2. Crop Physiology

Plant Hormones — Quiz

Test your understanding of plant hormones with 5 practice questions.

Practice Questions

Question 1

Which plant hormone is primarily responsible for promoting cell elongation in stems and is involved in phototropism and gravitropism?

Question 2

A plant hormone that promotes cell division in roots and shoots, and delays the aging of leaves (senescence), is known as:

Question 3

Which plant hormone is a gaseous hormone primarily associated with fruit ripening and senescence (aging) of plant tissues?

Question 4

During periods of drought, which plant hormone increases in concentration to induce the closure of stomata, thereby reducing water loss?

Question 5

Which plant hormone is responsible for breaking seed dormancy and promoting stem elongation, often used commercially to increase fruit size in grapes?