Class 12th Biology 2016 Set2 Outside Delhi Board Paper Solution
Question 15
Write the two limitations of traditional breeding technique that led to promotion of micro propagation.
Answer
Below are the two limitations of traditional breeding technique
1) Failed to keep pace with demand for crop improvement.
2) The breeder does not know exactly what genes have been introduced to the new cultivars.
Popular Questions of Class 12th 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:- 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.
Recently Viewed Questions of Class 12th biology
- Q:- How does the transmission of each of the following diseases take place?
(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia - Q:- What is the major advantage of producing plants by micropropagation?
- Q:- Which one of the following has the largest population in a food chain?
(a) Producers
(b) Primary consumers
(c) Secondary consumers
(d) Decomposers - Q:- Write important features of a sedimentary cycle in an ecosystem.
- Q:- Draw a labeled diagram of a section through ovary.
- Q:- What are transgenic bacteria? Illustrate using any one example.
- Q:- Discuss with your teacher and find out how to distinguish between
(a) Plasmid DNA and chromosomal DNA
(b) RNA and DNA
(c) Exonuclease and Endonuclease - Q:- Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?
- Q:- Which is a better mode of reproduction sexual or asexual? Why?
- Q:- What is apomixis and what is its importance?