Question

Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.​

Answer 1

The five main deficiency symptoms arising in plants are:

• Chlorosis

• Necrosis

• Inhibition of cell division

• Delayed flowering

• Stunted plant growth

Chlorosis or loss of chlorophyll leads to the yellowing of leaves. It is caused by the deficiencies of nitrogen, potassium, magnesium, sulphur, iron, manganese, zinc, and molybdenum.

Necrosis is the death of plant tissues as a result of the deficiencies of calcium, magnesium, copper, and potassium.

Inhibition of cell division is caused by the deficiencies of nitrogen, potassium, sulphur, and molybdenum.

Delayed flowering is caused by the deficiencies of nitrogen, sulphur, and molybdenum.

Stunted plant growth is a result of the deficiencies of copper and sulphur.

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Answer 2

Answer:

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==>Five different deficiency symptoms in plants are:

(i)Chlorosis – It is the loss of chlorophyll leading to yellowing of leaves. This is caused due to the deficiency of N, K, Mg, S and Fe etc.

(ii)Necrosis – Killing or death of tissue particularly leaf is called necrosis. This is caused due to the deficiency of Ca, Mg, Cu and K etc.

(iii)Whiptail – Degeneration of lamina but not of petiole and midrib , caused by deficiency of molybdenum.

(iv)Die back – It is the killing of shoot apex i.e. stem tip and young leaves. This is caused due to the deficiency of K and Cu.

(v)Little leaf disease – Small sized leaves, caused by zinc deficiency.