TRANSPORT IN PLANTS biology MCQ’s questions answers

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TRANSPORT IN PLANTS

Question 121 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Main function of lenticel is ..... [CBSE 2002]
A
Transpiration
B
Guttation
C
Bleeding
D
Gaseous exchange
Question 122 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which one gives the most valid explanation for guard cell movements ..... [MPPMT 1991]
A
Guard cell photosynthesis
B
Starch hydrolysis theory
C
Potassium influx and efflux
D
Transpiration
Question 123 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Active K+ exchange mechanism for opening and closing of stomata was given by ..... [BHU 1997]
A
Darwin sup
B
Levitt
C
Scarth sup
D
Khorana
Question 124 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Match the columns ..... [KCET 2001]
a) Girdling experimentp) Ascent of sap
b) Cobalt chloride paper methodq) Transpiration
c) Atmometerr) Unequal transpiration on two surfaces
d) Bell jar experiments) Translocation in phloem
A
a-s, b-p, c-q, d-r
B
a-s, b-r, c-p, d-q
C
a-q, b-p, c-s, d-r
D
a-r, b-p, c-s, d-q
Question 125 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Stomata open during day due to ..... [Bih PMT 2002]
A
Accumulation of K+ ion and sugar
B
High pH
C
Osmotic effect of ions present in guard cells
D
None of the above
There are 125 questions to complete.

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