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1. Who isolated auxin and from where ?

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2. Who coined the term gibberellin ?

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3. Term kinetinwas coined by whom ?

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4. What is C/N ratio ?

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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.

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6. Give examples of antagonist with respect to plant hormones

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7. Who discovered gibberellin ?

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8. Name various naturally occuring phytohormones.

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9. What is development ?

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10. What is florigen ?

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