Leaf abscission, fruit fall, and bud dormancy occurs by which phytohormone?

I. More female flowers in cucumber

II. α-amylase production is barley grain

III. Acceleration of fruit ripening in tomato

IV. Delayed in sprouting in potato tubers

From the given effects find, out the effects of ethylene and choose the correct option accordingly

Which hormone was first isolated from human urine?

‘Apical dominance’ in plants is the result of

Which of the following hormones does not naturally occur in plants?

In plants, phototropism is the movement

Which phytohormone accelerates the maturity of juvenile conifers, leading to early seed production when sprayed?

Auxin was isolated by

Which of the following induces flowering in long day plants?

Leaf abscission, fruit fall, and bud dormancy occurs by which phytohormone?

The cut flowers and vegetables can be kept fresh for a long period by this plant hormone.