Class 11 Biology MCQs Mineral Nutrition for NEET

Here, you will get Class 11 Biology MCQ of Chapter 12 Mineral Nutrition for cracking NEET/AIIMS. By solving these MCQs of Class 11 Biology Chapter 12 Mineral Nutrition, you will get the confidence to crack NEET. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams. 

Mineral Nutrition Class 11 MCQs Questions with Answers

Function of zinc is
(a) Closing of stomata
(b) Biosynthesis of 3-IAA
(c) Synthesis of chlorophyll
(d) Oxidation of carbohydrate

Answer: (c) Synthesis of chlorophyll

The process of conversion of NO2 to N2 is called
(a) nitrification
(b) ammonification
(c) denitrification
(d) nitrogen fixation

Answer: (c) denitrification

Manganese toxicity leads to deficiency of
(a) iron
(b) calcium
(c) magnesium
(d) all of the above

Answer: (d) all of the above

The nitrogen exists as two nitrogen atoms joined by
(a) Di covalent bonds
(b) tetra covalent bonds
(c) triple covalent bonds
(d) monocovalent bond

Answer: (c) triple covalent bonds

The enzyme involved in biological nitrogen fixation are
(a) Carboxylase
(b) Oxygenase
(c) Dehydrogenase
(d) Nitrogenase

Answer: (d) Nitrogenase

Analysis of xylem sap shows
(a) presence of enzymes
(b) presence of organic matter
(c) presence of nutrients
(d) presence of mineral salts

Answer: (d) presence of mineral salts

Name the scientist who first showed that plants obtain minerals from the soil for their growth and development.
(a) Woodward
(b) de-Saussure
(c) Armon
(d) Stout

Answer: (a) Woodward

Which of the following is a group of micronutrients?
(a) Ca, Zn, B
(b) Fe, Mn, Cu
(c) Cl, C, Ca
(d) Ni, Mo, H

Answer: (b) Fe, Mn, Cu

Which is essential for root hair growth?
(a) Zn
(b) Mo
(c) Ca
(d) S

Answer: (c) Ca

That element which helps in electron transport in the process of photosynthesis
(a) Zinc
(b) Chlorine
(c) Manganese
(d) Boron

Answer: (c) Manganese

Function of laghaemoglobin during biological nitrogen fixation in root nodules of legumes is to
(a) Protect nitrogenase from Oxygen
(b) Transport Oxygen for nitrogenase activity
(c) Convert ammonium into nitrite
(d) Convert N2 to NH2

Answer: (a) Protect nitrogenase from Oxygen

Those essential element which occur in 1-10 mg/g of dry matter are
(a) Macronutrients
(b) Micronutrients
(c) Toxic elements
(d) Beneficial nutrients

Answer: (a) Macronutrients

Deficiency of which of the following can cause yellowing of intravenous regions of leaves?
(a) Potassium
(b) Calcium
(c) Phosphorus
(d) Copper

Answer: (a) Potassium

Chlorosis will occur if a plant is grown in
(a) dark
(b) shade
(c) strong light
(d) Fe – free medium

Answer: (d) Fe – free medium

Oxygen scavangers present in root nodules of legumes is
(a) haemoglobin
(b) leg haemoglobin
(c) cyano haemoglobin
(d) none of these

Answer: (b) leg haemoglobin

Insectivorous plants grow where
(a) There is carbohydrate deficient soil
(b) There is nitrogen deficient soil
(c) Vitamin c is required
(d) Hormones are required

Answer: (b) There is nitrogen deficient soil

Toxicity of which element leads to the appearance of brown spots on leaves
(a) Mg
(b) Mn
(c) Fe
(d) Cu

Answer: (b) Mn

In cabbages, ‘Whiptail’ is a characteristic deficiency disease. It is caused by the deficiency of
(a) Chlorine
(b) Molybdenum
(c) Magnesium
(d) Boron

Answer: (b) Molybdenum

Phosphorous is a constituent of
A. Cell membrane
B. Nucleic acids
C. Cell wall
D. Chlorophyll

(a) C and D
(b) A and B
(c) B and C
(d) D and A

Answer: (b) A and B

The middle lamella mainly contains
(a) Na
(b) Mg
(c) K
(d) Ca

Answer: (d) Ca

Which one of the following microbes forms a symbiotic association with plants and helps them in their nutrition?
(a) Aspergillus
(b) Trichoderma
(c) Glomus
(d) Azotobacter

Answer: (c) Glomus

Nitrogenase enzyme converts
(a) Nitrate and nitrite into nitrogen
(b) Atmospheric nitrogen into ammonia
(c) Ammonia into nitrate and nitrite
(d) Nitrate into nitrite

Answer: (b) Atmospheric nitrogen into ammonia

Choose the odd one out among the following
(a) Pseudomonas
(b) Rhizobium
(c) Azotobacter
(d) Bacillus anabaena

Answer: (a) Pseudomonas

Which element is required for opening and closing of stomata?
(a) P
(b) K
(c) Ca
(d) Na

Answer: (b) K

NPK denotes
(a) Nitrogen, Protein, Kinetin
(b) Nitrogen, Protein, Potassium
(c) Nitrogen, Potassium, kinetin
(d) Nitrogen, Phosphorus, Potassium

Answer: (d) Nitrogen, Phosphorus, Potassium

In plant, nitrate is reduced to ammonia state in two steps. In second step electrons are donated by
(a) Nitrite reductase
(b) Cytochrome b5
(c) Ferredoxin
(d) Nitrate reductase

Answer: (c) Ferredoxin

Exanthema is due to deficiency of
(a) B
(b) Mo
(c) Mn
(d) Cu

Answer: (d) Cu

Which one of the following is a wrong statement?
(a) Greenhouse effect is a natural Phenomenon
(b) Eutrophication is a natural phenomenon in freshwater bodies
(c) Most of the forests have been lost in tropical areas
(d) Ozone in upper part of atmosphere is harmful to animals

Answer: (d) Ozone in upper part of atmosphere is harmful to animals

Influx and efflux of H+ ions inside the cell change the
(a) Na+ ion concentration
(b) Nitrate concentration
(c) pH
(d) Permeability of plasma membrane

Answer: (c) pH

Which among the following is NOT the source of nitrogen?
(a) Automobile exhaust
(b) Xylem
(c) Industrial combustion
(d) Forest fire

Answer: (b) Xylem

It is the technique of growing plants in above-ground strands provided with fine mist of normal solution.
(a) Chemoponics
(b) Hydroponics
(c) Hygroponics
(d) Aeroponics

Answer: (d) Aeroponics

Non-mineral elements of plants are
(a) Carbon, hydrogen and sulphur
(b) Carbon, oxygen and nitrogen
(c) Sulphar, chlorine and nitrogen
(d) Carbon, hydrogen and oxygen

Answer: (d) Carbon, hydrogen and oxygen

Presence of phosphorus
(a) brings about healthy root growth
(b) promotes fruit ripening
(c) retards protein formation
(d) none

Answer: (c) retards protein formation

Which one of the following mineral elements plays an in biological nitrogen fixation?
(a) Copper
(b) Manganese
(c) Zinc
(d) Molybdenum

Answer: (d) Molybdenum

Denitrification is carried out by
(a) Nitrosomonas
(b) Pseudomonas
(c) Nitrobacter
(d) Nitrococcus

Answer: (b) Pseudomonas

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