Movement of H₂O through cell wall is called
Options
(a) apoplast (b) symplast (c) tonoplast (d) none of these
Correct Answer:
apoplast
Explanation:
No explanation available. Be the first to write the explanation […]
Opening and closing of stomata are under the control of
Options
(a) K⁺ (b) P (c) Mg (d) None of these
Correct Answer:
K⁺
Explanation:
No explanation available. Be the first to write […]
Mottled chlorosis on the leaves occur due to the deficiency of
Options
(a) nitrogen (b) phosphorus (c) potassium (d) sulplur
Correct Answer:
potassium
Explanation:
No explanation available. Be the first to write the […]
In nodulous plant leghaemoglobin helps in
Options
(a) nitrates (b) magnesium (c) sulphur (d) iron
Correct Answer:
nitrates
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
A cell may increase in volume if the external medium is
Options
(a) hypotonic (b) hypertonic (c) isotonic (d) none of these
Correct Answer:
hypotonic
Explanation:
No explanation available. Be the first to […]
The real force responsible for the movement of water from one cell to another cell is mainly through
Options
(a) D.P.D (b) O.P (c) Imbibition (d) T.P
Correct Answer:
D.P.D
Explanation:
No explanation […]
Loss of water from the tips of leaves is called
Options
(a) guttation (b) transpiration (c) respiration (d) bleeding
Correct Answer:
guttation
Explanation:
No explanation available. Be the first to write the explanation […]
The first stable product of fixation of atmospheric nitrogen in leguminous plants is:
Options
(a) Ammonia (b) NO₃⁻ (c) Glutamate (d) NO₂⁻
Correct Answer:
Ammonia
Explanation:
Ammonia is first stable compound produced in fixation […]
Which one of the following elements is not an essential micro-nutrient for plant growth?
Options
(a) Zn (b) Cu (c) Ca (d) Mn
Correct Answer:
Ca
Explanation:
Essential micro elements are Fe, Mn, Zn, […]
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