Back to TRANSPORT IN PLANTS
Your Progress
0 / 344 Answered
0
Correct
0
Incorrect
0%
Accuracy
NEET • BIOLOGY • TRANSPORT IN PLANTS
Transport in plants practice · Mixed difficulty
Choose an answer to check it, or open “View answer” to study the explanation. Sign in to save progress to your account.
Practice format and chapter quiz
The practice player uses single-correct-answer MCQs. Chapter quizzes help you review a topic; they are not full-length NEET mock papers.
Take a chapter quiz →
Showing 121-150 of 344 questions
Preparing practice and saved progress…
121
Hard
121 of 344
Understanding
+4 | -1
Pressure potential in thistle funnel develop?
View answer and explanation
Correct option: D
After the entry of water in the thistle funnel
Option D (After the entry of water in the thistle funnel) is correct because pressure potential develops as water enters the thistle funnel due to osmosis, increasing the pressure inside.
122
Hard
122 of 344
Understanding
+4 | -1
The function of companion cells is to
View answer and explanation
Correct option: D
Load sucrose into sieve elements by active transport
Option D (Load sucrose into sieve elements by active transport) is correct because companion cells actively transport sucrose into sieve tube elements using energy.
123
Easy
123 of 344
Remembering
+4 | -1
Root hair absorbs water from soil through
View answer and explanation
Correct option: B
Osmosis
Option B (Osmosis) is correct because root hairs absorb water from the soil due to the difference in water potential between the soil and the root cells.
124
Medium
124 of 344
Remembering
+4 | -1
Stomatal opening is regulated by
View answer and explanation
Correct option: A
Light
Option A (Light) is correct because light is a primary factor that stimulates stomatal opening.
125
Easy
125 of 344
Understanding
+4 | -1
When pea seeds and wheat seeds are put in water, which of the two will imbibe more water?
View answer and explanation
Correct option: B
Pea seeds
Option B (Pea seeds) is correct because pea seeds generally have a higher protein content compared to wheat seeds, and proteins have a greater imbibition capacity than starches.
126
Medium
126 of 344
Remembering
+4 | -1
Stomata that can also open at night, present in:
View answer and explanation
Correct option: A
xerophytes
Option A (xerophytes) is correct because some xerophytes have stomata that can open at night (CAM photosynthesis).
127
Hard
127 of 344
Understanding
+4 | -1
A girdled tree may survive for some time but it will eventually die because?
View answer and explanation
Correct option: C
Sugars and other organic materials will not move downwards
Option C is correct because girdling removes the phloem, which is responsible for transporting sugars and other organic materials downwards from the leaves.
128
Medium
128 of 344
Application
+4 | -1
Examples of bulk flow by a positive hydrostatic pressure gradient and a negative hydrostatic pressure gradient are
View answer and explanation
Correct option: C
Garden hose and suction through a straw, respectively
Option C (Garden hose and suction through a straw, respectively) is correct because a garden hose exemplifies positive hydrostatic pressure, while suction through a straw demonstrates negative hydrostatic pressure.
129
Medium
129 of 344
Understanding
+4 | -1
Which of the following mechanism can explain the transport of sucrose from source to sink?
View answer and explanation
Correct option: A
Osmotic movement of water into sugar loaded sieve tube cells which create a higher hydrostatic pressure into the source than in the sink
Option A (Osmotic movement of water into sugar loaded sieve tube cells which create a higher hydrostatic pressure into the source than in the sink) is correct because the pressure flow hypothesis explains sucrose transport from source to sink by osmotic water movement creating a pressure gradient.
130
Easy
130 of 344
Understanding
+4 | -1
If two types of seeds, like pea and maize are kept in water at the same time. Which among the two will imbibe more water?
View answer and explanation
Correct option: B
Pea seed
Option B (Pea seed) is correct because pea seeds contain more protein compared to maize seeds, and proteins have a higher imbibition capacity than starches.
