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Free download in PDF Mineral Nutrition Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Which of the following class of enzyme does not need manganese for its efficient activity?
[A]
Dehydrogenase
[B]
Decarboxylases
[C]
Kinases
[D]
Nitrogenase
(22)
Deficiency of which mineral causes dark green coloration of the leaves?
[A]
Phosphorus
[B]
Potassium
[C]
Nitrogen
[D]
Calcium
(23)
Which of the following element is needed by plants in a very small quantity?
[A]
Phosphorus
[B]
Carbon
[C]
Sodium
[D]
Magnesium
(24)
Name the mineral element which is required by a plant in a great amount?
[A]
Calcium
[B]
Cobalt
[C]
Phosphorus
[D]
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
(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
(28)
Which one is an inorganic nutrient
[A]
Cellulose
[B]
Vitamin
[C]
Calcium
[D]
Protein
(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
(30)
Which of the following is a micronutrient
[A]
Mg
[B]
Zn
[C]
Ca
[D]
P
31
Which of the following elements is not required by plant for their healthy normal growth
[A]
Calcium
[B]
Magnesium
[C]
Lead
[D]
Iron
32
Which of following is not an essential micronutrient
[A]
Boron
[B]
Nickel
[C]
Manganese
[D]
Molybdenum
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
35
The raw material most used by the plants is
[A]
O2
[B]
CO2
[C]
N2
[D]
K
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
37
Whiptail of crucifers is due to deficiency of
[A]
Mo
[B]
Cu
[C]
Zn
[D]
P
38
Little leaf/leaf rosetting is deficiency symptom of
[A]
Zn
[B]
Mn
[C]
Fe
[D]
B
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
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