12th Grade > Biology
MINERAL NUTRITION MCQs
Total Questions : 64
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Answer: Option C. -> Glutamic acid
:
C
Glutamic acid is the main amino acid from which the transfer of NH2, the amino group, takes place and other amino acids are forms through transamination.
:
C
Glutamic acid is the main amino acid from which the transfer of NH2, the amino group, takes place and other amino acids are forms through transamination.
Answer: Option C. -> Macronutrients
:
C
Elements such as calcium, potassium, and phosphorus, needed by the plant in fairly large amounts are called macronutrients.
:
C
Elements such as calcium, potassium, and phosphorus, needed by the plant in fairly large amounts are called macronutrients.
Answer: Option A. -> N2+8H++8e−+16ATP→2NH3+H2+16ADP+16Pi
:
A
In biological nitrogen fixation, one molecule of nitrogen requires 8H+,8e−, and 16 ATPs to produce two molecules of ammonia.
:
A
In biological nitrogen fixation, one molecule of nitrogen requires 8H+,8e−, and 16 ATPs to produce two molecules of ammonia.
Answer: Option D. -> Sodium and Iodine
:
D
Sodium and Iodine are not needed by the majority of plants but very much needed by almost all animals. Deficiency of iodine causes the thyroid gland to swell up and cause problems. Sodium is essential in transferring nerve impulses across neurons.
:
D
Sodium and Iodine are not needed by the majority of plants but very much needed by almost all animals. Deficiency of iodine causes the thyroid gland to swell up and cause problems. Sodium is essential in transferring nerve impulses across neurons.
Answer: Option B. -> Potassium
:
B
Potassium plays an important role in the opening and closing of stomata. According to the potassium pump theory, the movement of potassium ions across the cell membranes of the guard cells of the stomata leads to changes in the osmotic pressure of the surrounding cells. This, in turn, changes the turgor pressure of the guard cells causing the closing and opening of the stomata.
:
B
Potassium plays an important role in the opening and closing of stomata. According to the potassium pump theory, the movement of potassium ions across the cell membranes of the guard cells of the stomata leads to changes in the osmotic pressure of the surrounding cells. This, in turn, changes the turgor pressure of the guard cells causing the closing and opening of the stomata.
Answer: Option D. -> Fe
:
D
Ironis involved when aplantproduces chlorophyll, which gives theplantoxygen as well as its healthy green color. This is whyplantswith anirondeficiency, or chlorosis, show a sickly yellow color to their leaves.
:
D
Ironis involved when aplantproduces chlorophyll, which gives theplantoxygen as well as its healthy green color. This is whyplantswith anirondeficiency, or chlorosis, show a sickly yellow color to their leaves.
Answer: Option A. -> True
:
A
Rhizobium is free living aerobic soil bacterium and cannot fix nitrogen independently. When it enters into roots of legumes, it can fix nitrogen by adapting to the anaerobic conditions.
:
A
Rhizobium is free living aerobic soil bacterium and cannot fix nitrogen independently. When it enters into roots of legumes, it can fix nitrogen by adapting to the anaerobic conditions.
Answer: Option B. -> Both A & R true and R does not explain A
:
B
Essential elements which are required in large quantities by the plants are called macronutrients and which are required in small quantities are called micronutrients they are differentiated based on their concentration of requirement and individually depend on their specific role in plants .
:
B
Essential elements which are required in large quantities by the plants are called macronutrients and which are required in small quantities are called micronutrients they are differentiated based on their concentration of requirement and individually depend on their specific role in plants .
Answer: Option D. -> Necrosis - Stunted growth
:
D
Chlorosis is loss of chlorophyll leading to yellowing of leaves. Necrosis is death of tissue particularly leaf tissue.
:
D
Chlorosis is loss of chlorophyll leading to yellowing of leaves. Necrosis is death of tissue particularly leaf tissue.
Answer: Option D. -> Ca
:
D
Calcium is a macronutrient. Molybdenum, copper and iron are micronutrients.
:
D
Calcium is a macronutrient. Molybdenum, copper and iron are micronutrients.
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