What is meant by emasculation? When and | Class 12 Biology Chapter Sexual Reproduction in Flowering Plants, Sexual Reproduction in Flowering Plants 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