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ICAR PG Plant Science Exam - English

Duration: 120 ยท Questions: 120 ยท Max Marks: 120 ยท Language: 3

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Plant Science

1
Fat contain
  1. A.3.9 Kcal. of energy per gm
  2. B.9.3 Kcal. of energy per gm
  3. C.9.3 Kcal. of energy per molecule
  4. D.7.3 Kcal. of energy per gm
2
The proteins found only in animal body are
  1. A.Glutelins
  2. B.Albumins
  3. C.Scleroproteins
  4. D.All of the above
3
The sulphur containing amino acids are
  1. A.Lysine
  2. B.Alanine & valine
  3. C.Arginine
  4. D.Cysteine & methionine
4
Zwitter ion contain
  1. A.+ve charge
  2. B.-ve charge
  3. C.Little or no net charge
  4. D.More +ve charge and less -ve charge
5
The water soluble vitamins are
  1. A.Vitamin A and D
  2. B.Vitamin B - complex and Vitamin C
  3. C.Vitamin E and K
  4. D.All of the above
6
Gallic acid is chief components of
  1. A.Condensed tannins
  2. B.Hydrolysable tannins
  3. C.Both (a) and (b)
  4. D.None of the above
7
The flavonoids synthesized in plants are by
  1. A.Mevaloni acid pathway
  2. B.Malonic acid pathway
  3. C.Shikmic acid pathway
  4. D.Both (a) & (b)
8
The correct general formula of the carbohydrate is
  1. A.Cn (H2O)n
  2. B.C2n (H2,O)n
  3. C.Cn (H2,O)2n
  4. D.None of the above
9
Raffinose and gentianose are the example of
  1. A.Disaccharides
  2. B.Trisaccharides
  3. C.Polysaccharides
  4. D.Monosaccharides
10
If the optically active compound rotates the plane polarised light to right side, it is called as.........................and is denote by...............
  1. A.Dextrorotary and is denoted by small italic letter d or + sigh
  2. B.Levorotary and is denoted by small italic letter l or - sigh
  3. C.Both (a) & (b)
  4. D.None of the above
11
If the optically active compound rotates the plane polarised light to left side, it is called as................................and is denote by..................
  1. A.Dextrorotary and is denoted by small italic letter d or + sigh
  2. B.Levorotary and is denoted by small italic letter 1 or - sigh
  3. C.Both (a) & (b)
  4. D.None of the above
12
If the highest numbered asymmetric carbon atom of the sugar molecule contains -OH group on right-hand side in open chain structure, the sugar is known as
  1. A.L-sugar
  2. B.D-sugar
  3. C.Both (a) & (b)
  4. D.None of the above
13
If the highest numbered asymmetric carbon atom of the sugar molecule contains -OH group on left-hand side in open chain structure, the sugar is known as
  1. A.L-sugar
  2. B.D-sugar
  3. C.Both (a) & (b)
  4. D.None of the above
14
Starch, insulin and glycogen are the
  1. A.Oligosaccharide
  2. B.Storage polysaccharide
  3. C.Structural polysaccharide
  4. D.None of the above
15
Which one of the following is not a reducing sugar
  1. A.Glucose
  2. B.Ribose
  3. C.Maltose
  4. D.Sucrose
16
Term protein was first coined by
  1. A.Berzelius in 1838
  2. B.Bloor in 1943
  3. C.W. Kuhne in 1929
  4. D.None of the above
17
The size of protein is depends upon the
  1. A.Nature of solubility
  2. B.No. of amino acids taking part in the synthesis
  3. C.Both (a) & (b)
  4. D.None of the above
18
Which of the following is the smallest protein
  1. A.Insulin
  2. B.Globulin
  3. C.Prolamins
  4. D.None of the above
19
Plant proteins differ from animal proteins in shortage of
  1. A.Nitrogen
  2. B.Oxygen
