In which of the following all three are macronutrients?
Options
(a) Boron,Zinc ,Manganese (b) Iron,Copper ,molybdenum (c) Molybdenum,magnesium,manganese (d) Nitrogen,nickel ,phosphorus
Correct Answer:
Nitrogen,nickel ,phosphorus
Explanation:
None of the options are accurate with […]
In the process of plasmolysis
Options
(a) Endosmosis occurs (b) Exosmosis occurs (c) Imbibition occurs (d) Diffusion occurs
Correct Answer:
Exosmosis occurs
Explanation:
Due to exosmosis, the protoplasm shrinks and leaves the cell […]
In the light of carrier concept, the transport of ion across the membrane is
Options
(a) Passive process (b) Non-osmotic process (c) Osmotic process (d) Active process
Correct Answer:
Active process
Explanation:
In […]
In potato osmometer, which of the following process is involved?
Options
(a) physical process (b) physiological process (c) chemical process (d) physico-chemical process
Correct Answer:
physico-chemical process
Explanation:
In potato osmometer, the potato […]
If turgor pressure becomes equal to the wall pressure, then
Options
(a) water leaves the cell (b) water enters the cell (c) no exchanges of water takes place (d) solute goes from the […]
If the amount of an ion absorbed by a root hair cell at 0⁰ C is 5 gm and at 20⁰C is 20 gm.The amount of this ion absorbed actively should be
Options
Guttation occurs in
Options
(a) Morning (b) Moon (c) Evening (d) Morning 10 0’clock
Correct Answer:
Morning
Explanation:
In guttation drops of liquid come out of the edges of leaves during night […]
Fall of immature leaf is due to the deficiency of
Options
(a) sodium (b) sulphur (c) zinc (d) phosphorus
Correct Answer:
zinc
Explanation:
Zinc plays an important role in the synthesis of tryphtophan […]
Epiphytes are the plants which are dependent on other plants
Options
(a) Only for water (b) For water and food (c) Only for food (d) Only for shelter
Correct Answer:
Only for shelter
Entry of mineral ions in plant root cells by diffusion is
Options
(a) Passive absorption (b) Active absorption (c) Osmosis (d) Endocytosis
Correct Answer:
Passive absorption
Explanation:
This type of absorption is carried […]
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