Mineral Nutrition Quiz | Mineral Nutrition Objective Type Questions with Answers

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Questions
21 Which of the following class of enzyme does not need manganese for its efficient activity?
A Dehydrogenase
B Decarboxylases
C Kinases
D Nitrogenase

Answer: Decarboxylases
22 Deficiency of which mineral causes dark green coloration of the leaves?
A Phosphorus
B Potassium
C Nitrogen
D Calcium

Answer: Phosphorus
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23 Which of the following element is needed by plants in a very small quantity?
A Phosphorus
B Carbon
C Sodium
D Magnesium

Answer: Sodium
24 Name the mineral element which is required by a plant in a great amount?
A Calcium
B Cobalt
C Phosphorus
D Nitrogen

Answer: Nitrogen
25 Name the technique which involves the growth of a plant by suspending their roots in the air?
A Diffusion
B Osmosis
C Hydroponics
D Aeroponics

Answer: Aeroponics
26 Which one of the following is NOT a criteria for an element to be called as essential?
A These elements need not to take part in growth and development
B The function of an element must not be replaceable
C The element should be involved in plant metabolism
D A plant cannot complete its life cycle without these elements

Answer: These elements need not to take part in growth and development
27 Most of the plants obtain nitrogen from the soil in the form of
A Free nitrogen gas
B Nitric acid
C Nitrites
D Nitrates

Answer: Nitrates
28 Which one is an inorganic nutrient
A Cellulose
B Vitamin
C Calcium
D Protein

Answer: Calcium
29 Which one of the following essential elements can land plants normally obtain directly from the air
A Hydrogen
B Carbon
C Nitrogen
D Phosphorus

Answer: Carbon
30 Which of the following is a micronutrient
A Mg
B Zn
C Ca
D P

Answer: Zn
31 Which of the following elements is not required by plant for their healthy normal growth
A Calcium
B Magnesium
C Lead
D Iron

Answer: Lead
32 Which of following is not an essential micronutrient
A Boron
B Nickel
C Manganese
D Molybdenum

Answer: Nickel
33 Plants absorb mineral salts from the soil solution through
A Semipermeable membrane into the cytoplasm
B Perforation at the apex of root-hairs only
C The cell wall which is semipermeable
D None of the above

Answer: Semipermeable membrane into the cytoplasm
34 Minerals absorbed by roots move to the leaf through
A Xylem
B Phloem
C Sieve tubes
D None of the above

Answer: Xylem
35 The raw material most used by the plants is
A O2
B CO2
C N2
D K

Answer: CO2
36 A fertilizer has a formula of three figures 15-9-9. They stand for percentage of
A N, Ca and Mg
B Mg, P and K
C Ca, N and Fe
D N, P and K

Answer: N, P and K
37 Whiptail of crucifers is due to deficiency of
A Mo
B Cu
C Zn
D P

Answer: Mo
38 Little leaf/leaf rosetting is deficiency symptom of
A Zn
B Mn
C Fe
D B

Answer: Zn
39 Aeroponics is growing plants in
A Air
B Satellites
C Other planets and space
D Stands with liquid spray of their roots

Answer: Stands with liquid spray of their roots
40 major function of phosphorus is in the formation of
A Cell membranes
B Cell wall
C Enzymes
D Carbohydrates

Answer: Cell membranes

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