Explanation:

• Conventional plant breeding involves crossing species of the same genus to provide the offspring with the desired traits of both parents.
• Genetic modification aims to transcend the genus barrier by introducing an alien gene in the seeds to get the desired effects. The alien gene could be from a plant, an animal or even a soil bacterium.
• Bt cotton is the only Genetically Modified (GM) crop that is allowed in India. It has alien genes from the soil bacterium Bacillus thuringiensis (Bt) that allows the crop to develop a protein toxic to the common pest pink bollworm.
• While Herbicide Tolerant Bt (Ht Bt) cotton, on the other hand is derived with the insertion of an additional gene, from another soil bacterium, which allows the plant to resist the common herbicide glyphosate. It is not an approved gene in India. Hence all statements are correct.