Class 12 Biology - Chapter Strategies for Enhancement in Food Production NCERT Solutions | What is meant by the term breed? What ar
What is meant by the term breed? What are the objectives of animal breeding?
A breed is a special variety of animals within a species. It is similar in most characters such as general appearance, size, configuration, and features with other members of the same species. Jersey and Brown Swiss are examples of foreign breeds of cattle. These two varieties of cattle have the ability to produce abundant quantities of milk. This milk is very nutritious with high protein content.
Objectives of animal breeding:
(i) To increase the yield of animals.
(ii) To improve the desirable qualities of the animal produce.
(iii) To produce disease-resistant varieties of animals.
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:- Which part of the plant is best suited for making virus-free plants and why?
- 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).
Recently Viewed Questions of Class 12 Biology
- Q:- What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi?
- Q:- Amniocentesis for sex determination is banned in our country. Is this ban necessary? Comment.
- Q:- Column A Column B
(a) Catalytic converter (i) Particulate matter
(b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides
(c) Earmuffs (iii) High noise level
(d) Landfills (iv) Solid wastes - Q:- Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
- Q:- What measures, as an individual, you would take to reduce environmental pollution?
- Q:- How is a cancerous cell different from a normal cell?
- Q:- What is vegetative propagation? Give two suitable examples.
- Q:- Do you think microbes can also be used as source of energy? If yes, how?
- Q:- Do you think that friends can influence one to take alcohol/drugs? If yes, how may one protect himself/herself from such an influence?
- Q:- Differentiate between a zoospore and a zygote.
1 Comment(s) on this Question
VEERY. GOOD. ANSWER ME AADD GIVING ME BRIEFly. TQ. FOR. OBTAINING THIS. HELP
- All Chapters Of Class 12 Biology
- All Subjects Of Class 12