Question

(i) Hybridization means crossing between genetically dissimilar plants

(ii) Cross between two varieties is called as inter specific hybridization

(iii) Introducing genes of desired character in to a plant gives genetically modified crop

(iv) Cross between plants of two species is called as inter varietal hybridization

(a) (i) અને (ii)(b) (ii )અને (iv) (c) (ii )અને (iii) (d) (iii )અને (iv)​

Answer 1

Answer:

Hybridisation means crossing between genetically dissimilar plants. Cross between two varieties is called as inter specific hybridisation. ... Genetically modified crops can be produced by insertion of genes with desired traits by the process of hybridisation.

Interspecific hybridisation means cross mating between two different species but sharing same genera. For example, a cross breed between a lion and a tiger, they both are from same genus Panthera but different species. So the statement that cross between two varieties is called interspecific hybridisation is wrong.

Cross between two varieties is called either Inter -varietal hybridization (if varieties are different) or Intra-varietal hybridization (if varieties are same). Hence statement (ii) is wrong. Introducing genes of desired character into a plant gives genetically modified crop by modifying the DNA of plant.

Cross between two species which are from the same genus is called interspecific hybridization. Cross between the two different varieties of species is called intervarietal hybridization.

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