Question

What are plant hormones?​

Answer 1

Answer:

plant hormones are signal molecules produce within plants . that occur in extremely low concentration

Answer 2

$\huge\underline\mathbb{\red Q\pink{U}\purple{ES} \blue{T} \orange{IO}\green{N :}}$

What are plant hormones?

$\huge\underline\mathbb{\red A\pink{N}\purple{S} \blue{W} \orange{E}\green{R :}}$

★ Major Plant Hormones are :

• Auxins .
• Cytokinins.
• Gibberellins.
• Adscisic Acid.
• Ethylene.

★ Reactions of Plant Hormones are :

$\huge\underline\green{ Auxins \: : }$

◼ Cell elongation and differentiation of shoots and roots.

$\huge\underline\green{ Cytokinins \: : }$

◼ Promotion cell division, promotion of sprouting of lateral buds, delaying the ageing in leaves,opening of stomata

$\huge\underline\green{ Gibberellins \: : }$

◼ Germination of seeds & sprouting of buds, elongation of stems, stimulation of flowering,development of seedless fruits, breaking the dormancy on seeds and buds.

$\huge\underline\green{ Abscisic \: Acid \: : }$

◼ Closing of stomata, seed dormancy, promoting aging of leaves.

$\huge\underline\green{ Ethylene \: : }$

◼ Ripening of fruits.