Question

Discuss theories proposed for mechanism of translocation of food in phloem.

Answer 1

Phloem is the living tissue in vascular plants that transports the soluble materials to the parts of plants which require them.

There are many theories proposed for the mechanism of translocation of food in phloem.

• Protoplasmic theory

• Transcellular streaming theory

• Contractile protein theory

• Electro osmotic theory

• Pressure flow theory