Tag: improvement if crop varieties

Questions Related to improvement if crop varieties

In crop improvement programme, haploids are important because they

biology improvement in food resources crop variety improvement improvement if crop varieties improvement in crop variety

  1. Require one half of nutrients

  2. Are helpful in study of meiosis

  3. Grow better under adverse conditions

  4. Form perfect homozygous individuals on diploidisation.

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Correct Option: D
Explanation:

In crop improvement programme, haploids are important because they form perfect homozygous lines. Homozygous are the pure line selection plants resulting from self pollination. In this way, considerable homozygosity is obtained. Haploids are those plants which possess a gametophytic number of chromosomes. Haploids are used in plant breeding, especially for the production of homozygous plants and in their studies in the detection of mutation.

So the correct answer is ' Form perfect homozygous individuals on diploidisation'

Genetic diversity in agricultural crops is threatened by -

biology improvement in food resources crop variety improvement improvement if crop varieties improvement in crop variety

  1. Introduction of high yielding varieties

  2. Intensive use of fertilizers

  3. Entensive intercropping

  4. Intensive use of biopesticides

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Correct Option: A