What is aquaculture? Give example of an animal that can be multiplied by aquaculture.
The rearing of aquatic animals or the cultivation of aquatic plants for food is called aquaculture. Fishes, shell-fish and crustaceans (prawns, crabs, etc.) are the animals that can be multiplied by aquaculture.
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.
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
You are planning to set up a Dairy Farm. Describe the various aspects you would consider before you start the venture.
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.
Plants raised through tissue cultures are clones of the parent' plant. Discuss the utility of these plants.
(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.
The culture medium (nutrient medium) can be referred to as a highly enriched laboratory soil'. Justify the statement.
Discuss the importance of testing of new plant varieties in a geographically vast country like India.
What are three options to increase food production? Discuss each giving the salient features, merits and demerits.
Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.
What are the physical barriers of a cell in-the protoplast fusion experiment? How are the barriers overcome?
You are a Botanist working in the area of plant breeding. Describe the various steps that you will undertake to release a new variety.
Does apiculture offer multiple advantages to farmers? List its advantages if it is located near a place of commercial flower Cultivation.
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.
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.
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?
Is there any relationship between dedifferentiation and the higher degree of success achieved in plant tissue culture experiments?
What is the difference between n breed and a species? Give an example for each category.