Assertion (A): Tallness of a pea plant is controlled by an enzyme. Reason (R): The gene for that enzyme makes proteins which help the plant to be tall.
The correct option is (A). Both statements are true, and the reason correctly explains the assertion. Tallness in pea plants is controlled by a gene that produces an enzyme responsible for synthesising growth hormones, making the plant tall.
CBSE Class 10 Science Question Paper 2025 with Solutions
cbse class 10 previous year question papers – year wise pdf
Share
The tallness of pea plants is controlled by a gene that produces a specific enzyme responsible for synthesising growth-promoting hormones. The presence of this enzyme results in tall plants, while its absence causes dwarfness. Hence, both the assertion and the reason are true, and the reason correctly explains the assertion. This experiment demonstrates how genes control traits by producing proteins or enzymes that influence the physical characteristics of an organism. The correct option is (A).