Correct option is D
The correct answer is: (D) Phenotypic Selection
Explanation:
Phenotypic selection is a plant breeding method in which plants are selected based on observable traits (phenotype) such as height, yield, disease resistance, or drought tolerance and then propagated.
This method does not involve any direct modification of the genetic makeup (DNA) of the plants but rather relies on natural genetic variation present in the population.
Information Booster:
Process:
Plants are observed and evaluated for desirable traits.
The process is repeated over multiple generations to improve the trait in the plant population.
Advantages:
Simple and low-cost method of improving crops.
Maintains natural genetic diversity.
Useful for improving quantitative traits like yield and stress tolerance.
Knowledge Booster :
- Hybridization: Involves crossing two genetically different plants to create a hybrid with improved traits. Ex. Crossing high-yield wheat with disease-resistant wheat to get a new variety with both traits.
- Genetic Engineering: Involves directly modifying the plant’s DNA using biotechnology. Ex. Inserting a gene for insect resistance in Bt cotton.
- Cloning: Produces genetically identical copies of a plant through asexual reproduction. Ex. Tissue culture propagation of banana plants.
English
20 Questions
80 Marks
24 Mins
