Question

What are plant hormones ? Give four different types of plant hormones and state their functions briefly

Answer 1

plant hormones are usually growth promoters or inhibitors. some growth promoters are auxins and gibberellins,while growth inhibitors are abscisic acid and ethylene                                                                                                          AUXINS-cell elongation and differentiation of shoots and roots                              CYTOKININS-promote cell division,promotion of sprouting of lateral buds, delaying the ageing in leaves, opening of stomata                                                GIBBERELLINS-germination of seeds and sprouting of buds ;elongation of stems ;stimulation of flowering; development of fruit, breaking the dormancy in seeds and buds                                                        ABSCISIC ACID-closing of stomata;seed dormancy,promoting aging of leaves                                                                                                                ETHYLENE-ripening of fruits

Answer 2

Answer:

the the chemical that regulate plant growth is called plant hormones.

Explanation:

it it has four plant hormones they are existence cytokinins differences ethylene.

1.Here accident helps in cell elongation and differentiation of shorts and roots

2.the plan hormone is cytokinin promotes OLX plotting of letter Louis delaying the agencies in leaves and

opening of stomata

3. give arrhenius helps in germination of seeds and sprouting of birds flowers and fruits excetra