  3. C.Carbon
  4. D.Sulphur
20
Ricin in castor & Leucosin in cereals are the water soluble ........ protein
  1. A.Globulins
  2. B.Albumins
  3. C.Glutelins
  4. D.Prolamins
21
Which of the following proteins are soluble in 80% alcohol (ethanol) and not soluble in water or salt solutions
  1. A.Prolamins
  2. B.Gliadin in wheat & Zein in maize
  3. C.Both (a) & (b)
  4. D.None of the above
22
Which of the following proteins are not soluble in water but soluble in salt solution
  1. A.Tuberin & legumin
  2. B.Globulins
  3. C.Both (a) & (b)
  4. D.None of the above
23
The protein leucosin is found in
  1. A.Most of the cereals
  2. B.Mustard
  3. C.Spices
  4. D.None of the above
24
Term lipid was coined by
  1. A.Berzelius in 1838
  2. B.Kuhne in 1929
  3. C.German biochemist Bloor (1943)
  4. D.None of the above
25
Lipoprotein is the important gradient of
  1. A.Cell membrane
  2. B.Mitochondria
  3. C.Golgi bodies
  4. D.None of the above
26
Fatty acids are
  1. A.Saturated
  2. B.Unsaturated
  3. C.Either saturated or unsaturated
  4. D.None of the above
27
Majority of the fatty acids are synthesized by...........except linoleic acid, linolenic acid & arachidonic acid
  1. A.Plant cell
  2. B.Human body cell
  3. C.Both (a) & (b)
  4. D.None of the above
28
Lauric acid found in laurel kennel oil having the.......... number of carbon atom in the their chemical formula
  1. A.12
  2. B.16
  3. C.18
  4. D.20
29
Number of carbon atoms in Palmitic acid are
  1. A.12
  2. B.16
  3. C.18
  4. D.20
30
Number of carbon atoms in stearic acid are
  1. A.12
  2. B.16
  3. C.18
  4. D.20
31
Number of carbon atom in arachidic acid are
  1. A.12
  2. B.16
  3. C.18
  4. D.20
32
Which of the following is the source of arachidic acid
  1. A.Peanut oil
  2. B.Cocoa & butter
  3. C.Animal fat & palm oil
  4. D.Laurel kenel oil
33
Which of the following is the source of stearic acid
  1. A.Peanut oil
  2. B.Cocoa & butter
  3. C.Animal fat & palm oil
  4. D.Laurel kenel oil
34
Which of the following is the source of palmitic acid
  1. A.Peanut oil
  2. B.Cocoa & butter
  3. C.Animal fat & palm oil
  4. D.Laurel kennel oil
35
Which of the following is the source of lauric acid
  1. A.Peanut oil
  2. B.Cocoa & butter
  3. C.Animal fat & palm oil
  4. D.Laurel kennel oil
36
Pentose phosphate pathway (PPP) is also known as
  1. A.Warburg-Dickens pathway
  2. B.Direct oxidation pathway
  3. C.Hexose monophosphate shunt
  4. D.All of the above
37
Glycolysis is a
  1. A.Greek word
  2. B.Latin word
  3. C.German world
  4. D.None of the above
38
Pyruvate is a
  1. A.Triose sugar
  2. B.Tetrose sugar
  3. C.Pentose sugar
  4. D.None of the above
39
In the mechanism of glycolysis, the formation of glucose-6-phosphate is also known as
  1. A.Robinson's ester
  2. B.Newberg's ester
  3. C.Harden & Young's ester
  4. D.None of the above
40
In the mechanism of glycolysis, the formation of fructose-6-phosphate is also known as
  1. A.Robinson's ester
  2. B.Newberg's ester
  3. C.Harden & Young's ester
  4. D.None of the above
41
In the mechanism of glycolysis, the formation of fructose 1, 6-bi-phosphate is also known as
  1. A.Robinson's ester
  2. B.Newberg's ester
  3. C.Harden & Young's ester
  4. D.None of the above
42
Which one is not a reducing sugar
  1. A.Glucose
  2. B.Fructose
  3. C.Maltose
  4. D.Sucrose
43
Which one is not an oligosaccharide
