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?
Bees are the pollinators of many of our crop species such as sunflower, Brassica, apple and pear. Keeping beehives in crop fields during flowering period increases pollination efficiency and improves the yield beneficial both from the point of view of crop yield and honey yield.
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.
Name the improved characteristics of wheat that helped India to achieve green revolution.
(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.
Modem methods of breeding animals and plants can alleviate the global food shortage'. Comment on the statement and give suitable examples.
If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
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?
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
Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.
Plants raised through tissue cultures are clones of the parent' plant. Discuss the utility of these plants.
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.
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.
You are planning to set up a Dairy Farm. Describe the various aspects you would consider before you start the venture.
The term desirable trait' can mean different things for different plants.. Justify the statement with suitable examples.
Is there any relationship between dedifferentiation and the higher degree of success achieved in plant tissue culture experiments?
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.
Discuss the importance of testing of new plant varieties in a geographically vast country like India.
What are the advantages of tissue culture methods over conventional method of plant breeding in crop improvement programmes?
Discuss how the property of plant cell totipotency has been utilised for plant propagation and improvement
(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.
Does apiculture offer multiple advantages to farmers? List its advantages if it is located near a place of commercial flower Cultivation.
How can we improve the success rate of fertilisation during artificial insemination in animal husbandry programmes?
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.