Transport In Plants Test

Transport In Plants

This is Transport In Plants Test-05 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
In plants, capillarity is aided by the small diameter of
  • A
    Cortical cells
  • B
    Phloem tissue
  • C
    Parenchyma cells
  • D
    Trachery elements
    Correct
2
Water molecules are attracted to each other inthe liquid phase more than to water in the gas phase
  • A
    Adhesion
  • B
    cohesion
  • C
    capillarity
  • D
    Surface tension
    Correct
3
Various ions, and water from soil can be transported upto a small height in stems by
  • A
    Suction pressure
  • B
    Turger pressure
  • C
    Root pressure
    Correct
  • D
    Osmotic pressure
4
The concentration of minerals in the soil is usually
  • A
    Higher than the concentration of minerals in root
  • B
    Lower than the concentration of minerals in root
    Correct
  • C
    Diluted in than in root
  • D
    Equilibrium in both soil and root
5
Organic and mineral nutrients transported by
  • A
    Unidirectional
  • B
    Multidirectional
    Correct
  • C
    Symport
  • D
    Antiport
6
Solute potential of a solution is always
  • A
    Between 0.1 and 1
  • B
    Equal to 0
  • C
    More than 0
  • D
    Less than 0
    Correct
7
The expulsion of pure water from a solution through a semi permeable membrane under the influence of pressure higher than the osmotic pressure is known as
  • A
    Osmosis
  • B
    Reverse osmosis
    Correct
  • C
    Ion transport
  • D
    Plasmolysis
8
A sudden increase in \(C{O_2}\) concentration around a leaf will cause
  • A
    Closure of stomata
  • B
    Wider opening of stomata
  • C
    Increase in transpiration
  • D
    Decrease in transpiration due to closure of stomata
    Correct
9
Select the correct statement
  • A
    Transport in phloem is unidirectional
  • B
    Transport in xylem is bidirectional
  • C
    Transport in phloem is bidirectional
    Correct
  • D
    Transport in xylem and phloem both are unidirectional
10
How many types of aquaporins are recorded?
  • A
    5 types
  • B
    4 types
  • C
    12 types
  • D
    8 types
    Correct
11
The process of movement of molecules across a membrane independent of other molecule is called
  • A
    Symport
  • B
    Antiport
  • C
    Cotransport
  • D
    Uniport
    Correct
12
Active absorption differ from passive absorption in
  • A
    Speed and direction of movement
  • B
    Direction and utilisation of ATP
    Correct
  • C
    Absence of root and season
  • D
    Type of plant and metabolic energy
13
The translocation of phloem is explained by
  • A
    Diffusion
  • B
    Pressure flow hypothesis
    Correct
  • C
    mass /bulk flow hypothesis
  • D
    Transpiration
14
Phloem tissue is composedof
  • A
    vessels
  • B
    Sieve tube
    Correct
  • C
    Tracheids
  • D
    parenchyma cells
15
Accumulation of which one of the following acids results in closure of stomata
  • A
    PEP
  • B
    Aspartic acid
  • C
    OAA
  • D
    Malic acid
    Correct