Q.4:- Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.
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.