Name all the plant harmones and their functions?

Question

Answer

Plant Hormones and their Functions

Auxins: Auxins are responsible for the growth of the stem, roots, and leaves. They also help in the development of fruits and flowers. Auxins promote cell elongation, cell division, and root formation. They also help in apical dominance and phototropism.

Gibberellins: Gibberellins promote stem elongation, seed germination, and flowering. They also help in the development of fruits and leaves. Gibberellins also induce bolting in plants, which is the rapid growth of the stem. They also help in breaking dormancy in seeds and buds.

Cytokinins: Cytokinins promote cell division, delays aging, and stimulate the growth of lateral buds. They also help in the development of chloroplasts and the formation of fruits. Cytokinins work in coordination with auxins to promote the growth of the plant.

Abscisic Acid: Abscisic acid is responsible for the closure of stomata during water stress. It also promotes seed dormancy and inhibits the growth of the plant. Abscisic acid helps in the adaptation of plants to environmental stresses such as drought and high salinity.

Ethylene: Ethylene is responsible for ripening of fruits and the abscission of leaves and flowers. It also promotes the growth of roots and stems. Ethylene acts as a stress hormone, helping plants to adapt to environmental stresses such as flooding and drought.

Answer

Answer

1.auxin.....first hormone help in growth of plant
2.gibberalin. ....second hormone help in growth of hormone
3.abscisic......help in dormancy of seed
4.cytosis.....help in division of cell

Answer

Auxin helps in the growth of tipsgibberellin helps in the elongation of stemcytokinin helps in cell divisionetylene helps in the ripening of fruitsabscisic acid works as an messenger and alert the plant about water scarcity or so..........it gets perpare in the droughted leaf or root

Answer

Plant Hormones are the plant growth regulators. They require in small amount but necessary for functioning of Plants.
There are several Plant Hormones classes, namely, Auxin, Cytokinin, Gibberellin, Abscisic Acid, Ethylene.
Here are the functions of plant hormones in short.
Functions of Auxin : Cell enlargement, apical dominance, prevention from bending; promote xylem differentiation, healing of wounds of plants.
Applications of Auxin include - root initiation in callus during plant tissue culture, application of auxins to induce parthenocarpy etc.
Function of Cytokinin : promote cell division, apical dominance, delay in senescenes ( aging ), phloem transport, accumulation of salts in cells, production of female flowers, increase resistance to extreme temperatures and diseases.
Applications of Cytokinin include - stem initiation in callus during plant tissue culture, disease resistant varieties in genetically modified crops
Functions of Gibberellin : promote increase in fruit size, inter-nodal elongation, seed germination
Applications of Gibberellin include - dose of Giibberellin during parthenocarpy, production of male flowers on genetically female plants, breaking dormancy of seed, bud, tuber etc.
Functions of Abscisic Acid : abscission of leaves, reduce transpiration, inhibit cambium activity, bud dormancy in seed during winter, seed development and maturation, induce flowering in some SDPs, synthesis of carotenoids in green organs
Functions of Ethylene : inhibit stem elongation; promote fruit ripening, increase girth of stem, speed of senescence, abscission of leaves
Applications of Ethylene - artificial ripening of fruits, sprouting of storage organs.

Answer

1. Auxins - promotes cell growth and differentiation especially on the tips of plants. It controls plants response to light.

2. Cytokinin - promotes cell division and lateral growth in plants. It helps in the rapid division in seeds and fruits.

3. Gibberellins - helps in breaking dormancy in seeds and buds. It can be used in the production of seedless fruits.

4. Abscisic acid - promotes dormancy in seeds and buds. It promotes wilting and falling of leaves.

5. Ethylene - promotes fruit ripening.

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