Which of the following water is available to plants?
Options
(a) hygroscopic water (b) capillary water (c) both hygroscopic water & capillary water (d) gravitational water
Correct Answer:
capillary water
Explanation:
After gravitational […]
Which of the following plant material is an efficient water imbibant
Options
(a) lignin (b) pectin (c) agar (d) cellulose
Correct Answer:
agar
Explanation:
Adsorption of water by a substance (solids-colloids) is known […]
Which of the following is used as an antitranspirant?
Options
(a) Cobalt chloride (b) Napthol acetic acid (c) Calcium carbonate (d) Phenyl mercuric acetate
Correct Answer:
Phenyl mercuric acetate
Explanation:
The substances which […]
Which of the following is not true for active transport?
Options
(a) It is a chemical process (b) Energy is required for this process which is obtained in the form of ATP (c) […]
Which of the following is not a function of zone of cell differentiation in roots?
Options
(a) Mineral uptake (b) Water uptake (c) CO₂ uptake (d) O₂ uptake
Correct Answer:
CO₂ uptake
Explanation: […]
Which of the following is most important factor in regulation of transpiration?
Options
(a) humidity (b) light (c) temperature (d) all of these
Correct Answer:
all of these
Explanation:
A number of external […]
Which of the following has maximum water potential?
Options
(a) pure water (b) 2% sucrose solution (c) 4% glucose solution (d) 10% sodium chloride solution
Correct Answer:
pure water
Explanation:
Water potential of […]
Which of the following elements is responsible for maintaining turgor in cells?
Options
(a) Calcium (b) Potassium (c) Sodium (d) Magnesium
Correct Answer:
Potassium
Explanation:
Potassium helps in maintaining turgidity of cells.
Which of the following are a group of micronutrients for plants?
Options
(a) Fe,Mn,Cu,Mo,Zn (b) Fe,Mn,Cu,O,C (c) Cu,B,Cl,Fe,Ca (d) Ca,Mg,Fe
Correct Answer:
Fe,Mn,Cu,Mo,Zn
Explanation:
No explanation available. Be the first to write the […]
Which is not the function of transpiration?
Options
(a) cool leaf surface (b) Maintains shape and structure of plant (c) Help in translocation of sugars from source to sink (d) provide water for […]
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