Question

Auxins are produced by

• A. Old leaves
• B. Fruits
• C. Buds
• D. Wood

Answer 1

The correct option is C

Buds

The correct answer is Option C.

Explanation of the correct option:

1. Auxin is one of the phytohormone or plant hormone which promotes growth in plants.
2. IAA and IBA are naturally occurring auxins found in plants.
3. Auxin is produced in young shoots, buds, young leaves and roots where growth occurs by cell elongation and is stimulated by presence of sunlight.

Explanation of the incorrect options:

Option A:

Young leaves produce auxins not the old leaves.

Option B:

Fruits do not produce auxins, they produce ethylene for the ripening of them in mature stage.

Option D:

Wood is the hard, fibrous structure which act as a protective layer and do not produce auxins.

Final answer: Auxins are produced by buds.