Micronutrients

Question 48
The below figure shows the two crop fields [Plots A and B] have been treated by manures and chemical fertilizers respectively, keeping other environmental factors same. Observe the graph and answer the following questions.

(i) Why does plot B show sudden increase and then gradual decrease in yield?
(ii) Why is the highest peak in plot A graph slightly delayed?
(iii) What is the reason for the different pattern of the two graphs?

The nutrients required by a plant in very small quantities are called___.

1. manures

2. micronutrients

3. fertilizers

4. macronutrients

1. X- Water, Y- Copper, Z- Rock
2. X- Soil, Y- Carbon, Z- Air
3. X- Air, Y- Hydrogen, Z- Soil
4. X- Rock, Y- Hydrogen , Z- Water

1. Calcium, Boron, Zinc
2. Iron, Copper, Manganese
3. Phosphorus, Sulphur, Calcium
4. Copper, Iron, Sulphur

Name any two micronutrients, required by plants.

Which of the following is not a macro nutrient?

1. Nitrogen

2. Potassium

3. Manganese

4. Calcium

1. potassium
2. sodium
3. manganese

Which of the following are micronutrients? You may choose more than one option.

1. Nitrogen

2. Zinc

3. Phosphorous

4. Potassium

Name the disease caused by Vitamin C deficiency. What are the sources of this Vitamin ? [ 2 MARKS ]

The nutrients which are required by the plants in very small quantities are called ___.

Which of these is a macronutrient in plants?

1. Chlorine

2. Zinc

3. Nitrogen

4. Copper

State whether iron is a micronutrient with respect to plants

1. Manganese
2. Potasssium
3. Boron
4. Zinc
5. Sulphur

1. Calcium, Boron, Zinc
2. Iron, Copper, Manganese
3. Phosphorus, Sulphur, Calcium
4. Copper, Iron, Sulphur

1. X- Soil, Y- Carbon, Z- Air
2. X- Air, Y- Hydrogen, Z- Soil
3. X- Water, Y- Copper, Z- Rock
4. X- Rock, Y- Hydrogen , Z- Water

Name a few macronutrients required by plants.

1. Vitamin D-Riboflavin
   
2. Vitamin B - Calciferol
   
3. Vitamin A - Thiamine
4. Vitamin E - Tocopherol
   

Fill in the blanks.​

The nutrients that are required in large quantities by the plants are known as

The nutrients required by a plant in very small quantities are called___.

1. macronutrients

2. micronutrients

3. manure

4. fertilizers

1. Nitrogen
2. Phosphorus
3. Iron

1. Ca
2. Mo
3. Zn
4. Na

Which of the following is a micronutrient?

1. Zinc

2. Calcium

3. Magnesium

4. Potassium

The nutrients which are required by the plants in very small quantities are called

Distinguish between micronutrients and macronutrien ts. Give suitable examples.

_______ transports food bidirectionally in a plant.

1. Stem
2. Phloem

3. Xylem

4. Leaf

1. (i), (ii) and (iii)
2. (ii), (iii) and (iv)
3. (i), and (iv)
4. (i), (iv) and (v)

1. Contains high dry matter
2. Is free from disease and pest
3. Has nutrient without toxicity
4. All of the above

The nutrients which are required by the plants in very small quantities are called ___.

1. micronutrients
2. minerals
3. macronutrients
4. chemicals