  1. A.Insulin
  2. B.Raffinose
  3. C.Lactose
  4. D.Sucrose
44
Which one is a polysaccharide
  1. A.Raffinose
  2. B.Lactose
  3. C.Sucrose
  4. D.Insulin
45
The aldose sugar (glucose) is optically active and
  1. A.Dextrorotatory
  2. B.Laevorotatory
  3. C.Both (a) & (b)
  4. D.None of the above
46
The ketose sugar (Fructose) is optically active and
  1. A.Dextrorotatory
  2. B.Laevorotatory
  3. C.Both (a) & (b)
  4. D.None of the above
47
Which one of the following is mucopolysaccharide
  1. A.Chitin
  2. B.Pectin
  3. C.Lecithin
  4. D.Cellulose
48
The enzyme cellulose synthase are found in which part of the cell
  1. A.Nucleoplasm
  2. B.Cytoplasm
  3. C.Golgi body
  4. D.Plasma membrane
49
In plants callose are found in
  1. A.Sieve tubes of phloem
  2. B.Parenchyma
  3. C.Cambium ring
  4. D.Xylem
50
Water (H2O) is oxide of hydrogen in which the two hydrogen atoms are jointed to oxygen atom by covalent bond forming an angle of
  1. A.103°
  2. B.104°
  3. C.105°
  4. D.106°
51
Water takes part in many biochemical reactions in the cell like
  1. A.Hydrolysis
  2. B.Hydration
  3. C.Dehydration
  4. D.All of the above
52
The Unstable system of solid and liquid phase is called
  1. A.Solution
  2. B.Suspension
  3. C.Colloidal system
  4. D.All of the above
53
The particle size of suspension is ranged from
  1. A.10-3 to 10-5 cm
  2. B.10-5 to 10-7 cm
  3. C.10-7 to 10-8 cm
  4. D.None of the above
54
The particle size of colloidal state is ranged from
  1. A.10-3 to 10-5 cm
  2. B.10-5 to 10-7 cm
  3. C.10-7 to 10-8 cm
  4. D.None of the above
55
The particle size of colloidal state is ranged from
  1. A.10-3 to 10-5 cm
  2. B.10-5 to 10-7 cm
  3. C.10-7 to 10-8 cm
  4. D.None of the above
56
The particles of the dispersed phase in colloidal solutions are called as
  1. A.Colloidal particles
  2. B.Sol particles
  3. C.Micelles
  4. D.All of the above
57
Water loving solution is also called as
  1. A.Lyophilic
  2. B.Hydrophilic
  3. C.Both (a) & (b)
  4. D.Lyophobic
58
Solvent solution is also called as
  1. A.Lyophobic
  2. B.Hydrophobic
  3. C.Both (a) & (b)
  4. D.Lyophilic
59
A colloidal system with fluid like consistency in known as
  1. A.Sol
  2. B.Gel
  3. C.Suspension
  4. D.True solution
60
Which one of the following system is unstable
  1. A.True solution
  2. B.Colloidal system
  3. C.Suspension
  4. D.All of the above
61
The property not shown by the colloidal system is
  1. A.Tyndall effect
  2. B.Brownian movements
  3. C.Flocculation
  4. D.None of the above
62
Protoplasm is actually
  1. A.Suspension
  2. B.True solution
  3. C.Colloidal solution
  4. D.Complex colloidal system of many phases
63
When ice melt and converted into water, its volume will be
  1. A.Decreased
  2. B.Increased
  3. C.Fixed or no change
  4. D.Either fixed or increased
64
Which one of the following inhibitors inhibits protein synthesis blocking the peptidyl transferase of eukaryotic ribosoma (80S only)
  1. A.Cycloheximide
  2. B.Tetracycline
  3. C.Streptomycin
  4. D.Actinomycin
65
Which one of the following antibiotic inhibitors inhibit protein synthesis by inhibiting the DNA direct synthesis of mRNA
  1. A.Cycloheximide
  2. B.Tetracycline
  3. C.Streptomycin
  4. D.Actinomycin
66
Which of the following antibiotic does not inhibit the protein synthesis but alter the ribosomes that disturb the translation mechanism
  1. A.Cycloheximide
