What are movements in plants
Answers
Answer:
The movements are
Explanation:
Plant movements can be defined as the changes in the spatial orientation or conformation of an organ or its parts. Plant movements include movements toward light, opening and closing of flowers, growth of developing roots in search of water and nutrients, etc.
Plant motions may be divided into two categories: nastic and tropic.
Nastic motions are the movements of a plant in response to an external stimulus whose direction is not defined by the stimulus's direction.
Examples:
1. Daisy blossoms close at sunset and reopen at dawn.
2. The touch-me-not plant, Mimosa pudica, has small leaflets that fold up in reaction to mechanical stimuli like touch, rain, or even a strong wind.
Photonasty and nyctinasty are two different kinds of nastic motions.
Photonasty is a nastic movement that corresponds to the day's light and dark periods. Primrose flowers, for example, bloom at night but close during the day.
The movement of nyctinasty is a reaction to darkness.
By dusk, the rain tree's leaves curl inward.
Tropism, or tropic movement, refers to the movement of plant organs toward or away from a stimulus. The stimulus might be any substance or action that causes the plant to move.
The following sorts of tropic motions exist:
1. Phototropism: Phototropism is defined as the movement of plant components toward or away from light. Roots, for example, grow in the opposite direction of the sun.
2. Geotropism: Geotropism refers to the movement of plant organs as a result of gravity. Example: Despite gravity, the branch climbs upward.
3. Chemotropism: Chemotropism refers to the movement of plant organs as a result of a chemical stimulation. The pollen tube, for example, develops toward the sweet material released by the flower's stigma.
4. Hydrotropism: Hydrotropism refers to the movement of plant organs as a result of water. Roots, for example, grow toward water sources.
5. Thigmotropism: Thigmotropism refers to the movement of plant organs in response to stimuli induced by physical contact with solid objects. Weak-stemmed plants, for example, use their twining stems and tendrils to climb on other plants and objects for support.