131
Easy
131 of 344
Remembering
+4 | -1
Mechanism of opening and closing of stomata is controlled by
View answer and explanation
Correct option: A
Guard cells
Option A (Guard cells) is correct because guard cells regulate the opening and closing of stomata by changing their turgor pressure.
132
Easy
132 of 344
Remembering
+4 | -1
Which of the following is the most accepted theory for movement of water through plants?
View answer and explanation
Correct option: A
Cohension theory
Option A (Cohension theory) is correct because the cohesion-tension theory is the most widely accepted explanation for water movement in plants.
133
Medium
133 of 344
Understanding
+4 | -1
Which pathway applies least resistance to the movement of water?
View answer and explanation
Correct option: A
Apoplast pathway
Option A (Apoplast pathway) is correct because the apoplast pathway involves movement through cell walls and intercellular spaces, offering less resistance compared to symplast or transmembrane pathways.
134
Easy
134 of 344
Understanding
+4 | -1
What is mandatory in the process of facilitated diffusion?
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because facilitated diffusion requires a concentration gradient, a carrier protein, and a hydrophilic moiety for interaction with the protein.
135
Medium
135 of 344
Remembering
+4 | -1
The water available to plants for absorption is
View answer and explanation
Correct option: C
Capillary water
Option C (Capillary water) is correct because capillary water is held in the soil pores by capillary forces and is readily available for plant uptake.
Explore Other Chapters in BIOLOGY
View All →
136
Medium
136 of 344
Understanding
+4 | -1
Nyctinasty and seismonasty in plants like bean and touch me not are produced due to
View answer and explanation
Correct option: B
Reversible turgor pressure in the cell of their pulvini
Option B (Reversible turgor pressure in the cell of their pulvini) is correct because nyctinasty and seismonasty are caused by changes in turgor pressure in the pulvinus cells.
137
Medium
137 of 344
Understanding
+4 | -1
Which of the following statements are true/false?
I. The positive hydrostatic pressure is called turgor pressure.
II. Wall pressure exerts to prevent the increase of protoplasm size.
III. Diffusion is more rapid in liquids than in gases.
IV. Diffusion of water through a semi-permeable membrane is called imbibition.
V. Osmosis is movement of substance, which takes place along a diffusion gradient
I. The positive hydrostatic pressure is called turgor pressure.
II. Wall pressure exerts to prevent the increase of protoplasm size.
III. Diffusion is more rapid in liquids than in gases.
IV. Diffusion of water through a semi-permeable membrane is called imbibition.
V. Osmosis is movement of substance, which takes place along a diffusion gradient
View answer and explanation
Correct option: A
I and II are true, while III, IV and V are false
Option A (I and II are true, while III, IV and V are false) is correct because turgor pressure is positive hydrostatic pressure, wall pressure prevents protoplasm increase, diffusion is faster in gases, water movement is osmosis, and osmosis follows water potential gradient.
138
Medium
138 of 344
Understanding
+4 | -1
When sugars enter sieve tubes, water flows by osmosis, resulting in
View answer and explanation
Correct option: C
Turgor pressure
Option C (Turgor pressure) is correct because when sugars enter sieve tubes, the water potential decreases, causing water to flow in by osmosis, which increases the turgor pressure.
139
Easy
139 of 344
Understanding
+4 | -1
Cell 'A' has Mpa cell 'B' has Mpa and cell ‘C’ has Mpa. Then water
diffuses from
diffuses from
View answer and explanation
Correct option: C
B to A to C
Option C (B to A to C) is correct because water diffuses from a region of higher water potential (less negative) to a region of lower water potential (more negative). B (-0.2) > A (-0.3) > C (-0.7).
140
Easy
140 of 344
Understanding
+4 | -1
Osmotic pressure of a solution is
View answer and explanation
Correct option: A
Greater than pure solvent
Option A (Greater than pure solvent) is correct because the presence of solute particles increases the osmotic pressure of a solution.
141
Easy
141 of 344
Remembering
+4 | -1
Who coined the term diffusion pressure deficit?
View answer and explanation
Correct option: C
Meyer
Option C (Meyer) is correct because Meyer coined the term diffusion pressure deficit (DPD), now known as water potential.
