PDF chapter test TRY NOW
1. Find out the correct sentence
(i) Hybridization means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as interspecific hybridization.
(iii) Introducing genes of desired character into a plant gives genetically modified crop.
(iv) Cross between plants of two species is called as inter-varietal hybridisation.
(i) Hybridization means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as interspecific hybridization.
(iii) Introducing genes of desired character into a plant gives genetically modified crop.
(iv) Cross between plants of two species is called as inter-varietal hybridisation.
2. Weeds affect the crop plants by
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