Plant Growth and Development

Biology

Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Plant Growth and Development

Name the hormone which enhances the rate of respiration during the ripening of fruit.

Ethylene.

Give the types of auxins.

Auxins are of two types :

(1) Natural auxins : These are naturally occuring auxins, isolated from plants and are regarded as phytohormones e.g. IAA. NAA etc.

(2) Synthetic auxins : These are synthesized by artificially e.g. IBA 2,4-D etc.

Who isolated auxin and from where ?

Auxin was isolated by F.W. Went from tips of coleoptiles of oat seedling.

What is C/N ratio ?

C/N ratio is the ratio of carbohydrates and nitrogenous compounds which regulate the growth in plants.

Who coined the term gibberellin ?

Yabuta.

Term kinetinwas coined by whom ?

Skoog and Miller.

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