Question

Plant hormones show various actions and visible effects on plants. They also help in the conduction of vital activities of plant-like phototropism, negative geotropism, growth, ripening of fruits etc. Each hormone shows particular action and visible effect on plants. Consider the given action and visible effects of hormones on plants and select the specific hormone responsible for these activities.

Hormones	Action	Visible effect
A	Cell elongated under turgor pressure	Tips bends towards light.
B	Growth of cells	Growth of plants, germination of seeds, flowering, and fruits enlargements.
C	Antagonizes auxins on leaf buds promotes cell division and differentiation	Growth of lateral branches
D	Growth inhibition	Seed dormancy and vernalization and drought tolerance
E	Fruits ripening and leaf drop	Increased sugar in fruit, leaf, and fruit drop.

Answer 1

Plant Hormones:

1. Plants generate a category of hormones known as auxins.
2. Auxins control plant development by promoting cell division and elongation in plant cells through turgor pressure, which causes the plant's tip to bend towards the light.
3. Gibberellins are growth hormones that promote cell elongation in plants, allowing them to grow taller.
4. They're also involved in things like stem elongation, germination, flowering, and fruit ripening.
5. Cytokinin are produced in the roots.
6. They're required for cell growth and differentiation to be healthy.
7. They help the growth of lateral branches.
8. Abscisic acid, or ABA, is a plant growth inhibitor.
9. It aids vernalization and induces dormancy in plants.
10. Ethylene is the plant hormone that controls fruit ripening, flower wilting, and leaf fall.
11. Its main function is to stimulates the conversion of starch and acids to sugars.

Hormones	Action	Visible effect
Auxins	Cell elongated under turgor pressure	Tips bends towards light.
Gibberellins	Growth of cells	Growth of plants, germination of seeds, flowering, and fruits enlargements.
Cytokinin	Antagonizes auxins on leaf buds promotes cell division and differentiation	Growth of lateral branches
Abscisic Acid	Growth inhibition	Seed dormancy and vernalization and drought tolerance
Ethylene	Fruits ripening and leaf drop	Increased sugar in fruit, leaf, and fruit drop.