Q. No.Consider the following two statements:
I. The direction of movement in the phloem is bi-directional.
II. The source-sink relationship in plants is variable.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
Which one of the following is correctly matched?
1. Passive transport of nutrients-ATP
2. Apoplast- Plasmodesmata
3. Potassium- Readily mobilized
4. Bakanae of rice seedlings-F Skoog
Which one of the following is a case of wrong matching?
1. Root pressure - observable at night and early morning
2. Pressure potential - usually negative
3. Symplast - plasmodesmata
4. Loading of sugars at source - active transport
Find the incorrect match with respect to transport in plants :
1. Simple diffusion – Does not require special membrane protein
2. Active transport – Does not show uphill transport
3. Facilitated transport – Transport saturation can occur
4. Active transport – Highly selective nature
Based on the figure given below, which of the following statements is not correct?
| 1. | Movement of solvent molecules will take place from chamber A to B. |
| 2. | Movement of solute will take place from A to B. |
| 3. | Presence of a semipermeable membrane is a pre-requisite for this process to occur. |
| 4. | The direction and rate of osmosis depend on both the pressure gradient and concentration gradient. |
Match the following 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 |
Codes
1. A-ii, B-iv, C-v, D-i, E-iii
2. A-iii, B-ii, C-iv, D-i, E-v
3. A-i, B-ii, C-iii, D-iv, E-v
4. A-v, B-iv, C-iii, D-ii, E-i
| Assertion: | Water is often the limiting factor for plant growth and productivity in both agricultural and natural environments. |
| Reason: | Plants have very high demands for water. |
| 1. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| 2. | Both assertion and reason are true but the reason is not the correct explanation of the assertion |
| 3. | Assertion is true but reason is false |
| 4. | Both assertion and reason are false |
| I. | Most of the water flow in the roots occurs via the apoplast. |
| II. | The movement of water through the root layers is ultimately symplastic in the endodermis. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
A: Water and mineral uptake by root hairs from the soil occurs through apoplast until it reaches endodermis.
R: Casparian strips in endodermis are suberized.
R: These adaptation are found in xerophytes.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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