Question

Match the theories given in column I with the names of scientists listed in column II. Choose the answer which gives the correct combination of the alphabets

	List I		List II
A	Relay pump theory	1	Stocking
B	Transpiration cohesion theory	2	Sir J. C. Bose
C	Mass flow	3	Godlewski
D	Pulsation theory	4	Dixon and Jolly
		5	Ernst Munch

• A. A-3, B-4, C-5, D-2
• B. A-2, B-3, C-4, D-1
• C. A-1, B-3, C-4, D-2
• D. A-3, B-1, C-4, D-3

Answer 1

The correct option is A A-3, B-4, C-5, D-2

Two of the listed theories are grouped as Vital Force Theories. These theories believe that living cells are involved in the ascent of sap e.g Relay pump theory given by Godlewski and Pulsation theory given by Bose. Transpiration- Cohesion theory was put forth by Dixon and Jolly to explain the ascent of sap due to transpiration pull. Mass flow hypothesis was given by Munch to explain translocation of sugars in the plants.