Question

Match the columns and choose the correct combination.

	I(Essential Elements)		II(Deficiency Causes)
(a)	N, K, Mg, S, Fe, Mn, Zn and Mo	(i)	Inhibit cell division
(b)	N, K, S and Mo	(ii)	Necrosis
(c)	Ca, Mg, Cu and K	(iii)	Delay in flowering
(d)	N, S and Mo	(iv)	Chlorosis

• A. a - iv, b - iii, c - ii, d - i
• B. a - i, b - ii, c - iii, d - iv
• C. a - iv, b - i, c - ii, d - iii
• D. a - ii, b - iii, c - iv, d - i
• E. a - ii, b - iv, c - ii, d - i

Answer 1

Answer: (C)

a - iv, b - i, c - ii, d - iii

Chlorosis - It is the loss of chlorophyll leading to yellowing in leaves. It is caused by the deficiency of elements N, K, Mg, S, Fe, Mn, Zn and Mo.

Necrosis - It refers to the death of tissue, particularly leaf tissue. It is caused due to the deficiency of Ca, Mg, Cu and K.

Inhibition of cell division - It is caused due to lack or low level of N, K, S and Mo.

Delaying in flowering - It is caused due to a low level of N, S and Mo.

So the correct answer is 'a-iv, b-i, c-ii, d-iii'.