Question

Sir J.C. Bose was supporter of _________ ascent of sap.

• A. Root pressure theory
• B. Physical force theory
• C. Vital force theory
• D. None of these

Answer 1

The correct option is D None of these

Vital force theory:-

Berzelius proposed the origin of organic components by the vital force theory. According to today's organic components of synthesized only within living species.

Physical force theory:-

Godlewski explains the vertical movement of water to the plant. He said that changes in the water potential of the living cells like xylem parenchyma and medullary rays caused to raise water against gravity.

Root pressure theory:-

It is proposed by Priestly. According to this theory, the water which is absorbed by the root hairs from soil collects in the cortical cells which becomes fully turgid. This pressure forces the water up to the xylem cells.

Hence, the correct answer is option D.