Samacheer Kalvi Class 11 Bio Botany Mineral Nutrition Questions - 1
Question: 1
Nitrogen is the essential component of
(A) Protein
(B) Carbohydrate
(C) Fatty acids
(D) None of these
Ans: A
Protein
Question: 2
The process of converting atmospheric nitrogen (N2) into ammonia is termed as
(A) Ammonification
(B) Nitrogen fixation
(C) Nitrification
(D) Nitrogen cycle
Ans: B
Nitrogen fixation
Question: 3
Deficiency symptoms of an element tend to appear first in young leaves due to its relative immobility. Which one of the following elemental deficiency would show such symptom
(A) Potassium
(B) Sulphur
(C) Magnesium
(D) Nitrogen
Ans: B
Sulphur
Question: 4
The one doesn't fix Nitrogen is
(A) Spirogyra
(B) Anbaena
(C) Azatobacter
(D) Nostoc
Ans: A
Spirogyra
Question: 5
Leg haemoglobin is a
(A) Hormone fixing in Nitrogen
(B) Pigment present in flower petals
(C) Oxygen scavenger in BaA
(D) Pigment acting as oxygen scavenger in legumes
Ans: D
Pigment acting as oxygen scavenger in legumes
Question: 6
Toxicity of Mn in plant of may cause deficiency
(A) S, P and K
(B) Ca, CI and Mg
(C) N, P and Mn
(D) Fe and Mg
Ans: D
Fe and Mg
Question: 7
Law of minimum was proposed by
(A) Liebig
(B) Wamburg
(C) Van Helmont
(D) Julius von Sachs
Ans: A
Liebig
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