NEET QUIZ 29 JULY

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Mineral Nutrition - 3 Practice Tests

Test1

Q1. How many essential elements are required for plant growth?

A. 17
B. 16
C. 20
D. 18

Q2. Hydroponics is mainly used for?

A. Commercial vegetable production
B. Seed storage
C. Animal farming
D. Fish farming

Q3. Which is NOT a criterion of essentiality?

A. Specific requirement
B. Normal growth
C. Replaceable by another element
D. Direct role in metabolism

Q4. Deficiency of immobile elements appears first in?

A. Young tissues
B. Old leaves
C. Roots
D. Flowers

Q5. Nitrite is oxidized to nitrate by?

A. Nitrobacter
B. Nitrosomonas
C. Rhizobium
D. Azotobacter

Q6. Potassium helps maintain?

A. Turgor
B. Photosynthesis
C. Respiration
D. Flower colour

Q7. Nitrogenase requires?

A. High energy input
B. Low oxygen
C. Sunlight
D. High salt

Q8. Best defined function of Mn?

A. Water splitting
B. Protein synthesis
C. Sugar transport
D. Seed germination

Q9. Most abundant element in dry matter?

A. Carbon
B. Nitrogen
C. Iron
D. Manganese

Q10. Passive mineral absorption depends on?

A. Temperature
B. Metabolic inhibitors
C. Humidity
D. Light

Test2

Q1. Mycorrhiza is associated with?

A. Fungi and roots
B. Bacteria and stems
C. Algae and roots
D. Virus and leaves

Q2. Micronutrient among these?

A. Zinc
B. Nitrogen
C. Potassium
D. Calcium

Q3. Iron deficiency causes?

A. Chlorosis
B. Root rot
C. Wilting
D. Flowering

Q4. Chlorophyll molecule contains?

A. Magnesium
B. Iron
C. Copper
D. Zinc

Q5. Rhizobium is associated with?

A. Legumes
B. Rice
C. Wheat
D. Maize

Q6. Frankia forms symbiosis with?

A. Alnus
B. Pea
C. Gram
D. Soybean

Q7. Nitrification converts?

A. Ammonia to nitrate
B. Nitrate to ammonia
C. Protein to amino acid
D. Sugar to starch

Q8. Denitrification reduces?

A. Nitrate to nitrogen
B. Nitrogen to nitrate
C. Nitrite to ammonia
D. Protein to nitrate

Q9. Critical concentration refers to?

A. Minimum concentration for growth
B. Maximum toxicity
C. Soil pH
D. Water content

Q10. Macro element?

A. Calcium
B. Copper
C. Zinc
D. Molybdenum

Test3

Q1. Plants absorb molybdenum as?

A. Molybdate ion
B. Mo metal
C. Oxide
D. Sulphate

Q2. Nitrogen deficiency symptom?

A. Yellowing of older leaves
B. Blue flowers
C. Red roots
D. Large fruits

Q3. Sulphur deficiency first appears in?

A. Young leaves
B. Old leaves
C. Roots
D. Seeds

Q4. Calcium deficiency affects?

A. Growing points
B. Old leaves
C. Seeds
D. Fruit only

Q5. Which bacteria fix free nitrogen?

A. Azotobacter
B. Nitrobacter
C. Nitrosomonas
D. Pseudomonas

Q6. Redox mineral?

A. Iron
B. Calcium
C. Potassium
D. Magnesium

Q7. Photosynthetic oxygen evolution needs?

A. Mn and Cl
B. Fe and Cu
C. Zn and B
D. Ca and Mg

Q8. Hydroponics is useful in?

A. Infertile soils
B. Deep oceans
C. Snow
D. Deserts only

Q9. Nitrogen is absorbed mainly as?

A. Nitrate and ammonium
B. Protein
C. Nitrogen gas
D. Urea only

Q10. Essentiality criteria proposed by?

A. Arnon and Stout
B. Darwin
C. Mendel
D. Linnaeus

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