12th Grade > Biology
MINERAL NUTRITION MCQs
Total Questions : 64
| Page 4 of 7 pages
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Whenever the supply of an essential element becomes limited plant growth is retarded. The concentration below which growth is retarded is termed as critical concentration.
Answer: Option B. -> Reductive amination
:
B
Reductive aminationis a form ofaminationthat involves the conversion of a carbonyl group to an amine via an intermediate imine.
:
B
Reductive aminationis a form ofaminationthat involves the conversion of a carbonyl group to an amine via an intermediate imine.
Answer: Option C. -> Elements essential to plant body
:
C
After a series of trial and error method of adding one particular mineral salt into the growth medium of hydroponics and the immediate observation of plant condition lead to the discovery of essential minerals required by the plant and subsequently their deficiency symptoms in plant were also noticed.
:
C
After a series of trial and error method of adding one particular mineral salt into the growth medium of hydroponics and the immediate observation of plant condition lead to the discovery of essential minerals required by the plant and subsequently their deficiency symptoms in plant were also noticed.
Answer: Option D. -> Cu
:
D
Trace elements arenutrients that are utilized by the plants in small quantities. They arealso called micronutrients. Fe, Mg, Zn, Cu are some examples of trace elements.
:
D
Trace elements arenutrients that are utilized by the plants in small quantities. They arealso called micronutrients. Fe, Mg, Zn, Cu are some examples of trace elements.
Answer: Option C. -> Zinc
:
C
Leaf malformations like little leaf and leaf rosettes are caused due to the deficiency of Zinc.
:
C
Leaf malformations like little leaf and leaf rosettes are caused due to the deficiency of Zinc.
Answer: Option D. -> Nitrogenase
:
D
Nitrogenase enzyme is able to break triple bond present between two nitrogen atoms. This enzyme is present in some prokaryotes.
:
D
Nitrogenase enzyme is able to break triple bond present between two nitrogen atoms. This enzyme is present in some prokaryotes.
Answer: Option D. -> Manganese - Needed in the splitting of water to liberate oxygen during photosynthesis
:
D
The best-defined function of manganese is in the splitting of water to liberate oxygen during photosynthesis. Manganese attaches to the water molecules and splits them through electron transfer, liberating free oxygen into the atmosphere.
:
D
The best-defined function of manganese is in the splitting of water to liberate oxygen during photosynthesis. Manganese attaches to the water molecules and splits them through electron transfer, liberating free oxygen into the atmosphere.
Answer: Option A. -> True
:
A
Calcium is used in synthesis of cell wall as calcium pectate in the middle lamella. It gives strength to the whole plant body in general by depositing in cell walls.
:
A
Calcium is used in synthesis of cell wall as calcium pectate in the middle lamella. It gives strength to the whole plant body in general by depositing in cell walls.
Answer: Option C. -> Carbohydrates, Proteins, Fats
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C
All living organisms derive energy from food. Food contains a number of nutrients like carbohydrates, proteins and fats and these macromolecules which are oxidisable to yield energy are synthesised by plants (autotrophs) and consumed by animals (heterotrophs) .
:
C
All living organisms derive energy from food. Food contains a number of nutrients like carbohydrates, proteins and fats and these macromolecules which are oxidisable to yield energy are synthesised by plants (autotrophs) and consumed by animals (heterotrophs) .
Answer: Option D. -> None of the above
:
D
Manganese competes with iron and magnesium for uptake. With more magnesium available for binding with enzymes, it may induce a deficiency of iron and magnesium.
The iron deficiency causes the appearance of brown spots on the leaves surrounded by chlorotic veins.
Manganese toxicity also inhibits calcium translocation in the shoot apex, which causes calcium deficiency in plants.
:
D
Manganese competes with iron and magnesium for uptake. With more magnesium available for binding with enzymes, it may induce a deficiency of iron and magnesium.
The iron deficiency causes the appearance of brown spots on the leaves surrounded by chlorotic veins.
Manganese toxicity also inhibits calcium translocation in the shoot apex, which causes calcium deficiency in plants.
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