Mineral Nutrition

Which micronutrient is required for splitting of water molecule during photosynthesis?

1. Molybdenum
2. Magnesium
3. Copper
4. Manganese

Match List I with List II:

1. A-II, B-III, C-IV, D-I
2. A-III, B-I, C-IV, D-II
3. A-II, B-IV, C-I, D-III
4. A-III, B-II, C-I, D-IV

Match List-I with List-II Choose the correct answer from the options given below:

1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
2. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
3. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
4. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

Match the following concerning essential elements and their functions in plants Select the correct option

1. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Which of the following elements is responsible for maintaining turgor in cells?

1. Sodium
2. Calcium
3. Magnesium
4. Potassium

In which of the following forms is iron absorbed by plants?

1. Ferrous
2. Both ferric and ferrous
3. Ferric
4. Free element

In which of the following all three are macronutrients?

1. Molybdenum, magnesium, manganese
2. Nitrogen, phosphorus, sulphur
3. Boron, Zinc, manganese
4. Iron, copper, molybdenum

Which is essential for the growth of root tip?

1. Zn
2. Fe
3. Ca
4. Mn

The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction?

1. Magnesium and Molybdenum
2. Magnesium and Chlorine
3. Manganese and chlorine
4. Manganese and Potassium

Minerals known to be required in large amounts for plant growth include

1. potassium, phosphorus, selenium, boron
2. magnesium, sulphur, iron, zinc
3. phosphorus, potassium, sulphur, calcium
4. calcium, magnesium, manganese, copper.

Which of the following elements is a constituent of biotin?

1. Magnesium
2. Calcium
3. Phosphorus
4. Sulphur

Which one of the following is wrong statement?

1. Anabaena and Nostoc are capable of fixing nitrogen in free-living state also.
2. Root nodule forming nitrogen fixers live as aerobes under free-living conditions.
3. Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins.
4. Nitrosomonas and Nitrobacter are chemo-autotrophs.

Best defined function of manganese in green plants is

1. photolysis of water
2. Calvin cycle
3. nitrogen fixation
4. water absorption

Which one of the following is essential for photolysis of water?

1. Copper
2. Manganese
3. Boron
4. Zinc

Which one of the following is not an essential mineral element for plants while the remaining three are?

1. Iron
2. Manganese
3. Cadmium
4. Phosphorus

An element playing important role in nitrogen fixation is

1. molybdenum
2. copper
3. manganese
4. zinc

Which one of the following is not a micronutrient?

1. Molybdenum
2. Magnesium
3. Zinc
4. Boron

Manganese is required in

1. plant cell wall formation
2. photolysis of water during photosynthesis
3. chlorophyll synthesis
4. nucleic acid synthesis

Which one of the following elements is not an essential micronutrient for plant growth?

1. Zn
2. Cu
3. Ca
4. Mn

A plant requires magnesium for

1. protein synthesis
2. chlorophyll synthesis
3. cell wall development
4. holding cells together

Sulphur is an important nutrient for optimum growth and productivity in

1. oilseed crops
2. pulse crops
3. cereals
4. fibre crops.

The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?

1. Co, Ni, Mo
2. Ca, K, Na
3. Mn, Co, Ca
4. Cu, Mn, Fe

Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone

1. auxin
2. cytokinin
3. ethylene
4. abscisic acid.

Boron in green plants assists in

1. activation of enzymes
2. acting as enzyme co-factor
3. photosynthesis
4. sugar transport

Mg is a component of

1. chlorophyll
2. cytochrome
3. haemoglobin
4. haemocyanin

Plants take zinc in the form of

1. ZnSO4
2. Zn2+
3. ZnO
4. Zn