Plant Hormones

Front

What plant hormone is responsible for promoting stem elongation and seed germination?

Back

Gibberellins

Front

Where are auxins primarily formed in a plant?

Back

At the tip of the stem and root.

Front

Which hormone is known to promote seed dormancy in plants?

Back

Abscisic acid.

Front

What effect do auxins have on plant growth direction?

Back

Auxins promote elongation of cells on the side of the plant away from light, causing the plant to bend towards the light (phototropism).

Front

What is the role of gibberellins in seed germination?

Back

Gibberellins stimulate the breakdown of food reserves in seeds, promoting germination.

Front

How do auxins affect lateral growth in plants?

Back

Auxins promote vertical growth; stopping auxin application encourages lateral growth.

Front

What is the primary function of cytokinins in plants?

Back

Cytokinins promote cell division and can delay leaf senescence.

Front

What is the role of ethylene in plant development?

Back

Ethylene is a gas that promotes fruit ripening and can influence leaf abscission.

Front

How do abscisic acid levels change in response to drought conditions?

Back

Abscisic acid levels increase, leading to stomatal closure to reduce water loss.

Front

What is phototropism and which hormone is primarily involved?

Back

Phototropism is the growth of a plant towards light, primarily regulated by auxins.