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प्रश्न
Higher Order Thinking Skill (HOT)
Polyploids are characterised by gigantism. Justify your answer.
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उत्तर
An organism having more than two set of chromosome is called polyploidy. It can be induced by physical agents such as heat or cold treatment, X-rays and chemical agents like colchicine. As organisms produced by polyploidy have more than two set of chromosomes they are gigantic.
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संबंधित प्रश्न
Economically important crop plants with superior quality are raised by ______.
A group of plants produced from a single plant through vegetative or asexual reproduction are called a pureline.
Iron fortified rice variety determines the protein quality of the cultivated plant
In vitro fertilisation means the fertilisation done inside the body.
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
State the importance of biofertiliser.
Name three improved characteristics of wheat that helped India to achieve high productivity
Describe mutation breeding with an example.
Biofortification may help in removing hidden hunger. How?
Higher Order Thinking Skill (HOT)
‘P’ is a gene required for the synthesis of vitamin A. It is integrated with genome of ‘Q’ to produce genetically modified plant ‘R’.
- What is P, Q and R?
- State the importance of ‘R’ in India.
