Advertisements
Advertisements
Question
Higher Order Thinking Skill (HOT)
Polyploids are characterised by gigantism. Justify your answer.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Which method of crop improvement can be practised by a farmer if he is inexperienced?
Economically important crop plants with superior quality are raised by ______.
The process of producing an organism with more than two sets of chromosome is called mutation.
A group of plants produced from a single plant through vegetative or asexual reproduction are called a pureline.
Assertion: Colchicine reduces the chromosome number.
Reason: It promotes the movement of sister chromatids to the opposite poles.
Give the name of wheat variety having higher dietary fibre and protein.
State the importance of biofertiliser.
Describe mutation breeding with an example.
With a neat labelled diagram explain the techniques involved in gene cloning.
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.
