Transport in plants is internal movement of water, minerals, oxygen and carbon dioxide inside the plant body. The movement of these substances are effected by biological methods, physical methods or chemical methods. In this post we are going to discuss some most important questions and answers which are based on Transpiration.
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Transpiration MCQs and Answers
1. Which among the following is an external factor affecting transpiration?
a) Light
b) Number of stomata
c) Canopy structure
d) Water status of plant
Answer: a
2. Which among the following is an internal factor affecting transpiration?
a) Temperature
b) Humidity
c) % open stomata
d) Wind speed
Answer: c
3. Transpirative loss is studied through girdling experiment.
a) True
b) False
Answer: b
4. The small diameter of the tracheary elements increases ___________
a) adhesion
b) cohesion
c) tensile strength
d) capillarity
Answer: d
5. Statement A: Inner wall is pushed outwards
Statement B: Outer wall is pulled outwards
a) Both the statements are true
b) Both the statements are false
c) Statement A is true but Statement B is false
d) Statement B is true but Statement A is false
Answer: d
6. Statement A: Transpiration creates pressure in xylem sufficient enough to transport water up to 130 m high.
Statement B: Transpiration creates a pushing force.
a) Both the statements are true
b) Both the statements are false
c) Statement A is true but Statement B is false
d) Statement B is true but Statement A is false
Answer: c
7. Which of the following is not a function of stomata?
a) Regulation of turgidity of guard cells
b) Loss of water vapor
c) Loss due to guttation
d) Exchange of O2 and CO2
Answer: c
8. Statement A: C3 plants are twice efficient as C4 plants in terms of fixing carbon dioxide.
Statement B: C4 plant loses twice the amount of water as C3 plant for same amount of CO2 fixed.
a) Both the statements are true
b) Both the statements are false
c) Statement A is true but Statement B is false
d) Statement B is true but Statement A is false
Answer: b