Question

Which of the following enhances or induces the fusion of protoplasts?

• A. Sodium chloride and potassium chloride
• B. IAA and gibberellins
• C. IAA and kinetin
• D. Polyethylene glycol and sodium nitrate

Answer 1

The correct option is D

Polyethylene glycol and sodium nitrate

The correct option is D.

Explanation of the correct option:

1. The fusion of protoplast involves chemicals, polyethelene glycol and sodium nitrate which are also called fusogenic chemicals.
2. The sodium ions induce the reorganization of lipoproteins which allows the fusion when two regions get in contact
3. The polyethelene glycol provides tight adhesion by aggregating the protoplast from different species or cells

Explanation of incorrect options:

Option A

Sodium chloride and potassium chloride are mineral supplements in various aspects

Option B

IAA and Gibberellins are plant growth regulators that help in cell elongation, germination, flowering, etc.

Option C

IAA and kinetins are plant growth regulators that help in cell elongation and cell division.

Final answer: Polyethylene glycol and sodium nitrate enhance or induce protoplast fusion.