Chapter 11: Transport in Plants
NCERT Solutions for CBSE Class 10 Biology — 17 solved questions with detailed explanations.
Solved Questions
Q1. Guttation occurs through:
- stomata
- lenticels
- root hairs
- hydathodes
Difficulty: Easy · Topic: Transport in Plants
Q2. Phloem loading uses:
- active transport
- passive diffusion only
- osmosis only
- no energy
Difficulty: Easy · Topic: Transport in Plants
Solution
active transport.
Q3. Xylem transports water by:
- transpiration pull (cohesion-tension)
- active transport only
- osmosis only
- diffusion only
Difficulty: Easy · Topic: Transport in Plants
Solution
transpiration pull (cohesion-tension).
Q4. Phloem transport mechanism is:
- diffusion
- pressure flow (Munch hypothesis)
- root pressure only
- transpiration pull
Difficulty: Easy · Topic: Transport in Plants
Solution
pressure flow (Munch hypothesis).
Q5. Turgor pressure is the pressure exerted by:
- air on leaves
- cell contents on cell wall
- cell wall on contents
- soil on roots
Difficulty: Easy · Topic: Transport in Plants
Solution
cell contents on cell wall.
Q6. Water potential (ψ) of pure water is:
- negative
- zero (by convention)
- positive
- undefined
Difficulty: Easy · Topic: Transport in Plants
Solution
zero (by convention).
Q7. Adding solute to water makes ψ:
- no change
- zero
- more negative (decreases)
- more positive
Difficulty: Easy · Topic: Transport in Plants
Solution
more negative (decreases).
Q8. Apoplast pathway is through:
- cell walls and intercellular spaces
- sieve tubes
- vacuoles
- cytoplasm
Difficulty: Easy · Topic: Transport in Plants
Solution
cell walls and intercellular spaces.
Q9. Symplast pathway is through:
- cytoplasm via plasmodesmata
- intercellular spaces
- cell walls
- xylem
Difficulty: Easy · Topic: Transport in Plants
Solution
cytoplasm via plasmodesmata.
Q10. Aquaporins are:
- ion channels
- pumps
- carriers
- water channel proteins
Difficulty: Easy · Topic: Transport in Plants
Solution
water channel proteins.
Q11. Potometer measures:
- respiration
- photosynthesis
- rate of transpiration
- growth
Difficulty: Easy · Topic: Transport in Plants
Solution
rate of transpiration.
Q12. Transpiration is highest in:
- hot, dry, windy conditions
- cold, humid, still
- rainy
- night
Difficulty: Easy · Topic: Transport in Plants
Solution
hot, dry, windy conditions.
Q13. Transpiration pull theory was proposed by:
- Dixon and Joly
- Munch
- Hofmeister
- Strasburger
Difficulty: Easy-Medium · Topic: Water Transport
Solution
Dixon and Joly (1894) proposed the cohesion-tension theory (transpiration pull) for ascent of sap.
Q14. Root pressure is maximum during:
- Daytime
- Night
- Afternoon
- Noon
Difficulty: Easy-Medium · Topic: Root Pressure
Solution
Root pressure is maximum at night (early morning guttation) when transpiration is minimal.
Q15. Active transport requires:
- sunlight
- only water
- no energy
- ATP energy
Difficulty: Easy-Medium · Topic: Transport in Plants
Q16. Osmosis is movement of water through:
- cell wall only
- no membrane
- any membrane
- semipermeable membrane
Difficulty: Easy-Medium · Topic: Transport in Plants
Solution
semipermeable membrane.
Q17. Plasmolysis occurs when cell is placed in:
- hypotonic solution
- isotonic solution
- hypertonic solution
- distilled water
Difficulty: Easy-Medium · Topic: Transport in Plants
Solution
hypertonic solution.
Other Chapters in Biology
Want to practice these questions interactively?
Get instant feedback, track progress, and improve with adaptive practice.
Start Practicing Free →
