Plant Water Relation MCQs | Plant Water Relation Multiple Choice Questions and Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 What is the measure of the osmotic pressure gradient of solutions separated by a semipermeable membrane?
A Tonicity
B Ficks law
C Water potential
D Turgor pressure

Answer: Tonicity
2 Name the condition in which protoplast of the plant cell shrinks away.
A Plasmolysis
B Rigid
C Turgid
D Flaccid

Answer: Plasmolysis
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
3 Which of the following is NOT the component of water potential?
A Assimilation potential
B Pressure potential
C Osmotic potential
D Gravitational potential

Answer: Assimilation potential
4 Loss of water from the stomata of leaves are known as
A Transpiration
B Guttation
C Exudation
D None of these

Answer: Transpiration
5 Plasmolysis occurs due to
A Exosmosis
B Absorption
C Osmosis
D Endoosmosis

Answer: Exosmosis
6 Cooling of plants is caused by
A Transpiration
B Photorespiration
C Guttaion
D None of these

Answer: Transpiration
7 Active uptake of minerals by roots mainly depends on the
A Availability of CO2
B Temperature
C Availability of oxygen
D None of these

Answer: Availability of oxygen
8 The hormone which signals the closure of stomata is
A Abscisic acid
B Gibberelline
C Auxins
D Cytokinine

Answer: Abscisic acid
9 What is the action spectrum of transpiration?
A Blue and red
B Green and ultraviolet
C Orange and red
D None of these

Answer: Blue and red
10 Which is produced during water stress that brings stomatal closure?
A Abscisic acid
B Coumarin
C Ethylene
D None of these

Answer: Abscisic acid
11 Chlorophyllous cells fewer in number, unique in shape with inner walls thicker are
A Bulliform Cells
B Passage Cells
C Guard Cells
D Subsidiary Cells

Answer: Guard Cells
12 Water in plants is transported by which of the followings?
A Xylem
B Epidermis
C Cambium
D None of above

Answer: Xylem
13 The most widely accepted theory of water translocation in plants is ______.
A Root pressure theory
B Cohesion theory
C Water pump theory
D Capillary theory

Answer: Cohesion theory
14 Transpiration is helpful to plants in
A Upward Conduction/Ascent Of Sap
B Cooling
C Loss Of Excess Nutrients
D Loss Of Excess Water

Answer: Upward Conduction/Ascent Of Sap
15 The water available for plants in soil is ________.
A Capillary Water
B Gravitational Water
C Chemically Bound Water
D Hygroscopic Water

Answer: Capillary Water
16 The maximum loss of water in transpiration is from
A Stomata
B Cuticle
C Lenticels
D Hydothodes

Answer: Stomata
17 Water lost through transpiration is
A Rich In Dissolved Salts
B Rich In Organic Solutes
C Pure Water
D All The Above

Answer: Pure Water
18 The conditions under which transpiration would be most rapid?
A Low humidity, high temperature, guard cell are turgid (open) moist soil
B High humidity
C Low velocity of wind
D Excess of water in soil

Answer: Low humidity, high temperature, guard cell are turgid (open) moist soil
19 Which of the following will be zero in a fully turgid cell?
A Suction pressure (DPD)
B Imbibitional pressure
C Wall pressure
D Turgor pressure

Answer: Suction pressure (DPD)
20 Endosmosis occurs when the plant cell is placed in
A Hypotonic solution
B Isotonic solution
C Hypertonic solution
D Strong solution

Answer: Hypotonic solution

Random GK Questions

Q. How will a reduction in Bank Rate affect the availability of credit?
Q. When did iron began to be used more frequently?
Q. Rock benches are associated with
Q. Residual hill in the desert region is known as :
Q. Protein part of enzyme is known as
Q. ‘Mitakshara’ is an authoritative treatise on Hindu law. It was written by:
Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series