1. In flowering plant, we need to transport
a) Water and mineral nutrients
b) Organic nutrients
c) Plant growth regulators
d) All of these
Explanation: All of these
2. For covering a small distance, the substances move by
a) Diffusion
b) Cytoplasmic streaming
c) Active transport
d) All of these
Explanation: All of these
3. Transport over longer distance is known as
a) Translocation
b) Transformation
c) Transduction
d) Diffusion
Explanation: Transport over longer distance is known as Translocation
4. Which of the following undergoes multidirectional transport?
a) Water
b) Mineral nutrients
c) Organic nutrients
d) Both (b) and (c)
Explanation: Both (b) and (c)
5. Transport of which substance is essentially unidirectional in xylem?
a) Water
b) Mineral nutrients
c) Organic nutrients
d) Both (b) and (c)
Explanation: Both (b) and (c)
6. Select the correct statement from the following:
a) Mineral nutrients taken up by the roots and transported upward into stem, leaves and
growing region.
b) When a plant part undergoes senescence, the nutrient always remain in the senescence
part and gets lost from the plant.
c) In fl owering plant the complex traffi c of compound in unorderly manner moving in
diff erent direction.
d) All hormones shows polarised movement.
Explanation: Mineral nutrients taken up by the roots and transported upward into stem, leaves and growing region.
7. Diffusion can occur between
a) One part of cell to other part
b) Cell to cell
c) Intercellular space to outside of leaf
d) All of these
Explanation: All of these
8. The only mode of gaseous movement in plant body is
a) Diffusion
b) Osmosis
c) Facilitated transport
d) All of these
Explanation: The only mode of gaseous movement in plant body is diffusion
9. Which of the following is incorrect about diffusion?
(1) Molecules move in random fashion.
(2) It occurs from higher to lower concentration.
(3) It is a slow process.
(4) It does not depend on living system.
(5) Protein carriers are required.
(6) It is a passive process.
a) Only 1 and 5
b) Only 5
c) 1, 3 and 5 only
d) Only 4
Explanation: Only 5
10. Diffusion rate is affected by
a) Concentration gradient
b) Membrane permeability through which it occur
c) Pressure and temperature
d) All of these
Explanation: All of these