Question 11
Find out what the various components of the medium used for propagation of explants in vitro are?
Answer
The major components of medium used for propagation of explants in vitro are carbon sources such as sucrose, inorganic salts, vitamins, amino acids, water, agar-agar, and certain growth hormones such as auxins and gibberellins.
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:- 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 12 Biology
- Q:- If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why?
- Q:- What is the ecological principle behind the biological control method of managing with pest insects?
- Q:- Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?
- Q:- How is biodiversity important for ecosystem functioning?
- Q:- The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
- Q:- Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
- Q:- List any three important characteristics of a population and explain
- Q:- Name the three important components of biodiversity.
- Q:- What would be the molar concentration of human DNA in a human cell? Consult your teacher.
- Q:-
What is meant by monosporic development of female gametophyte?
- NCERT Chapter