question_answer 30)

  Find out the correct sentence. (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 into a plant gives genetically modified crop (iv) Cross between plants of two species is called as inter varietal hybridization (a) (i) and                            (iii)                          (b) (ii) and (iv)                   (c) (ii) and (iii)       (d) (iii) and (iv)

Answer:

  (a) The crossing between genetically unidentical plants to produce a new variety, i.e., hybrid is called hybridization. Crossing may be between two different varieties (intra varietal cross breeding), between two different species of some genus (inter specific cross breeding) and between different genera (inter generic cross breeding). Genetically, modified crops can be produced by insertion of genes with desired traits by the process of hybridization.