1. Where is apoplastic movement shifted to symplastic pathway?
a) Cortex
b) Endodermis
c) Pericycle
d) Xylem
Explanation: Endodermis
2. Which of the following is true about mycorrhizae?
a) Association between roots and fungus.
b) Fungal hyphae have very large surface area that absorb water and mineral from the soil.
c) Roots provide sugar and N-containing compound to the fungus.
d) All the above
Explanation: All the above
3. Which plant seeds cannot be germinated and established without the presence of mycorrhizae?
a) Mango
b) Pulses
c) Pinus
d) Selaginella
Explanation: Pinus plant
4. Root pressure develops due to
a) Passive absorption of ions
b) Active absorption of ions
c) Active absorption of glucose
d) None of these
Explanation: Root pressure develops due to active absorption of ions
5.Effect of root pressure is visible
a) At night
b) At early morning
c) When evaporation is low
d) All of these
Explanation: All of these
6. Guttation is seen in
a) Vein opening near the tip of grass blade
b) Leaves of many herbaceous plant
c) Both (a) and (b)
d) Leaves of trees
Explanation: Both (a) and (b)
7. Root pressure contributes to the
a) Ascent of sap in small herbaceous plants.
b) Re-establishment of continuous chains of water molecules in the xylem which often
breaks down under the enormous tension created by transpiration.
c) Guttation
d) All the above
Explanation: All the above
8. What is the approximate rate of the ascent of sap?
a) 5 m/hr
b) 15 m/hr
c) 40 m/hr
d) 2 m/hr
Explanation: 15 m/hr
9. How much percentage of water is used for photosynthesis?
a) 1%
b) 2%
c) 3%
d) 4%
Explanation: 1%
10. Stomata helps in
a) Transpiration
b) Exchange of gases
c) Both (a) and (b)
d) none of these
Explanation: Both (a) and (b)