Read the following statements and choose the correct answer from the options given below.

  • A
    In the absence of Casparian strips,plants are unable to control the amount of water and solutes they absorb.
  • B
    Guttation generally occurs during low atmospheric humidity and plentiful soil water.
  • C
    The role of $K^{+}$ in stomatal opening is universally accepted.
  • D
    In $CAM$ plants,stomata remain open during the day and night.

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Similar Questions

Choose true and false statements from the following:
$I.$ Mycorrhizal association between fungus and root of plant $(Pinus)$ is often obligate.
$II.$ $Pinus$ and orchid seeds can germinate and grow into plant in absence of mycorrhizal association.
$III.$ Absorption of water along with mineral solute by root hairs is purely a process of diffusion.
$IV.$ In apoplast pathway,movement of water takes place through cell wall and intercellular spaces.
$V.$ Fungal hyphae provide sugar and organic internal to root.
Choose the correct option.

Choose the correct option:
$(1)$ The transport in xylem is always $unidirectional$.
$(2)$ The process of loss of water in the form of vapour by plants is called $transpiration$.

Choose true and false statements from the following and select the correct option from the set $(A-D)$ given below:
$I.$ Diffusion is an important process of transport in plants since it is the only means for gaseous movement within the plant body.
$II.$ In active transport,pumps are proteins that use energy to carry substances across the cell membrane against the concentration gradient.
$III.$ In facilitated diffusion,special proteins help hydrophilic substances to be transported across the membrane.
$IV.$ In diffusion,molecules move against the concentration gradient in a random manner.
$V.$ Facilitated diffusion is faster than active transport.

Guttation usually occurs when the plant is put

Match List $I$ with List $II$ :
List $I$List $II$
$A$. Cohesion$I$. More attraction in liquid phase
$B$. Adhesion$II$. Mutual attraction among water molecules
$C$. Surface tension$III$. Water loss in liquid phase
$D$. Guttation$IV$. Attraction towards polar surfaces

Choose the correct answer from the options given below :

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