Which of the following elements causes necrosis due to its deficiency?

N, K and S

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N, K, Mg and Fe

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Mn, Zn and Mo

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Ca, Mg, Cu and K

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Solution

The correct option is D
Ca, Mg, Cu and K

Deficiency of calcium leads to stunted growth, chlorosis, necrosis,and curling.
Deficiency of magnesium leads to interveinalchlorosis which turns necrotic.
Deficiency of potassium leads to chlorosis, followed by necrosis.
Deficiency of copper leads to marginal necrosis.
Ca, Mg, Cu and K

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Q. 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

Match the following deficiency symptoms with relevant essential elements:

$\begin{matrix} Column - I & Column - II A . Chlorosis & 1. N, S, Mo B . Necrosis & 2. N, K, S, Mo C . Inhibition of cell division & 3. Ca, Mg, Cu D . Delay of flowering & 4. N, K, Mg, S, Fe, Mn, Zn, Mo \end{matrix}$

Q. C,H,O,N,S,B,K,P,Ca,Mg,Fe,Mn,Cu,Zn,Mo,Cl,Ni- are these elements essential for plant growth?

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

Q. Which of the following are common symptoms developed due to deficiency of Ca, Mg, K and Mo?

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