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प्रश्न
Which method of crop improvement can be practised by a farmer if he is inexperienced?
पर्याय
clonal selection
mass selection
pureline selection
hybridisation
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उत्तर
mass selection
Explanation:
Mass selection is easy and suitable for inexperienced farmers because it involves selecting seeds from healthy, high-yielding plants without needing special skills or tools.
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संबंधित प्रश्न
In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are ______.
Economically important crop plants with superior quality are raised by ______.
______ is the chemical used for doubling the chromosomes.
Rice normally grows well in alluvial soil, but ______ is a rice variety produced by mutation breeding that grows well in saline soil.
The process of producing an organism with more than two sets of chromosome is called mutation.
Golden rice is a hybrid.
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.
Higher Order Thinking Skill (HOT)
Polyploids are characterised by gigantism. Justify your answer.
