In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives because several wild relatives of different cultivated species of plants seem to have certain resistant characters but their yields are very low. Hence, there is a need to introduce the resistant genes into the high-yielding cultivated varieties.
In animal husbandry, if two closely related animals are mated for a few generations, it results in loss of fertility and vigour. Why is this so?
Define the term stress' for plants. Discuss briefly the two types of stress encountered by plants.
Life style diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both of these problems together?
Discuss natural selection and artificial selection. What are the implications of the latter on the process of evolution?
It is said, that diseases are spreading faster due to globalisation and increased movement of people. Justify the statement taking the example of H5N1 virus.
(a) The shift from grain to meat diets creates more demands for cereals. Why? (b) A250 kg cow produces 200 g of protein per day but 250 g of Methylophillus methylotrophus can produce 25 tonnes of protein. Name this emerging area of research. Explain its benefits.
Name the improved characteristics of wheat that helped India to achieve green revolution.
Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.
Modem methods of breeding animals and plants can alleviate the global food shortage'. Comment on the statement and give suitable examples.
A farmer was facing the problem of low yield from his farm. He was advised to keep a beehive in the vicinity. Why? How would the beehive help in enhancing yield?
If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
Plants raised through tissue cultures are clones of the parent' plant. Discuss the utility of these plants.
A few statements are given below followed by a set of terms in a box. Pick the correct term and write it against the appropriate statement.
a. Mating of closely related individuals within the same breed
b. Mating of animals of same breed but having no common ancestors on either side for 4-6 generations
c. Mating of animals of two different species
d. Breeding of animals belonging to different breeds
(i) Cross breeding, (ii) Inter-specific hybridization,
(iii) Out breeding, (iv) Out crossing, (v) Inbreeding
Name the methods employed in animal breeding. According to you which of the methods is best? Why?
Millions of chicken were killed in West Bengal, Assam, Orissa and Maharashtra recently, What was the reason?
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
Find out the various components of the medium 12.used for propagation of an explant in vitro are ?
Is there any relationship between dedifferentiation and the higher degree of success achieved in plant tissue culture experiments?
Does apiculture offer multiple advantages to farmers? List its advantages if it is located near a place of commercial flower Cultivation.
The term desirable trait' can mean different things for different plants.. Justify the statement with suitable examples.
How can we improve the success rate of fertilisation during artificial insemination in animal husbandry programmes?
Give me a living cell of any plant and I will give you a thousand plants of the same type". Is this only a slogan or is it scientifically possible? Write your comments and justify them.
(a) The shift from grain to meat diets creates more demands for cereals. Why? (b) A250 kg cow produces 200 g of protein per day but 250 g of Methylophillus methylotrophus can produce 25 tonnes of protein. Name this emerging area of research. Explain its benefits.
(a) Mutations are beneficial for plant breeding. Taking an example, justify the statement.
(b) Discuss briefly the technology that made us self-sufficient in food production.
What are three options to increase food production? Discuss each giving the salient features, merits and demerits.
A person who is allergic to pulses was advised to take a capsule of Spirulina daily. Give the reasons for the advise.