Multiple Choice QuestionsTranspiration would be lowest when
wind velocity is high
enough water is in the soil
atmospheric RH is high
high temperature and light
Which of the following exhibits a direct porportionality to transpiration
Light and RH
Temperature and RH
Temperature and wind
RH and wind
Water in plants is transported by
cambium
phloem
xylem
epidermis
B.
phloem
The water absorbed by root hairs is transported to other parts of the plant through xylem. Phloem transfers food prepared in leaves to the other parts. Cambium is responsible for secondary growth while epidermis is the outermost protective layer of cells.
The most important force which pulls water up in tall trees is
imbibition force
osmotic force
cohesive force
electromagnetic force
The light phase of photosynthesis is called
Hill reaction
photo action
pigment action
chlorophyllous process
Potometer works on the principle of
amount of water absorbed equals the maount transpired
osmotic pressure
root pressure
potential difference between the tip of the tube and that of the plant
Which one of the following does'nt help in molecule transport?
Diffusion
Osmosis
Surface tension
Active transport
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