Micronutrients and Macronutrients Test

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Micronutrients and Macronutrients Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Choose the correct statement from the given options :

A
Plant absorb excess quantity of water

B
Plants take in small quantity of mineral salts through soil water

C
Water and inorganic salt are taken in simultaneously by root hairs

D
Plant absorb only one thing at a time water or inorganic salts

Solution

A variety of mineral elements is present in the soil but all of them are not essential for plant growth. Plants take in small quantity of mineral salts through soil water for their growth.
Question 2
1 / -0

About 98 per cent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen

A
phosphorus and sulphur

B
sulphur and magnesium

C
magnesium and sodium

D
calcium and phosphorus
Solution
About 98 per cent of the mass of every living organism including bacterium and human beings is composed of just six elements, ie, carbon (C), hydrogen (H), nitrogen (N), oxygen (O), phosphorus (P) and sulphur (S).
- Phosphorus is a constituent of energy carriers(ATP) phospholipids kf membrane DNA and RNA etc.
- Sulphur present in amino acids cystiene and methionine
Question 3
1 / -0

Which one of the following is not a micronutrient?

A
Molybdenum

B
Magnesium

C
Zinc

D
Boron

Solution

The essential elements, which are required by plants in comparatively large amounts are called as macronutrients eg, C, H, O, N, P, K, Ca, S, Mg, Fe.

The essential elements, which are required in very small amount by the plants are called micronutrients, eg, Zn, Mn, B, Cu, Mo and Cl.
Question 4
1 / -0

Element present in middle lamella is

A
zinc

B
copper

C
calcium

D
potassium

Solution

Element present in middle lamella is Ca in the form of calcium pectate. It provides mechanical support to the cell wall.
Question 5
1 / -0

Assertion: Manganese plays a vital role in photosynthesis.

Reason: Manganese takes part in the water splitting reaction, thus releasing oxygen.

Read the assertion and reason carefully to mark the correct option out of the options given below:

A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B
If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C
If the assertion is true but the reason is false

D
If the assertion is false but reason is true

Solution

Magnesium is absorbed by plants in the form of divalent magnesium. It activates several enzymes involved in the process of photosynthesis and respiration.It also play a major role in splitting of water to liberate oxygen, during photosynthesis
Question 6
1 / -0

Role of molybdenum is

A
Nitrogen fixation

B
Carbon assimilation

C
Flowering induction

D
Chromosome contraction

Solution

Mutant strains of nitrogen-fixing bacteria have been obtained with defects in their ability to synthesize an active molybdenum cofactor. Ammonia in the medium represses the synthesis of the molybdenum cofactor. Molybdenum is transported by an energy-requiring reaction, and the metal becomes part of a molybdenum storage compound. Molybdenum in the medium affects the regulation of nitrogenase synthesis.
Question 7
1 / -0

Raphides are needle‑like crystals made up of

A
Calcium carbonate

B
Calcium sulphate

C
Calcium oxalate

D
Calcium pectate

Solution

Calcium oxalate occurs in bundles (rounded masses) or singly in certain plant cells.
Question 8
1 / -0

You are setting up some to grow flowers in your apartment and discover that you bought sand rather than potting soil. You decide to go ahead and plant the flowers in the sand to save yourself a trip back to the store. Much to your dismay all of your plants die. How can you explain this failure?

A
Sand does not pack tightly enough around the roots to hold the plant upright so they fall over and die

B
Sand does not hold enough water to sustain plant metabolism so all of the plants die from dessication

C
Sand does not contain enough nutrient material to sustain plant growth, so the plants die from starvation

D
Sand is too abrasive and damages to roots as they grow through it, so the plant die

Solution

Sand does not contain enough nutrient material to sustain plant growth, so the plants die from starvation.

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Re-Attempt Weekly Quiz Competition

Micronutrients and Macronutrients Test - 1

Result

Micronutrients and Macronutrients Test - 1

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SHARING IS CARING

Question 1

Plant absorb excess quantity of water

Plants take in small quantity of mineral salts through soil water

Water and inorganic salt are taken in simultaneously by root hairs

Plant absorb only one thing at a time water or inorganic salts

Solution

Question 2

phosphorus and sulphur

sulphur and magnesium

magnesium and sodium

calcium and phosphorus

Solution

Question 3

Molybdenum

Magnesium

Zinc

Boron

Solution

Question 4

zinc

copper

calcium

potassium

Solution

Question 5

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

If the assertion is true but the reason is false

If the assertion is false but reason is true

Solution

Question 6

Nitrogen fixation

Carbon assimilation

Flowering induction

Chromosome contraction

Solution

Question 7

Calcium carbonate

Calcium sulphate

Calcium oxalate

Calcium pectate

Solution

Question 8

Sand does not pack tightly enough around the roots to hold the plant upright so they fall over and die

Sand does not hold enough water to sustain plant metabolism so all of the plants die from dessication

Sand does not contain enough nutrient material to sustain plant growth, so the plants die from starvation

Sand is too abrasive and damages to roots as they grow through it, so the plant die

Solution

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