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
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.
Answer:
Explanation:
And a movement of plant .........