Question

Gibberellin was first discovered from

• A. Fungi
• B. Algae
• C. Bacteria
• D. Root Hairs

Answer 1

The correct option is A

Fungi

The correct option is A.

Explanation of the correct option:

1. Gibberellins are plant growth-regulating hormones.
2. It controls various growth and developmental processes in plants, including stem elongation, seed germination, breaking dormancy, flowering, sex determination, enzyme induction, and leaf and fruit senescence.
3. Gibberellin was first recognized in 1926 by a Japanese scientist, Elichi Kurosawa studying bakane, the 'foolish seedling disease' in rice.
4. It was first isolated in 1935 by Teijiro Yabuta and Sumuki from fungal strains provided by Kurosawa from Gibberella fujikori.
5. Yabuta named the isolate gibberellin.

Explanation of the incorrect options:

Option B:

Algae - It is not isolated from algae.

Option C:

Bacteria - It is not isolated from Bacteria.

Option D:

Root Hairs - It is not isolated from Root Hairs.

Final answer: Gibberellin was first discovered from fungi.