-
question_answer1)
Carbon become available to crop plants in the form of [CPMT 1972, 81]
A)
Amino acids done
clear
B)
Carbonates done
clear
C)
Carbon dioxide done
clear
D)
Element carbon done
clear
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question_answer2)
Which element forms part of structure of chlorophyll molecule [CPMT 1979, 81, 90; MP PMT 1995; CBSE PMT 2003]
A)
Fe done
clear
B)
Mg done
clear
C)
K done
clear
D)
Mn done
clear
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question_answer3)
Death of stem and root tips occur due to deficiency of [MP PMT 1988; DPMT 2004]
A)
Phosphorus done
clear
B)
Calcium done
clear
C)
Nitrogen done
clear
D)
Carbon done
clear
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question_answer4)
Sinigrin pungent principle of mustard is due to [BHU 1989]
A)
Alkyloids containing cyanide radicle done
clear
B)
Glycoside containing sulphur done
clear
C)
Glycoside containing amino group done
clear
D)
Tannins containing nitrogen done
clear
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question_answer5)
Plants requiring two metallic compounds (minerals) for chlorophyll synthesis, are [MP PMT 1989, 90; AIIMS 1980, 86; CPMT 1977, 94; BHU 1979]
A)
Fe and Ca done
clear
B)
Fe and Mg done
clear
C)
Cu and Ca done
clear
D)
Ca and K done
clear
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question_answer6)
Which of the following is essential mineral element and is not a constituent of any enzyme but stimulate the activity of many enzymes [CBSE PMT 1989; BHU 1994]
A)
Zn done
clear
B)
Mg done
clear
C)
Mn done
clear
D)
K done
clear
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question_answer7)
In plants a common symptom caused by deficiency of P, K, Ca and Mg is the [AIIMS 1980, 84; BHU 1985]
A)
Bending of leaf tip done
clear
B)
Formation of anthocyanin done
clear
C)
Poor development of vasculature done
clear
D)
Appearance of dead necrotic areas done
clear
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question_answer8)
Chlorosis occurs when plants are grown in [MP PMT 1984, 87; CPMT 1981, 84; DPMT 1984]
A)
Dark done
clear
B)
Shade done
clear
C)
Strong light done
clear
D)
Fe free medium or (due to lack of iron or magnesium) done
clear
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question_answer9)
Which of the following amino acids contain sulphur
A)
Asparagin done
clear
B)
Serine done
clear
C)
Proline done
clear
D)
Methionine done
clear
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question_answer10)
The possible resource of phosphorus ions and nitrogen ions in soil generally get depleted because they are usually found as [CBSE PMT 1989, 94]
A)
Positively charged ions done
clear
B)
Negatively charged ions done
clear
C)
A disproportionate mixture of negatively charged ions done
clear
D)
Particles carrying no charge done
clear
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question_answer11)
Which of the following does NPK denote [MP PMT 1990]
A)
Nitrogen, potassium, kinetin done
clear
B)
Nitrogen, protein, kinetin done
clear
C)
Nitrogen, protein, potassium done
clear
D)
Nitrogen, phosphorus, potassium done
clear
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question_answer12)
In nature, organic compounds invariably contain [MP PMT 1996]
A)
Carbon done
clear
B)
Phosphorus done
clear
C)
Sulphur done
clear
D)
Magnesium done
clear
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question_answer13)
With reference to soil critical element means
A)
Nitrogen and phosphorus done
clear
B)
Nitrogen and potassium done
clear
C)
Potassium and chlorine done
clear
D)
Nitrogen, phosphorus and potassium done
clear
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question_answer14)
Which of the element is not essential for plant growth
A)
Nitrogen done
clear
B)
Sulphur done
clear
C)
Sodium done
clear
D)
Potassium done
clear
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question_answer15)
In guard cells, presence of potassium is essential for
A)
Maintaining osmotic pressure done
clear
B)
In controlling cell division done
clear
C)
In enzymatic reactions done
clear
D)
All the above done
clear
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question_answer16)
Green plants use the sulphur in the form of
A)
Pure form done
clear
B)
As sulphates done
clear
C)
As sulphite done
clear
D)
All the above done
clear
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question_answer17)
By the use of sulphur
A)
Development of root is normal done
clear
B)
Root development is reduced done
clear
C)
Root development is increased done
clear
D)
Root dry done
clear
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question_answer18)
In darkness the stomata close because
A)
Potassium deposits in the guard cells done
clear
B)
Guard cells loose potassium done
clear
C)
Starch is converted into sugar done
clear
D)
None of these done
clear
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question_answer19)
Which of the following is a component of middle lamella
A)
Zinc done
clear
B)
Boron done
clear
C)
Calcium done
clear
D)
Phosphorus done
clear
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question_answer20)
Calcium can effect
A)
Permeability of plasma membrane done
clear
B)
Hydration of colloids done
clear
C)
Translocation of carbohydrates and amino acids done
