The Ripening of Fruit and the Dropping of Leaves and Fruit

question 41

Multiple Choice

The ripening of fruit and the dropping of leaves and fruit are principally controlled by

• A)auxins.
• B)cytokinins.
• C)indoleacetic acid (IAA).
• D)ethylene.

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Definitions:

β-Ketoester

An ester compound containing a ketone group (C=O) at the beta-position relative to the ester group.

Claisen Condensation

A chemical reaction where two esters or an ester and a carbonyl compound react in the presence of a base to form a β-keto ester or a β-diketone.

Ester Enolate

A reactive intermediate formed from the deprotonation of an ester, used in various organic synthesis reactions.

pKa

A quantitative measure of the strength of an acid in solution, representing the acid dissociation constant on a logarithmic scale.