Question

Find out the correct sentence.
(i) Hybridization means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called inter-specific hybridization.
(iii) Introducing genes of the desired character into a plant gives genetically modified crops.
(iv) Cross between plants of two species is called inter varietal hybridization.

• A. (i) and (iii)
• B. (ii) and (iv)
• C. (ii) and (iii)
• D. (iii) and (iv)

Answer 1

The correct option is A

(i) and (iii)

The correct option is A

The explanation for the correct option:

1. Hybridization refers to crossing between genetically dissimilar plants or obtaining a hybrid.
2. Hybridization help in the creation of new species.
3. Introducing genes of the desired character into a plant gives a genetically modified crop is done by hybridization.
4. Crops developed with desired characteristics by integrating foreign genes with their genome are called genetically modified crops.
5. Bt cotton, Bt Brinjal, Golden Rice, and Herbicide-tolerant plants, are genetically modified plants.
   

Explanations for the incorrect option:

Option B

1. Variety means the group of plants selected from a species
2. Inter-varietal hybridization is a cross between the two varieties of the same species
3. Interspecific hybridization is a cross between the different species of the same genus.
4. Interspecific hybridization involves crossing plants belonging to two different species that are not normally sexually compatible.
5. An example of an interspecific hybridization is the mule a cross between a male donkey and a female horse.
6. Cross between two varieties of wheat or rice is an example of inter-varietal hybridization
   

Option C

1. Interspecific hybridization is a cross between the different species of the same genus.
2. Interspecific hybridization involves crossing plants belonging to two different species that are not normally sexually compatible.
3. An example of an interspecific hybridization is the mule a cross between a male donkey and a female horse.
4. Introducing genes of the desired character into a plant gives a genetically modified crop is done by hybridization.
5. Crops developed with desired characteristics by integrating foreign genes with their genome are called genetically modified crops.
6. Bt cotton, Bt Brinjal, Golden Rice, and Herbicide-tolerant plants, are genetically modified plants.

Option D

1. Variety means the group of plants selected from a species
2. Inter-varietal hybridization is a cross between the two varieties of the same species
3. Cross between two varieties of wheat or rice is an example of inter-varietal hybridization
4. Introducing genes of the desired character into a plant gives a genetically modified crop is done by hybridization.
5. Crops developed with desired characteristics by integrating foreign genes with their genome are called genetically modified crops.
6. Bt cotton, Bt Brinjal, Golden Rice, and Herbicide-tolerant plants, are genetically modified plants.

Final answer: Hybridization means crossing between genetically dissimilar plants, Introducing genes of the desired character into a plant, and giving genetically modified crops are the correct sentences.