clear
D)
Development of root done
clear
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question_answer21)
Which of the following is not absorbed through soil
A)
Carbon done
clear
B)
Nitrogen done
clear
C)
Potassium done
clear
D)
All the above done
clear
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question_answer22)
In maize grains the percentage of sulphur is
A)
93 done
clear
B)
68 done
clear
C)
59 done
clear
D)
26 done
clear
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question_answer23)
In plants sulphur is found as
A)
Fast moving done
clear
B)
Moving done
clear
C)
About non-moving done
clear
D)
None of the above done
clear
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question_answer24)
Cabbage plant absorbs phosphorus from
A)
Dry soil done
clear
B)
Water irrigated soil done
clear
C)
From phosphate rocks done
clear
D)
None of these done
clear
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question_answer25)
Plants absorb phosphates as
A)
Soluble phosphate done
clear
B)
All phosphates done
clear
C)
Phosphoric acid done
clear
D)
As element done
clear
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question_answer26)
Which of the following is required for binding protein with nucleic acid
A)
Nickel done
clear
B)
Iron done
clear
C)
Cobalt done
clear
D)
Calcium done
clear
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question_answer27)
Deficiency of which of the following element cause weakening of pedicel and petiole
A)
Magnesium done
clear
B)
Zinc done
clear
C)
Nitrogen done
clear
D)
Calcium done
clear
View Solution play_arrow
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question_answer28)
Magnesium is mainly present in the form of
A)
Citrate done
clear
B)
Bicarbonate done
clear
C)
Carbonate done
clear
D)
Phosphate done
clear
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question_answer29)
Phosphorus works as carrier of
A)
Cobalt done
clear
B)
Zinc done
clear
C)
Magnesium done
clear
D)
Copper done
clear
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question_answer30)
Yellowing of tea leaf takes place by the deficiency of
A)
Chlorine done
clear
B)
Potassium done
clear
C)
Oxygen done
clear
D)
Sulphur done
clear
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question_answer31)
Which of the following is considered to be the elements between macro-nutrients and micro-nutrients
A)
Iron done
clear
B)
Nitrogen done
clear
C)
Phosphorus done
clear
D)
Manganese done
clear
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question_answer32)
The cause of special flavour in onion and garlic is due to the presence of
A)
Sulphur done
clear
B)
Phosphorus done
clear
C)
Potassium done
clear
D)
Nitrogen done
clear
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question_answer33)
Potassium is useful in development of
A)
Fibre done
clear
B)
Pith done
clear
C)
Parenchyma done
clear
D)
None of these done
clear
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question_answer34)
Which one is inorganic nutrient [DPMT 1986]
A)
Protein done
clear
B)
Calcium done
clear
C)
Cellulose done
clear
D)
Vitamin done
clear
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question_answer35)
Frame work elements in plants are [CPMT 1985]
A)
Magnesium, copper and iron done
clear
B)
Copper, carbon and oxygen done
clear
C)
Manganese, calcium and nitrogen done
clear
D)
Carbon, hydrogen and oxygen done
clear
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question_answer36)
Absence of\[M{{g}^{++}}\]ions from plants tissue results in [CPMT 1991]
A)
Plasmolysis done
clear
B)
Hydrolysis done
clear
C)
Chlorosis done
clear
D)
Necrosis done
clear
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question_answer37)
Which of the following is not a macro-nutrient [CPMT 1994]
A)
Mn done
clear
B)
Ca done
clear
C)
Mg done
clear
D)
Phosphorus done
clear
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question_answer38)
Presence of phosphorus in a plant [CPMT 1991]
A)
Brings about healthy root growth done
clear
B)
Promotes fruit ripening done
clear
C)
Retards protein formation done
clear
D)
None of the above done
clear
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question_answer39)
Essential macroelements are [MP PMT 1993]
A)
Absorbed from soil done
clear
B)
Manufactured during photosynthesis done
clear
C)
Produced by enzymes done
clear
D)
Produced by growth hormones done
clear
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question_answer40)
The major role of phosphorus in plant metabolism is [DPMT 1986; MP PMT 1994]
A)
To generate metabolic energy done
clear
B)
To evolve oxygen during photosynthesis done
clear
C)
To evolve carbon dioxide during respiration done
clear
D)
To create anaerobic conditions done
clear
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question_answer41)
Phosphorus is a structural element in [Pb. PMT 1999]
A)
Fat done
clear
B)
Starch done
clear
C)
Nucleotide done
clear
D)
Carbohydrate done
clear
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question_answer42)
The chlorophyll is not formed without
A)
Potassium done
clear
B)
Magnesium done
clear
C)
Calcium done
clear
D)
Phosphorus done
clear
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question_answer43)
The mineral constituent of the cell wall is
A)
Iron done
clear
B)