142
Medium
142 of 344
Remembering
+4 | -1
Which one is true about guttation?
View answer and explanation
Correct option: A
It occurs through specialized pores called hydathodes
Option A (It occurs through specialized pores called hydathodes) is correct because guttation specifically happens through hydathodes.
143
Medium
143 of 344
Understanding
+4 | -1
Active transport differs from facilitated transport as the former
View answer and explanation
Correct option: D
Is ATP dependent
Option D (Is ATP dependent) is correct because active transport requires energy in the form of ATP to move molecules against their concentration gradient, while facilitated transport does not.
144
Easy
144 of 344
Remembering
+4 | -1
What is the value of DPD?
View answer and explanation
Correct option: C
DPD = OP – WP
Option C (DPD = OP – WP) is correct because DPD (Diffusion Pressure Deficit) is defined as the difference between Osmotic Pressure (OP) and Wall Pressure (WP) or Turgor Pressure (TP).
145
Easy
145 of 344
Remembering
+4 | -1
Which one of the following is not a part of symplast?
View answer and explanation
Correct option: A
Cell wall
Option A (Cell wall) is correct because the cell wall is not part of the symplast, which includes the cytoplasm, plasma membrane, and plasmodesmata.
146
Hard
146 of 344
Understanding
+4 | -1
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options:
View answer and explanation
Correct option: B
Both processes can happen together because the diffusion coefficient of water and is different
Option B (Both processes can happen together because the diffusion coefficient of water and is different) is correct because the diffusion of water vapor and carbon dioxide are independent processes influenced by their respective concentration gradients and diffusion coefficients.
147
Medium
147 of 344
Understanding
+4 | -1
When a plasmolyzed cell is placed in a hypotonic solution then water will move inside the cell. Which force causes this?
View answer and explanation
Correct option: A
DPD
Option A (DPD) is correct because Diffusion Pressure Deficit (DPD) determines the direction of water movement into the cell when it is placed in a hypotonic solution.
148
Medium
148 of 344
Understanding
+4 | -1
Identify the correct statements from the following:
I.Accumulation of ions in the guard cells does not require energy.
II.A high pH favours stomatal opening.
III. Movement of chloride ions into the guard cells accrues in the response to the electrical differential created by ions.
IV. With the entry of several ions and chloride ions, the water potential of guard cells increases
I.Accumulation of ions in the guard cells does not require energy.
II.A high pH favours stomatal opening.
III. Movement of chloride ions into the guard cells accrues in the response to the electrical differential created by ions.
IV. With the entry of several ions and chloride ions, the water potential of guard cells increases
View answer and explanation
Correct option: C
II and III
Option C (II and III) is correct because a high pH favors stomatal opening, and chloride ion movement into guard cells is driven by electrical gradients.
149
Easy
149 of 344
Understanding
+4 | -1
Read the following statements regarding porins and select the correct option given below
I. Porins are transport proteins
II. Channel proteins are a type of transport protein, which are usually gated
III. Carrier protein binds the particular solute to be transported
IV. Particular solute is delivered to the other side of the membrane by carrier proteins
I. Porins are transport proteins
II. Channel proteins are a type of transport protein, which are usually gated
III. Carrier protein binds the particular solute to be transported
IV. Particular solute is delivered to the other side of the membrane by carrier proteins
View answer and explanation
Correct option: C
I, II, III and IV
Option C (I, II, III and IV) is correct because all the statements accurately describe porins, channel proteins, and carrier proteins.
150
Medium
150 of 344
Understanding
+4 | -1
Transpiration facilitates
View answer and explanation
Correct option: C
Absorption of water by roots
Option C (Absorption of water by roots) is correct because transpiration creates a pulling force that aids in the upward movement of water, facilitating water absorption by the roots to replace the lost water.
Revision notes and key takeaways
Review TRANSPORT IN PLANTS in your textbook or class notes, then use this set to check your understanding.
Showing 121-150 of 344 questions