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Improvement in Food Resources — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceImprovement in Food Resources1 Mark
MCQ

Find out the correct sentence:

  1. Hybridisation means crossing between genetically dissimilar plants.
  2. Cross between two varieties is called as inter specific hybridisation.
  3. Introducing genes of desired character into a plant gives genetically modified crop.
  4. Cross between plants of two species is called as inter varietal hybridisation.
  • A
    (i) and (iii).
  • B
    (ii) and (iv).
  • C
    (ii) and (iii).
  • D
    (iii) and (iv).
✓

Answer

  1. (i) and (iii).

Explanation:

The crossing between genetically unidentical plants to produce a new variety, i.e., hybrid is called hybridisation. Crossing may be between two different varieties (intra varietal cross breeding), between two different species of some genus (interspecific cross breeding) and between different genera (intergeneric cross breeding).

Genetically, modified crops can be produced by insertion of genes with desired traits by the process of hybridisation.

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