Role of Micronutrients

Q.

An element playing important role in nitrogen fixation is:

1. Molybdenum

2. Copper

3. Manganese

4. Zinc

Q. Match the element with its associated functions/roles and choose the correct option among given below
$\begin{array}{cc}Column-I& Column-II\\ \text{A.Boron}& \text{i. Splitting of}{H}_{2}O\text{to liberate}{O}_2\text{during photosynthesis}\\ \text{B. Manganese}& \text{ii. Needed for synthesis of auxins}\\ \text{C.Molybdenum}& \text{iii. Component of nitrogenase}\\ \text{D.Zinc}& \text{iv. Pollen germination}\\ \text{E.Iron}& \text{v. Component of ferredoxin}\end{array}$

1. A - i, B - ii, C - iii, D - iv, E- v

2. A - iv, B - i, C - iii, D - ii, E - v

3. A - iii, B - ii, C - iv, D - v, E - i

4. A - ii, B - iii, C - v, D - i, E - iv

Q. The two minerals required for splitting of water

1. are essential macronutrients
2. are needed in amounts more than 10 m mole/kg of dry matter
3. are micronutrients
4. are beneficial elements

Q. Water splitting reaction occurs during______(1)______and leads to the evolution of ____(2)______

1. respiration (1), carbon dioxide (2)
2. photosynthesis (1), oxygen (2)
3. respiration (1), oxygen (2)
4. photosynthesis (1), carbon dioxide (2)

Q. The metal present in alcohol dehydrogenase enzyme is also present in

1. carbonic anyhdrase
2. nitrate reductase
3. cytochrome oxidase
4. hexokinase

Q. __________ element is needed for the synthesis of auxins.

1. Zinc
2. Molybdenum
3. Copper
4. Potassium

Q. Activation of catalase enzyme, formation of chlorophyll, electron transfer are all associated with which of the following elements?

1. Zinc
2. Magnesium
3. Sulphur
4. Iron

Q.

Which one is the cofactor of carbonic anhydrase?

1. $\mathrm{Cu}$

2. $\mathrm{Fe}$

3. $\mathrm{Mg}$

4. $\mathrm{Zn}$

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

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

Q. Which among the following is a function of Boron?

1. Carbohydrate translocation
2. Pollen germination
3. Membrane functioning
4. All of these

Q. Match the following and choose the correct combination from the options given:
$\begin{array}{cc}List-I& List-II\\ \text{a. Photolysis of water}& \text{1. Zinc}\\ \text{b. Diazotrophy}& \text{2. Copper}\\ \text{c. Cytochrome c oxidase}& 3.\text{Manganese}\\ \text{d. Biosynthesis of IAA}& \text{4. Molybdenum}\\ & 5.Boron\end{array}$

1. a – 3, b – 2, c – 1, d – 5

2. a – 3, b – 4, c – 2, d – 1

3. a – 5, b – 2, c – 3, d – 4

4. a – 4, b – 1, c – 3, d – 2

Q.

Mention any 2 roles of boron in cells?

Q. Which of the following micronutrient is involved in synthesis of auxin?

1. Fe
2. Zn
3. Mo
4. Ni

Q.

_________ is important in osmosis and ionic balance.

1. Chlorine

2. Boron

3. Iron

4. Copper

Q. Match the following and choose the correct combination from the options given:
$\begin{array}{cc}List-I& List-II\\ \text{a. Photolysis of water}& \text{1. Zinc}\\ \text{b. Diazotrophy}& \text{2. Copper}\\ \text{c. Cytochrome c oxidase}& 3.\text{Manganese}\\ \text{d. Biosynthesis of IAA}& \text{4. Molybdenum}\\ & 5.Boron\end{array}$

1. a – 3, b – 2, c – 1, d – 5

2. a – 3, b – 4, c – 2, d – 1

3. a – 5, b – 2, c – 3, d – 4

4. a – 4, b – 1, c – 3, d – 2

Q. The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthesis and electron transport in mitochondria. Among the list given below, which group of three elements affect both photosynthesis and electron transport in mitochondria?

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

Q.

The minerals associated with redox reactions are:

1. Iron and copper

2. Iron and phosphorus

3. Copper and zinc

4. Copper and chlorine

Q. ___________is required for the uptake of calcium

1. Boron
2. Potassium
3. Manganese
4. No mineral element

Q.

Match the following:

$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ A.\text{Manganese}& 1.\text{Vitamin A production}\\ B.\text{Copper}& 2.\text{Role in Nitrogen fixation}\\ C.\text{Boron}& 3.\text{Photolysis of water}\\ D.\text{Molybdenum}& 4.\text{Acts as antifungal}\\ & 5.\text{Required for pollen germination}\end{array}$

1. A - 3, B - 1, C - 5, D - 4

2. A - 2, B - 1, C - 5, D - 3

3. A - 3, B - 1, C - 5, D - 2

4. A - 3, B - 1, C - 2, D - 5

Q.

$Z{n}^{2+}$ is an activator of

1. Phosphoenolpyruvate carboxylase

2. Alcohol dehydrogenase

3. Oxygenase

4. Nitrogenase

Q.

The micronutrient involved in nitrogen fixation is:

1. Boron

2. Copper

3. Molybdenum

4. Iron

Q.

A plant shows the following symptoms: stunted growth, chlorosis and smaller leaves. This may be due to the deficiency of a micronutrient, possibly:

1. Sulphur

2. Iron

3. Boron

4. Zinc

Q.

Elements that are required by plants forchlorophyll synthesis are

1. Iron

2. Calcium

3. Magnesium

4. Potassium

Q. Match the element with its associated functions/roles and choose the correct option among given below
$\begin{array}{cc}Column-I& Column-II\\ \text{A.Boron}& \text{i. Splitting of}{H}_{2}O\text{to liberate}{O}_2\text{during photosynthesis}\\ \text{B. Manganese}& \text{ii. Needed for synthesis of auxins}\\ \text{C.Molybdenum}& \text{iii. Component of nitrogenase}\\ \text{D.Zinc}& \text{iv. Pollen germination}\\ \text{E.Iron}& \text{v. Component of ferredoxin}\end{array}$

1. A - i, B - ii, C - iii, D - iv, E- v

2. A - iv, B - i, C - iii, D - ii, E - v

3. A - iii, B - ii, C - iv, D - v, E - i

4. A - ii, B - iii, C - v, D - i, E - iv

Q.

Select the correctly matched pair.

1. Zinc - Helps to maintain ribosome structure

2. Magnesium - Needed during the formation of mitotic spindle

3. Calcium - Plays a role in the opening and closing of stomata

4. Manganese - Needed in the splitting of water to liberate oxygen during photosynthesis

Q.

The micronutrient involved in nitrogen fixation is:

1. Boron

2. Copper

3. Molybdenum

4. Iron

Q.

Best defined function of manganese in green plants is:

1. Nitrogen fixation

2. Water absorption

3. Photolysis of water

4. Calvin cycle