Class 12 Biology - Chapter Strategies for Enhancement in Food Production NCERT Solutions | Which part of the plant is best suited f
Which part of the plant is best suited for making virus-free plants and why?
Apical and axillary meristems of plants is used for making virus-free plants. In a diseased plant, only this region is not infected by the virus as compared to the rest of the plant region. Hence, the scientists remove axillary and apical meristems of the diseased plant and grow it in vitro to obtain a disease-free and healthy plant.
Virus-free plants of banana, sugarcane, and potato have been obtained using this method by scientists.
More Questions From Class 12 Biology - Chapter Strategies for Enhancement in Food Production
- Q:- Explain what is meant by biofortification.
- Q:- Briefly describe various steps involved in plant breeding.
- Q:- Name the methods employed in animal breeding. According to you which one of the methods is best? Why?
- Q:- What is the major advantage of producing plants by micropropagation?
- Q:- Name any five hybrid varieties of crop plants which have been developed in India.
- Q:- What is apiculture? How is it important in our lives?
- Q:- Discuss the role of fishery in enhancement of food production.
- Q:- What is meant by the term breed? What are the objectives of animal breeding?
- Q:- Explain in brief the role of animal husbandry in human welfare.
- Q:- If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
Popular Questions of Class 12 Biology
- Q:- Why is reproduction essential for organisms? Answer
- Q:- Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
- Q:-
Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between fetus and uterus is called ____________. - Q:- What do you think is the significance of reproductive health in a society?
- Q:- Mention the advantages of selecting pea plant for experiment by Mendel.
- Q:- Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine. - Q:- Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.
- Q:- What are the various public health measures, which you would suggest as safeguard against infectious diseases?
- Q:- Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?
- Q:- Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).
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