12th Grade > Biology
MINERAL NUTRITION MCQs
Total Questions : 64
| Page 3 of 7 pages
Answer: Option C. -> Lead
:
C
Iron is a micronutrient required by plants. Calcium and magnesium are macronutrients required by plants. Both macro and micronutrients are essential for healthy growth of the plant. Leadis not required by plants for their normal healthy growth.
:
C
Iron is a micronutrient required by plants. Calcium and magnesium are macronutrients required by plants. Both macro and micronutrients are essential for healthy growth of the plant. Leadis not required by plants for their normal healthy growth.
Question 22. Match the element with its associated functions/roles and choose the correct option among given below
Column−IColumn−IIA.Boroni. Splitting of H2O to liberate O2 during photosynthesisB. Manganeseii. Needed for synthesis of auxinsC.Molybdenumiii. Component of nitrogenaseD.Zinciv. Pollen germinationE.Ironv. Component of ferredoxin
Column−IColumn−IIA.Boroni. Splitting of H2O to liberate O2 during photosynthesisB. Manganeseii. Needed for synthesis of auxinsC.Molybdenumiii. Component of nitrogenaseD.Zinciv. Pollen germinationE.Ironv. Component of ferredoxin
Answer: Option B. -> A - iv, B - i, C - iii, D - ii, E - v
:
B
Boron -Pollen germination
Manganese -splitting of H2O to liberate O2 during photosynthesis
Molybdenum - component of nitrogenase
Zinc -needed for synthesis of auxins
Iron -component of ferredoxin
:
B
Boron -Pollen germination
Manganese -splitting of H2O to liberate O2 during photosynthesis
Molybdenum - component of nitrogenase
Zinc -needed for synthesis of auxins
Iron -component of ferredoxin
Answer: Option D. -> Cell walls
:
D
Calcium pectate is an important component of the middle lamella layer of the plant cell wall. It helps in cementing adjacent cells together. It also regulates the opening of stomata in plants.
:
D
Calcium pectate is an important component of the middle lamella layer of the plant cell wall. It helps in cementing adjacent cells together. It also regulates the opening of stomata in plants.
Answer: Option A. -> Phosphorus
:
A
The element phosphorus is important as a component of ADP and ATP. It forms the phosphate part of the adenosine diphosphate (ATP) and adenosine triphosphate (ADP).
:
A
The element phosphorus is important as a component of ADP and ATP. It forms the phosphate part of the adenosine diphosphate (ATP) and adenosine triphosphate (ADP).
Answer: Option D. -> NO−3 → NO−2 → NO → NO2
:
D
Nitrate present in the soil is anaerobically reduced to nitrogen by a process called denitrification. It is the final step of the cycle where atmospheric nitrogen utilised for the cycle is recycled back to the atmosphere itself.
:
D
Nitrate present in the soil is anaerobically reduced to nitrogen by a process called denitrification. It is the final step of the cycle where atmospheric nitrogen utilised for the cycle is recycled back to the atmosphere itself.
Answer: Option A. -> True
:
A
Symptoms caused by the deficiency of a particular element may be caused due to deficiency of several essential elements. For example, chlorosis is the inhibition of cell division and delay of flowering. It can be caused due to the deficiency of iron, magnesium or zinc.
:
A
Symptoms caused by the deficiency of a particular element may be caused due to deficiency of several essential elements. For example, chlorosis is the inhibition of cell division and delay of flowering. It can be caused due to the deficiency of iron, magnesium or zinc.
Answer: Option D. -> Fe
:
D
Chlorosis is the inhibition of cell division and delay of flowering. It can be caused due to the deficiency of iron, magnesium or zinc. The deficiency of these elements leads to a decrease in chlorophyll, which leads to loss of green colour or chlorotic patches on the leaves.
:
D
Chlorosis is the inhibition of cell division and delay of flowering. It can be caused due to the deficiency of iron, magnesium or zinc. The deficiency of these elements leads to a decrease in chlorophyll, which leads to loss of green colour or chlorotic patches on the leaves.
Answer: Option D. -> All of the above
:
D
The preservation of topsoil is important becauseit contains the minerals necessary for plant growth,it holds water and it contains organisms that break down organic debris andmost roots are located in the topsoil.
:
D
The preservation of topsoil is important becauseit contains the minerals necessary for plant growth,it holds water and it contains organisms that break down organic debris andmost roots are located in the topsoil.
Answer: Option A. -> Chlorine
:
A
Chlorine is involvedin osmosis. It is also involved in maintaining the ionic balance that is necessary for plants to take up mineral elements during photosynthesis.
:
A
Chlorine is involvedin osmosis. It is also involved in maintaining the ionic balance that is necessary for plants to take up mineral elements during photosynthesis.
Answer: Option C. -> Manganese
:
C
Manganese is a micronutrient.
:
C
Manganese is a micronutrient.
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