QUESTION based on NCERT textbook.
Q1) In which of the following forms is iron absorbed by plants ? [NEET 2018]
a) Ferric
b) Ferrous
c) Free element
d) Both ferric and ferrous
Q2) Which is essential for the growth of root tip ? …[NEET 2016]
a) Ca
b) Mn
c) Zn
d) Fe
Q3) Which one of the following statements can best explain the term critical concentration of an essential element?
A) Molybdenum B) Chlorine
C) Zinc D) Boron
Q5)Deficiency symptoms of an element tend to appear first in young leaves. It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?
A) Sulphur
B) Nitrogen
C) Phosphorus
D) Calcium
Q7) Which one of the following symptoms is riot due to manganese toxicity inplants?
A) Calcium and sulphur
B) Chlorine and maganese
C) Iron and phosphorous
D) Magnesium and phosphate
Q9) With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true?
A) N
B) Zn
C) Ca
D) K
11) Which one of the following roles is not characteristic of an essential element?
A) Zn
B) Mg
C) Mn
D) K
13) The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction? [ ReAIPMT 2015]
a) Magnesium and Chlorine
b) Manganese and Chlorine
c) Manganese and Potassium
d) Magnesium and Molybdenum
14) The first stable product of fixation of atmospheric nitrogen in leguminous plants is …[NEET 2013]
a) NO2-
b) Ammonia
c) NO3-
d) Glutamate
15) Minerals known to be required in large amounts for plant growth include: …[AIPMT 2015]
a) magnesium, sulphur, iron, zinc
b) phosphorus, potassium, sulphur, calcium
c) calcium, magnesium, manganese, copper
d) potassium, phosphorus, selenium, boron
16) Deficiency symptoms of nitrogen and potassium are visible first in : …[AIPMT 2014]
a) Roots
b) Buds
c) Senescent leaves
d) Young leaves
17) Copper is activator of enzyme ... .... [ CBSE 2004]
a) Carbonic anhydrase
b) Tryptophase
c) lactic dehydrogenase
d) Tyrosinase
18) Mineral present in cytochrome is ... .... [ AMU 2001]
a) Fe
b) Cu
c) Mg
d) Mn
19) Most of the plants obtain nitrogen from the soil in the form of ... ... [ AFMC 2010]
a) Free nitrogen gas
b) Nitric acid
c) Nitrites
d) Nitrates
20) The ion controlling stomatal movement is ... ....[ JKCMEE 2007]
a) Na+
b) Ca2+
c) Mg2+
d) K+
21) Leghaemoglobin is formed for ... ... [ AIIMS 2012]
a) Respiration
b) Photosynthesis
c) Nitrogen fixation
d) Fatty acid synthesis
22) Which is a free living nitrogen fixing bacterium .... ... [ MPPMT 2012]
a) Pseudomonas
b) Azotobacter
c) Nitrosomonas
d) Rhizobium
23)Which one helps in absorption of phosphorus from soil by plants ... .... [ CBSE 2011]
a) Frankia
b) Anabaena
c) Glomus
d) Rhizobium
24) What is required for nitrogen fixation by Rhizobium .... ... [ MHTCET 2011]
a) CO2
b) O2
c) Heterocyst
d) Potassium
25) All the nitrogenase enzyme has been inactivated by radiation. there will be no .... .... [ CBSE 2004]
a) Fixation of atmospheric nitrogen
b) Fixation of nitrogen by legumes
c) Conversion of nitrate to nitrite in legumes
d) Conversion of ammonia to nitrate in soil
Answers are below:-
1) A
2) A
3) A
4) C
5) A
6) A
7) B
8) D
9) A
10) C
11) B
12) D
13) B
14) B
15) B
16) C
17) D
18) A
19) D
20) D
21) C
22) B
23) C
24) B
25) B
Q1) In which of the following forms is iron absorbed by plants ? [NEET 2018]
a) Ferric
b) Ferrous
c) Free element
d) Both ferric and ferrous
Q2) Which is essential for the growth of root tip ? …[NEET 2016]
a) Ca
b) Mn
c) Zn
d) Fe
Q3) Which one of the following statements can best explain the term critical concentration of an essential element?
(A) Essential element concentration below which plant growth is retarded
(B) Essential element concentration below which plant growth becomes enhanced
(C) Essential element concentration below which plant remains in the vegetative phase
(D) None of the above.
Q4) Which of the following trace element is essential for auxin synthesis in plants [CBSE PMT 2003]A) Molybdenum B) Chlorine
C) Zinc D) Boron
Q5)Deficiency symptoms of an element tend to appear first in young leaves. It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?
