Assertion (A): | Imbibition is a type of diffusion. |
Reason (R): | In imbibition, movement of water is along the concentration gradient. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | Seeds can easily absorb water by imbibition. |
Reason (R): | Seeds have no water & imbibition takes place against the concentration gradient. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
1. | 2. | ||
3. | 4. | Both (a) and (b) |
1. | |
2. | |
3. | 4. | Both (1) and (3) |
Assertion (A): | Water is often the limiting factor for plant growth and productivity. |
Reason (R): | Plants have low demand of water. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
I: | The process of translocation through phloem is unidirectional but through xylem, it is bidirectional |
II: | The most readily mobilized elements are phosphorus, sulphur, nitrogen and potassium. |
1. | in same direction with the help of different carriers located at a common site |
2. | in same direction with the help of different carriers located at different sites in the same cell |
3. | in same direction with the help of same carrier |
4. | in opposite direction with the help of same carrier |
A: | Mass flow is faster than diffusion. |
B: | Mass flow is the result of pressure difference between the end points. |
C: | Different substances involved in mass flow move at different paces. |
D: | Mass flow can result through either a positive or a negative hydrostatic pressure gradient. |
1. | (A), (C), (D) only | 2. | (B), (C), (D) only |
3. | (A), (B), (C) only | 4. | (A), (B), (D) only |