Science, asked by sangeetarevankar12, 11 months ago

name the plant hormone that promotes growth in plants

what is the significance of tropic Movement in plants explain any two types of tropic movements

which hormone is known as emergency hormone in our body how it helps in coping during emergency

Where are different receptors present in our body what are their functions

Answers

Answered by Axelsen1597
0

Answer:

i. Auxins

Explanation:

i. Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation.

ii. Tropic movement is important due to following reasons : (i) They- serve as a protective function and helps in developing a sudden response for a change. (ii) Helps in growth and development of plants. ... These movements are seen in stigmas, stamens and leaves of many plants.

The six types are: (1) Thigmotropism (Haptotropism) (2) Phototropism (3) Geo-tropism (4) Thermotropism (5) Chemo-tropism and (6) Hydro-tropism.

Hydro-tropism -

The movement of plant organs in response to moisture is termed as hydro-tropism.

Roots grow towards the source of moisture and hence are positively hydro-tropic.

An uninterrupted supply of water to the plant is ensured.

Gravitropism or Geo-tropism -

The movement of plant organs in response to gravity is termed as gravitropism.

Roots are positively gravitropic since they grow into the soil.

The shoot grows upwards (against gravity) and hence is negatively geotropic.

Answered by Anonymous
2

Answer:

Explanation:

And a movement of plant .........

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