Ethylene is unique among plant growth regulators due to its:

One hormone helps in ripening of fruits, while the other stimulates closure of stomata. These are respectively

Apple’s elongation and improvement of its shape is performed by

Pick out the correct statements.

i. Cytokinins especially help in delaying senescence.

ii. Auxins are involved in regulating apical dominance.

iii. Ethylene is especially useful in enhancing seed germination.

iv. Gibberellins are responsible for immature falling of leaves.

Identify to which plant hormone, the given function belongs I. Initiates flowering in pineapples II. Induces flowering in mango III. Root growth and root hair promotion I II III

Spraying a young conifer with which hormone would NOT likely hasten maturity and seed production?

Among the following features of ethylene, how many are antagonistic to abscisic acid?

a) Horizontal growth of seedlings b)Promotes abscission of plant organs

c) Effective in fruit ripening d) Breaking seed and bud dormancy

e) Initiates germination in some seeds

Which phytohormone is applied to cucumber plants to enhance fruit production by specifically increasing the number of female flowers?

Choose the correct statement

I. Cytokinin – Delay of leaf senescene

II. Auxin – Apical dominance

III. Ethylene – Seed germination

IV. Gibberellins – Immature falling of leaves

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Ethylene is connected with