question_answer1) Carbon become available to crop plants in the form of [CPMT 1972, 81]
A) Amino acids
B) Carbonates
C) Carbon dioxide
D) Element carbon
View Answer play_arrowA) Fe
B) Mg
C) K
D) Mn
View Answer play_arrowquestion_answer3) Death of stem and root tips occur due to deficiency of [MP PMT 1988; DPMT 2004]
A) Phosphorus
B) Calcium
C) Nitrogen
D) Carbon
View Answer play_arrowquestion_answer4) Sinigrin pungent principle of mustard is due to [BHU 1989]
A) Alkyloids containing cyanide radicle
B) Glycoside containing sulphur
C) Glycoside containing amino group
D) Tannins containing nitrogen
View Answer play_arrowA) Fe and Ca
B) Fe and Mg
C) Cu and Ca
D) Ca and K
View Answer play_arrowA) Zn
B) Mg
C) Mn
D) K
View Answer play_arrowA) Bending of leaf tip
B) Formation of anthocyanin
C) Poor development of vasculature
D) Appearance of dead necrotic areas
View Answer play_arrowA) Dark
B) Shade
C) Strong light
D) Fe free medium or (due to lack of iron or magnesium)
View Answer play_arrowquestion_answer9) Which of the following amino acids contain sulphur
A) Asparagin
B) Serine
C) Proline
D) Methionine
View Answer play_arrowA) Positively charged ions
B) Negatively charged ions
C) A disproportionate mixture of negatively charged ions
D) Particles carrying no charge
View Answer play_arrowquestion_answer11) Which of the following does NPK denote [MP PMT 1990]
A) Nitrogen, potassium, kinetin
B) Nitrogen, protein, kinetin
C) Nitrogen, protein, potassium
D) Nitrogen, phosphorus, potassium
View Answer play_arrowquestion_answer12) In nature, organic compounds invariably contain [MP PMT 1996]
A) Carbon
B) Phosphorus
C) Sulphur
D) Magnesium
View Answer play_arrowquestion_answer13) With reference to soil critical element means
A) Nitrogen and phosphorus
B) Nitrogen and potassium
C) Potassium and chlorine
D) Nitrogen, phosphorus and potassium
View Answer play_arrowquestion_answer14) Which of the element is not essential for plant growth
A) Nitrogen
B) Sulphur
C) Sodium
D) Potassium
View Answer play_arrowquestion_answer15) In guard cells, presence of potassium is essential for
A) Maintaining osmotic pressure
B) In controlling cell division
C) In enzymatic reactions
D) All the above
View Answer play_arrowquestion_answer16) Green plants use the sulphur in the form of
A) Pure form
B) As sulphates
C) As sulphite
D) All the above
View Answer play_arrowquestion_answer17) By the use of sulphur
A) Development of root is normal
B) Root development is reduced
C) Root development is increased
D) Root dry
View Answer play_arrowquestion_answer18) In darkness the stomata close because
A) Potassium deposits in the guard cells
B) Guard cells loose potassium
C) Starch is converted into sugar
D) None of these
View Answer play_arrowquestion_answer19) Which of the following is a component of middle lamella
A) Zinc
B) Boron
C) Calcium
D) Phosphorus
View Answer play_arrowquestion_answer20) Calcium can effect
A) Permeability of plasma membrane
B) Hydration of colloids
C) Translocation of carbohydrates and amino acids
D) Development of root
View Answer play_arrowquestion_answer21) Which of the following is not absorbed through soil
A) Carbon
B) Nitrogen
C) Potassium
D) All the above
View Answer play_arrowquestion_answer22) In maize grains the percentage of sulphur is
A) 93
B) 68
C) 59
D) 26
View Answer play_arrowquestion_answer23) In plants sulphur is found as
A) Fast moving
B) Moving
C) About non-moving
D) None of the above
View Answer play_arrowquestion_answer24) Cabbage plant absorbs phosphorus from
A) Dry soil
B) Water irrigated soil
C) From phosphate rocks
D) None of these
View Answer play_arrowquestion_answer25) Plants absorb phosphates as
A) Soluble phosphate
B) All phosphates
C) Phosphoric acid
D) As element
View Answer play_arrowquestion_answer26) Which of the following is required for binding protein with nucleic acid
A) Nickel
B) Iron
C) Cobalt
D) Calcium
View Answer play_arrowA) Magnesium
B) Zinc
C) Nitrogen
D) Calcium
View Answer play_arrowquestion_answer28) Magnesium is mainly present in the form of
A) Citrate
B) Bicarbonate
C) Carbonate
D) Phosphate
View Answer play_arrowquestion_answer29) Phosphorus works as carrier of
A) Cobalt
B) Zinc
C) Magnesium
D) Copper
View Answer play_arrowquestion_answer30) Yellowing of tea leaf takes place by the deficiency of
A) Chlorine
B) Potassium
C) Oxygen
D) Sulphur
View Answer play_arrowA) Iron
B) Nitrogen
C) Phosphorus
D) Manganese
View Answer play_arrowquestion_answer32) The cause of special flavour in onion and garlic is due to the presence of
A) Sulphur
B) Phosphorus
C) Potassium
D) Nitrogen
