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Question-1
Primitive types of stomata are found in
(A)
Apophysis of capsule
(B)
Leaves of moss plants
(C)
Axes of moss plants
(D)
Submerged hydrophytes
Question-2
The separation of components of a mixture based on their differential movement is called
(A)
Antolysis
(B)
Plasmolysis
(C)
Autoradiography
(D)
Chromatography
Question-3
Opening and closing of stomata is due to the change in
(A)
Gaseous state
(B)
No. of guard cell
(C)
respiratory system
(D)
osmotic concentration of guard cells
Question-4
Which of the following plant has sunken stomata?
(A)
Nerium
(B)
Hydrilla
(C)
Mango
(D)
Guava
Question-5
The cohesive force existing between molecules of water contributes to
(A)
Osmosis
(B)
Translocation
(C)
Plasmolysis
(D)
Ascent of sap
Question-6
Which of the following ion is involved in the opening and closing of stomata?
(A)
Mg2+
(B)
Na+
(C)
Fe2+
(D)
K+
Question-7
Due to plasmolysis, the plant cell
(A)
Bursts
(B)
Swells up
(C)
Becomes turgid
(D)
Becomes flaccid
Question-8
Which of the following elements are essential for the photolysis of water?
(A)
Ca and Cl
(B)
Mn and Cl
(C)
Zn and I
(D)
Cu and Fe
Question-9
When stomata open, the pH of guard cells,
(A)
Increases
(B)
Decreases
(C)
Remain same
(D)
Doubled
Question-10
The internal factor of transpiration is
(A)
Oxygen
(B)
Nitrogen
(C)
Carbondioxide
(D)
Sunken stomata
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Plus 2 Biology Science
ICSE/ISC
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