Siddhi placed three stalks of celery under the conditions indicated in the diagram below. In which of the setups P, Q or R would the dye move furthest up the stalk?
A
P
B
Q
C
R
D
Equally up in P and R
Text Solution
Verified by Experts
The correct Answer is:
C
Transpiration from leaf aids in movement of water with dissolved solutes, up a stalk. Set up Q has no leaf, thus dye will move the least up in it. In set up P, transpiration is limited by the plastic bag. The humid air will remain around the leaf and transpiration will be reduced. As a result, dye will move up to a lower height. In set up R, the humid air around the leaf will diffuse in environment freely and as a result, transpiration will continue unchecked, and the dye will move furthest up the stalk.
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