View Answer play_arrowquestion_answer33) Potassium is useful in development of
A) Fibre
B) Pith
C) Parenchyma
D) None of these
View Answer play_arrowquestion_answer34) Which one is inorganic nutrient [DPMT 1986]
A) Protein
B) Calcium
C) Cellulose
D) Vitamin
View Answer play_arrowquestion_answer35) Frame work elements in plants are [CPMT 1985]
A) Magnesium, copper and iron
B) Copper, carbon and oxygen
C) Manganese, calcium and nitrogen
D) Carbon, hydrogen and oxygen
View Answer play_arrowquestion_answer36) Absence of\[M{{g}^{++}}\]ions from plants tissue results in [CPMT 1991]
A) Plasmolysis
B) Hydrolysis
C) Chlorosis
D) Necrosis
View Answer play_arrowquestion_answer37) Which of the following is not a macro-nutrient [CPMT 1994]
A) Mn
B) Ca
C) Mg
D) Phosphorus
View Answer play_arrowquestion_answer38) Presence of phosphorus in a plant [CPMT 1991]
A) Brings about healthy root growth
B) Promotes fruit ripening
C) Retards protein formation
D) None of the above
View Answer play_arrowquestion_answer39) Essential macroelements are [MP PMT 1993]
A) Absorbed from soil
B) Manufactured during photosynthesis
C) Produced by enzymes
D) Produced by growth hormones
View Answer play_arrowquestion_answer40) The major role of phosphorus in plant metabolism is [DPMT 1986; MP PMT 1994]
A) To generate metabolic energy
B) To evolve oxygen during photosynthesis
C) To evolve carbon dioxide during respiration
D) To create anaerobic conditions
View Answer play_arrowquestion_answer41) Phosphorus is a structural element in [Pb. PMT 1999]
A) Fat
B) Starch
C) Nucleotide
D) Carbohydrate
View Answer play_arrowquestion_answer42) The chlorophyll is not formed without
A) Potassium
B) Magnesium
C) Calcium
D) Phosphorus
View Answer play_arrowquestion_answer43) The mineral constituent of the cell wall is
A) Iron
B) Magnesium
C) Potassium
D) Calcium
View Answer play_arrowquestion_answer44) Mg and Fe are required by the plants for the
A) Energy transfer concerned with photosynthesis
B) Synthesis of chlorophyll pigments in leaves
C) Mechanism of stomatal opening and closing
D) Translocation of carbohydrates from the leaf to the stem
View Answer play_arrowquestion_answer45) Premature leaf fall is caused due to the deficiency of
A) Molybdenum
B) Sulphur
C) Sodium
D) Phosphorus
View Answer play_arrowquestion_answer46) Calcium gets accumulated in
A) Differentiating tissues
B) Older leaves
C) Buds
D) Young tissues
View Answer play_arrowA) A constituent element of chlorophyll
B) Required for the formation of the middle lamella
C) Involved in the synthesis of chloroplast proteins
D) Involved in the hydration and permeability of cells
View Answer play_arrowquestion_answer48) Which of the following is a macro nutrient [CPMT 1994]
A) Ca and Mg
B) Mo
C) Mn
D) Zn
View Answer play_arrowquestion_answer49) Most common free ion in a cell is
A) P
B) K
C) Fe
D) B
View Answer play_arrowA) Calcium
B) Phosphorus
C) Nitrogen
D) Carbon
View Answer play_arrowquestion_answer51) Interveinal chlorosis of leaves is caused by the deficiency of [Kashmir MEE 1995]
A) Nitrogen
B) Calcium
C) Potassium
D) Magnesium
View Answer play_arrowquestion_answer52) The constant pH of body fluid is maintained by buffer salts like [CPMT 1989]
A) Potassium phosphates
B) Sodium phosphates
C) Adenosine monophosphate
D) Sodium and potassium phosphates
View Answer play_arrowquestion_answer53) Which of the following is not macro-nutrient [CPMT 1996]
A) C
B) P
C) S
D) Zn
View Answer play_arrowquestion_answer54) If chlorophyll is burnt, what element will be left [CPMT 1986, 87, 95]
A) Fe
B) Na
C) Mg
D) Mn
View Answer play_arrowquestion_answer55) Which one is not related with plant ash [MP PMT 1997]
A) Trace elements
B) Essential elements
C) Nitrogen
D) Mineral elements
View Answer play_arrowA) N
B) Zn
C) Ca
D) K
View Answer play_arrowquestion_answer57) 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
View Answer play_arrowA) Direct fertilizers
B) Indirect fertilizers
C) Complete fertilizers
D) Incomplete fertilizers
View Answer play_arrowquestion_answer59) The major portion of the dry weight of plants comprises of [CBSE PMT 2003]
A) Carbon, hydrogen and oxygen
B) Nitrogen, Phosphorus and potassium
C) Calcium, magnesium and sulphur
D) Carbon, nitrogen and hydrogen
View Answer play_arrowquestion_answer60) The most abundent element present in the plants is [CBSE PMT 2004]
A) Manganese
B) Iron
C) Carbon
D) Nitrogen
View Answer play_arrowA) Calcium
B) Magnesium
C) Potassium
D) Sulphur
E) Molybdenum
View Answer play_arrowquestion_answer62) Which is essential for root hair growth [BHU 2005]
A) Zn
B) Ca
C) Mo
D) S
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