Question

Which of the following is not a growth-promoting activity in plants?

• A. Formation of flowers in plants
• B. Formation of seeds in plants
• C. Response of plant towards a wound
• D. Pattern formation in plants

Answer 1

The correct option is C Response of plant towards a wound

Plant growth promoters are the substances that help in the overall growth of the plants. They help in growth-promoting activities like cell division, cell enlargement, pattern formation, tropic growth, the formation of flowers, fruits, and seeds. Auxin, gibberellin, and cytokinin are growth-promoting hormones in plants.

The response of plants towards a wound or stress is a growth inhibitory activity. Wound stress may happen in plants by insect attack or by pathogens or by natural calamities like strong wind or rain or snowfall. The tissues that are affected are more prone to bacterial and viral infections. Hormones like abscisic acid help in recovering the damaged tissues thereby causing changes in metabolism, photosynthesis and respiration that result in inhibition of growth.