Question

Which of the following statements are correct?

(i) hybridisation means crossing between genetically dissimilar plants
.(ii) cross between two varieties is called inter specific hybridisation.
(iii) introducing genes of desired character into a plant gives genetically modified crop.
(iv) cross between plants of two species is called as inert-varietal hybridisation.

Answer 1

A cross between plants of two species is known as interspecific hybridization, not inter-varietal hybridisation. Inter-varietal hybridization pertains to crossing different varieties within the same species.

Step-by-step explanation:

The statement that a cross between plants of two species is called as inter-varietal hybridisation is incorrect. Inter-varietal hybridisation refers to the mating or crossing of two different varieties of the same species, whereas a cross between two different species is known as interspecific hybridization or cross-species hybridization. When discussing the practice of creating new plants and developing novel plants through hybridization, Mendel's experiments with true-breeding pea plants are a classic example.

By crossing plants true-breeding for violet flower color with plants true-breeding for white flower color, he was able to produce hybrid offspring with predictable inheritance patterns. However, these examples of hybridization occur within the same species, making it a case of intraspecific rather than interspecific or inter-varietal hybridization.