(A) Sulphur
(B) Magnesium
(C) Nitrogen
(D) Potassium
Q6) Which of the following deficiency may cause leaf tip bending [BVP 2003]A) Sulphur
B) Nitrogen
C) Phosphorus
D) Calcium
Q7) Which one of the following symptoms is riot due to manganese toxicity inplants?
(A) Calcium translocation in shoot apex is inhibited
(B) Deficiency in both Iron and Nitrogen is induced
(C) Appearance of brown spot surrounded by chlorotic veins
(D) None of the above.
Q8) Which of the following element is used up in phosphorylation [AFMC 2000]A) Calcium and sulphur
B) Chlorine and maganese
C) Iron and phosphorous
D) Magnesium and phosphate
Q9) With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement/ statements does not hold true?
(A) Nitrogenase may require oxygen to its functioning
(B) Nitrogenase is Mo-Fe protein
(C) Leg-hemoglobin is a pink coloured pigment
(D) Nitrogenase helps to convert N2 gas into two molecules of ammonia.
10) Which of the following is not an essential macro-element for the growth of plants [CPMT 1999]A) N
B) Zn
C) Ca
D) K
11) Which one of the following roles is not characteristic of an essential element?
(A) Being a component of biomolecules
(B) Changing the chemistry of soil
(C) Being a structural component of energy related chemical compounds
(D) Activation or inhibition of enzymes
12) Which of the following is essential mineral element and is not a constituent of any enzyme but stimulate the activity of many enzymes [CBSE PMT 1989; BHU 1994]A) Zn
B) Mg
C) Mn
D) K
13) The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction? [ ReAIPMT 2015]
a) Magnesium and Chlorine
b) Manganese and Chlorine
c) Manganese and Potassium
d) Magnesium and Molybdenum
14) The first stable product of fixation of atmospheric nitrogen in leguminous plants is …[NEET 2013]
a) NO2-
b) Ammonia
c) NO3-
d) Glutamate
15) Minerals known to be required in large amounts for plant growth include: …[AIPMT 2015]
a) magnesium, sulphur, iron, zinc
b) phosphorus, potassium, sulphur, calcium
c) calcium, magnesium, manganese, copper
d) potassium, phosphorus, selenium, boron
16) Deficiency symptoms of nitrogen and potassium are visible first in : …[AIPMT 2014]
a) Roots
b) Buds
c) Senescent leaves
d) Young leaves
17) Copper is activator of enzyme ... .... [ CBSE 2004]
a) Carbonic anhydrase
b) Tryptophase
c) lactic dehydrogenase
d) Tyrosinase
18) Mineral present in cytochrome is ... .... [ AMU 2001]
a) Fe
b) Cu
c) Mg
d) Mn
19) Most of the plants obtain nitrogen from the soil in the form of ... ... [ AFMC 2010]
a) Free nitrogen gas
b) Nitric acid
c) Nitrites
d) Nitrates
20) The ion controlling stomatal movement is ... ....[ JKCMEE 2007]
a) Na+
b) Ca2+
c) Mg2+
d) K+
21) Leghaemoglobin is formed for ... ... [ AIIMS 2012]
a) Respiration
b) Photosynthesis
c) Nitrogen fixation
d) Fatty acid synthesis
22) Which is a free living nitrogen fixing bacterium .... ... [ MPPMT 2012]
a) Pseudomonas
b) Azotobacter
c) Nitrosomonas
d) Rhizobium
23)Which one helps in absorption of phosphorus from soil by plants ... .... [ CBSE 2011]
a) Frankia
b) Anabaena
c) Glomus
d) Rhizobium
24) What is required for nitrogen fixation by Rhizobium .... ... [ MHTCET 2011]
a) CO2
b) O2
c) Heterocyst
d) Potassium
25) All the nitrogenase enzyme has been inactivated by radiation. there will be no .... .... [ CBSE 2004]
a) Fixation of atmospheric nitrogen
b) Fixation of nitrogen by legumes
c) Conversion of nitrate to nitrite in legumes
d) Conversion of ammonia to nitrate in soil
Answers are below:-
1) A
2) A
3) A
4) C
5) A
6) A
7) B
8) D
9) A
10) C
11) B
12) D
13) B
14) B
15) B
16) C
17) D
18) A
19) D
20) D
21) C
22) B
23) C
24) B
25) B
Keep learning the concepts and solving the MCQ. The more you solve more will chances of success in NEET.
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