Engineering Questions with Answers - Multiple Choice Questions

MCQs on Absorption and Radial Movement of Water

1 - Question

The primary site of water absorption is___________
a) Phloem
b) Xylem
c) Shoot
d) Root

View Answer

Answer: d
Explanation: The absorption of water takes place from the radical root which is developed by the germination of seed and is called as the first root.




2 - Question

Which of the following is NOT the development zone of developing roots?
a) Radical zone
b) Meristematic zone
c) Elongation zone
d) Maturation zone

View Answer

Answer: a
Explanation: Developing roots have been differentiated into three development zones i.e., meristematic zone. Maturation zone, and elongation zone.




3 - Question

Which of the following zone is also known as the root hair zone?
a) Radical zone
b) Maturation zone
c) Elongation zone
d) Meristematic zone

View Answer

Answer: b
Explanation: The zone of differentiation, maturation zone is also known as the root hair zone. Root hairs are the extensions which increase the surface area and help in absorption of more water and soil nutrients.




4 - Question

Name of the protein, which is involved in the transfer of water across the cellular membrane?
a) Keratin
b) Alanine
c) Arginine
d) Aquaporin

View Answer

Answer: d
Explanation: Aquaporins are the transport proteins which involve the transfer of water accompanied by some submicroscopic bulk flow.




5 - Question

Soil is the complex medium.
a) True
b) False

View Answer

Answer: a
Explanation: Soil is the mixture of organic and inorganic materials, water, dissolved solutes and air. The complex nature of the soil depends on its type.




6 - Question

. What is field capacity?
a) Water holding capacity of the crop
b) Water holding capacity of soil
c) Water holding capacity of roots
d) Water utilization capacity of plant

View Answer

Answer: b
Explanation: Field capacity is the water holding capacity of the root. It shows the maximum amount of water that a soil can hold after the free drainage.




7 - Question

Name the term which describes the plant wilt beyond recovery?
a) Saturation
b) Hypertonic
c) Permanent wilting
d) Root pressure

View Answer

Answer: c
Explanation: The amount of water, soil hold at which plant goes flaccid beyond recovery is called the permanent wilting percentage.




8 - Question

Which pathway is used to transport water from the epidermis to a tracheary element of root?
a) Osmotic potential
b) Pressure potential
c) Symplastic pathway
d) Apoplastic pathway

View Answer

Answer: d
Explanation: Apoplastic pathway is the major pathway for the transport of water from the epidermis to a tracheal element of roots.




9 - Question

Name the term given to the movement of water against gravitational force, from root to the aerial parts of the plant.
a) Ascent of sap
b) Root pressure
c) Radial movement
d) Field capapcity

View Answer

Answer: a
Explanation: The movement of water from root to the aerial parts of the plants against gravitational force is called ascent of sap.

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