Which part of the plant is best suited for making virus-free plants and why?
The apical or axillary meristems are best suited for making virus free plants because they are generally free from virus.
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.
Discuss natural selection and artificial selection. What are the implications of the latter on the process of evolution?
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?
Plants raised through tissue cultures are clones of the parent' plant. Discuss the utility of these plants.
You are planning to set up a Dairy Farm. Describe the various aspects you would consider before you start the venture.
Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.
Would it be wrong to call plants obtained through micropropagation as clones'? Comment.
What are the advantages of tissue culture methods over conventional method of plant breeding in crop improvement programmes?
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.
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.
Modem methods of breeding animals and plants can alleviate the global food shortage'. Comment on the statement and give suitable examples.
Does apiculture offer multiple advantages to farmers? List its advantages if it is located near a place of commercial flower Cultivation.
Discuss how the property of plant cell totipotency has been utilised for plant propagation and improvement
Name the methods employed in animal breeding. According to you which of the methods is best? Why?
The term desirable trait' can mean different things for different plants.. Justify the statement with suitable examples.
What are the physical barriers of a cell in-the protoplast fusion experiment? How are the barriers overcome?
Find out the various components of the medium 12.used for propagation of an explant in vitro are ?
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 culture medium (nutrient medium) can be referred to as a highly enriched laboratory soil'. Justify the statement.
You are a Botanist working in the area of plant breeding. Describe the various steps that you will undertake to release a new variety.
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
What is the difference between n breed and a species? Give an example for each category.
A person who is allergic to pulses was advised to take a capsule of Spirulina daily. Give the reasons for the advise.
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) 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.
What are three options to increase food production? Discuss each giving the salient features, merits and demerits.