Name the precursors of gibberellins.

The primary precursor of gibberellin is _________

Megakaryocytes are the precursors of ………….

A precursor of vitamin A is.

Precursor of ethylene

List out the agricultural role of gibberellins.

Mention the aagricltural role of gibberellins acids.

Write the physiological effects of gibberellins.

Identify the correct statements from the below about "Gibberellins". (I) It improves number and size of fruits in grapes. (II) All gibberellins have gibbane ring. (III) It's chemically related to terpenoids. (IV) It's a derivative of amino acid methionine.

Hormones like gibberellin: