Deficiency of Nutrients

Q.

Deficiency of which of these elements cause necrosis in plants?

1. Magnesium

2. Calcium

3. Copper

4. Potassium

Q.

Match the following deficiency symptoms with relevant essential elements:

Column - I Column - II

A. Chlorosis 1. N, S, Mo

B. Necrosis 2. N, K, S, Mo

C. Inhibition of cell division 3. Ca, Mg, Cu,

D. Delay of flowering 4. N, K, Mg, S, Fe, Mn, Zn, Mo

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

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

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

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

Q. Ginger is modified root growing underground. It has nodes and internodes.

1. False
2. True

Q.

The leaves turn and become yellow due to deficiency of:

1. Na

2. K

3. Ca

4. Fe

Q. Why do hilly people suffer from simple goitre?

Q.

Deficiency of copper in plants causes which of the following symptoms?

1. Ca

2. N

3. B

4. S

Q.

The element involved in chlorosis of leaves is

1. N, S, K

2. N, S, P

3. N, S, Mn

4. N, S, Mo

Q.

Which of the following nutrient elements cannot undergo remobilization in plants?

1. Nitrogen

2. Potassium

3. Calcium

4. Magnesium

Q.

Deficiency of copper alone in plants causes which of the following conditions?

1. Heart Rot

2. Dieback

3. Mouse Ear

4. Whiptail

Q.

Deficiency symptoms caused due to the deficiency of Mg and K are:

1. Chlorosis

2. Necrosis

3. Both A and B

4. Inhibition of cell division

Q.

Deficiency of the micronutrient zinc leads to

1. Early senescence

2. Slow growth

3. Underdeveloped roots

4. Underdeveloped shoots

Q.

You observe that a plant’s younger leaves, not the older ones, are yellowing. You recall that the cause of plant sickness can be diagnosed by leaves which are yellowing. What is the most likely cause of your plant’s blight?

1. Lack of nitrogen-fixing Rhizobium bacteria.

2. A deficiency in a mobile mineral nutrient.

3. A deficiency in a non-mobile mineral nutrient.

4. Too much shade.

Q.

Assertion (A): The deficiency symptoms of N, P and Mg are visible first in senescent leaves.
Reason (R): Elements like N, P and Mg are mobile.

1. Both A and R are true and R explains A

2. Both A and R are false

3. Both A and R are true and R does not explain A

4. A is true and R is false

Q.

Deficiency of one nutrient can cause many symptoms in a plant.

1. True
2. False

Q. Ascent of sap in plants takes place through ________.

1. epidermis
2. cortex
3. xylem
4. phloem