8
MCQ (Single Correct Answer)
Water potential of pure water at standard temperature is equal to
A
10
B
20
C
zero
D
None of these
9
MCQ (Single Correct Answer)
Choose the correct option mycorrhiza is a symbiotic association of fungus with root system which helps in
A. absorption of water
B. mineral nutrition
C. translocation
D. gaseous exchange
A
Only A
B
Only B
C
Bothg A and B
D
Both B and C
10
MCQ (Single Correct Answer)
Based on the figure given below which of the following statements is not correct?
A
Movement of solvent molecules will take place from chamber A to B
B
Movement of solute will take place from A to B
C
Presence of a semipermeable is a pre-requisite for this process to occur
D
The direction and rate of osmosis depends on both the pressure gradient and concentration gradient
11
MCQ (Single Correct Answer)
Match the followings and choose the correct option.
| Column I | Column II | ||
|---|---|---|---|
| A. | Leaves | (i) | Anti-transpirant |
| B. | Seed | (ii) | Transpiration |
| C. | Roots | (iii) | Negative osmotic potential |
| D. | Aspirin | (iv) | Imbibition |
| E. | Plasmolysed cell | (v) | Absorption |
A
A-ii, B-iv, C-v, D-i,E-iii
B
A-iii, B-ii, C-iv, D-i, E-v
C
A-i, B-ii, C-iii, D-iv, E-v
D
A-v, B-iv, C-iii, D-ii, E-i
12
Mark the mismatched pair.
| Column I | Column II | ||
|---|---|---|---|
| A. | Amyloplast | (i) | Store protein granule |
| B. | Elaioplast | (ii) | Store oils or fats |
| C. | Chloroplasts | (iii) | Contain chlorophyll pigments |
| D. | Chromoplasts | (iv) | Contain coloured pigments other than chlorophyll |
Explanation
Amyloplasts are the colourless plastids which store starch but not the protein granules. Other pairs are correctly matched.