Magnesium done
clear
C)
Potassium done
clear
D)
Calcium done
clear
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question_answer44)
Mg and Fe are required by the plants for the
A)
Energy transfer concerned with photosynthesis done
clear
B)
Synthesis of chlorophyll pigments in leaves done
clear
C)
Mechanism of stomatal opening and closing done
clear
D)
Translocation of carbohydrates from the leaf to the stem done
clear
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question_answer45)
Premature leaf fall is caused due to the deficiency of
A)
Molybdenum done
clear
B)
Sulphur done
clear
C)
Sodium done
clear
D)
Phosphorus done
clear
View Solution play_arrow
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question_answer46)
Calcium gets accumulated in
A)
Differentiating tissues done
clear
B)
Older leaves done
clear
C)
Buds done
clear
D)
Young tissues done
clear
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question_answer47)
In calcium deficient plants, meristematic regions of the stem and root tips are greatly affected and chlorosis of the margins of young leaves takes place. These symptoms eventually lead to the death of leaf, stem and root apices. These observations are related to the role of calcium in plant growth as it is
A)
A constituent element of chlorophyll done
clear
B)
Required for the formation of the middle lamella done
clear
C)
Involved in the synthesis of chloroplast proteins done
clear
D)
Involved in the hydration and permeability of cells done
clear
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question_answer48)
Which of the following is a macro nutrient [CPMT 1994]
A)
Ca and Mg done
clear
B)
Mo done
clear
C)
Mn done
clear
D)
Zn done
clear
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question_answer49)
Most common free ion in a cell is
A)
P done
clear
B)
K done
clear
C)
Fe done
clear
D)
B done
clear
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question_answer50)
Rapid deterioration of root and shoot tip occurs due to the deficiency of [MP PMT 1988]
A)
Calcium done
clear
B)
Phosphorus done
clear
C)
Nitrogen done
clear
D)
Carbon done
clear
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question_answer51)
Interveinal chlorosis of leaves is caused by the deficiency of [Kashmir MEE 1995]
A)
Nitrogen done
clear
B)
Calcium done
clear
C)
Potassium done
clear
D)
Magnesium done
clear
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question_answer52)
The constant pH of body fluid is maintained by buffer salts like [CPMT 1989]
A)
Potassium phosphates done
clear
B)
Sodium phosphates done
clear
C)
Adenosine monophosphate done
clear
D)
Sodium and potassium phosphates done
clear
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question_answer53)
Which of the following is not macro-nutrient [CPMT 1996]
A)
C done
clear
B)
P done
clear
C)
S done
clear
D)
Zn done
clear
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question_answer54)
If chlorophyll is burnt, what element will be left [CPMT 1986, 87, 95]
A)
Fe done
clear
B)
Na done
clear
C)
Mg done
clear
D)
Mn done
clear
View Solution play_arrow
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question_answer55)
Which one is not related with plant ash [MP PMT 1997]
A)
Trace elements done
clear
B)
Essential elements done
clear
C)
Nitrogen done
clear
D)
Mineral elements done
clear
View Solution play_arrow
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question_answer56)
Which of the following is not an essential macro-element for the growth of plants [CPMT 1999]
A)
N done
clear
B)
Zn done
clear
C)
Ca done
clear
D)
K done
clear
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question_answer57)
Which of the following element is used up in phosphorylation [AFMC 2000]
A)
Calcium and sulphur done
clear
B)
Chlorine and maganese done
clear
C)
Iron and phosphorous done
clear
D)
Magnesium and phosphate done
clear
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question_answer58)
Those fertilizers, which provide all the essential elements such as \[N,\,P\] and \[K\] etc. required for plant growth, are called [BHU 2001]
A)
Direct fertilizers done
clear
B)
Indirect fertilizers done
clear
C)
Complete fertilizers done
clear
D)
Incomplete fertilizers done
clear
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question_answer59)
The major portion of the dry weight of plants comprises of [CBSE PMT 2003]
A)
Carbon, hydrogen and oxygen done
clear
B)
Nitrogen, Phosphorus and potassium done
clear
C)
Calcium, magnesium and sulphur done
clear
D)
Carbon, nitrogen and hydrogen done
clear
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question_answer60)
The most abundent element present in the plants is [CBSE PMT 2004]
A)
Manganese done
clear
B)
Iron done
clear
C)
Carbon done
clear
D)
Nitrogen done
clear
View Solution play_arrow
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question_answer61)
The appearance of yellow edges to leaves is due to deficiency of this mineral element [Kerala PMT 2004]
A)
Calcium done
clear
B)
Magnesium done
clear
C)
Potassium done
clear
D)
Sulphur done
clear
E)
Molybdenum done
clear
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question_answer62)
Which is essential for root hair growth [BHU 2005]
A)
Zn done
clear
B)
Ca done
clear
C)
Mo done
clear
D)
S done
clear
View Solution play_arrow