Cytochrome is                          [2001]

1. Metallo flavoproteins

2. Fe containing porphyrin pigment

3. Glycoprotein

4. Lipid 

Consider the following:

I Facilitation of uptake and utilization of calcium by plants
II. Cell elongation and cell differentiation
III. Nitrogen metabolism
IV. Carbohydrate translocation
V. Water splitting reaction in photosynthesis

The functions of Boron in plants will include:

1. I,II, III, IV

2. I, II, IV

3. II, III, IV

4. I, III, V

Which element is required by the plants for uptake and utilization of calcium and carbohydrate translocation ?

1. Manganese
2. Boron
3. Chlorine
4. Selenium

Identify the incorrectly matched pair

    Mineral                     Functions in plants

1. Potassium                 Opening and closing of stomata, Activation of enzymes

2. Magnesium                Maintenance of ribosome structure, Structure of chlorophyll

3. Boron                        Pollen germination, Carbohydrate translocation

4. Molybdenum               Water splitting in photosynthesis, Nitrogen metabolism

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

1. Manganese and chlorine

2. Manganese and potassium

3. Manganese and molybdenum

4. Magnesium and chlorine

The most abundant intracellular cation is

1. Na⁺

2. Ca²⁺

3. H⁺

4. K⁺

Best defined function of manganese in green plants is

1. photolysis of water

2. Calvin cycle

3. nitrogen fixation

4. water absorption

About 98 percent of the mass of every living organism is composed of just six elements

including carbon, hydrogen, nitrogen, oxygen and:

1. phosphorus and sulphur

2. sulphur and magnesium

3. magnesium and sodium

4. calcium and phosphorus

A plant requires magnesium for

1. holding cells together

2. protein synthesis

3. chlorophyll synthesis

4. cell wall development

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

1. Frequent irrigation of the crop

2. Treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer

3. Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5 trichloro phenoxy acetic acid

4. Application of iron and magnesium to promote the synthesis of chlorophyll