  2. B.Tetracycline
  3. C.Streptomycin
  4. D.Actinomycin
67
Which of the following antibiotic inhibit the protein synthesis specifically and reversibly and prevent the elongation of polypeptide chain
  1. A.Cycloheximide
  2. B.Puromycin
  3. C.Streptomycin
  4. D.Actinomycin
68
Which of the following inhibit the protein synthesis by interfering with the transfer of amino acids by tRNA to ribosomes
  1. A.Cycloheximide
  2. B.Tetracycline
  3. C.Chloramphenicol
  4. D.Actinomycin
69
Who proposed the operon model of protein synthesis
  1. A.David Baltimore (1970)
  2. B.Thomas A. Steitz (2009)
  3. C.Jocob & Monod (1961)
  4. D.None of the above
70
Histone proteins are associated with
  1. A.Nucleic acid
  2. B.Carbohydrates
  3. C.Fatty substances
  4. D.Iron-porphyrin
71
Lipoproteins are associated with
  1. A.Nucleic acid
  2. B.Carbohydrates
  3. C.Fatty substances
  4. D.Iron-porphyrin
72
Which of the following proteins are chiefly found in the cytomembrane
  1. A.Lipoproteins
  2. B.Glycoprotein
  3. C.Histones
  4. D.Iron-porphyrin
73
Glycoproteins are associated with
  1. A.Nucleic acid
  2. B.Carbohydrates
  3. C.Fatty substances
  4. D.Iron-porphyrin
74
Conversion of dead organic compounds in the soil into ammonia by ammonifying bacteria is called as
  1. A.Denitrification
  2. B.Ammonification
  3. C.Nitrification
  4. D.None of the above
75
Oxidation of ammonia produced by ammonification to nitrifying bacteria is called as
  1. A.Denitrification
  2. B.Ammonification
  3. C.Nitrification
  4. D.None of the above
76
The nitrates and nitrites produced by nitrification may converted into molecular nitrogen by certain microorganism present in the soil is called as
  1. A.Denitrification
  2. B.Ammonification
  3. C.Nitrification
  4. D.None of the above
77
Which one of the following is the denitrifying bacterium
  1. A.Bacillus denitrificans
  2. B.Bacillus mycoides
  3. C.Bacillus valgaris
  4. D.Nitrosococcus
78
Which of the following is the ammonifying bacteria
  1. A.Bacillus mycoides & Bacillus valgaris
  2. B.Bacilusramosus
  3. C.Nitrosococcus
  4. D.Both (a) & (b)
79
Conversion of fat into carbohydrates is an example of
  1. A.Carboxylation
  2. B.Gluconeogenesis
  3. C.Methylation
  4. D.None of the above
80
The diagrammatic presentation of glyoxylic acid cycle or glyoxylate cycle was proposed by
  1. A.Lois pasture (1953)
  2. B.Kornberg & Krebs (1957)
  3. C.Bloor (1943)
  4. D.None of the above
81
Glyoxylate cycle is complete in
  1. A.Cytosol
  2. B.Glyoxysome
  3. C.Mitochondrion
  4. D.Cytosol, glyoxysome & mitochondrion
82
In the first step of nitrification, ammonia is oxidised into nitrites by which of the following nitrifying bacteria
  1. A.Nitrosomonas
  2. B.Nitrosococcus
  3. C.Both (a) & (b)
  4. D.None of the above
83
In the second step of nitrification, nitrites are oxidised to nitrates by which of the following bacteria
  1. A.Nitrosococcus
  2. B.Nitrosomonas
  3. C.Nitrobacter
  4. D.None of the above
84
Immediate source of electrons for reduction of nitrite to ammonia in chloroplast is
  1. A.NADH
  2. B.NADPH
  3. C.Reduced Ferredoxin
  4. D.None of the above
85
Which one of the following RNA model is based on clover leaf model
  1. A.tRNA
  2. B.mRNA
  3. C.rRNA
  4. D.None of the above
86
Arginine is
  1. A.Aromatic amino acid
  2. B.Heterocyclic amino acid
  3. C.Acidic amino acid
  4. D.Basic amino acid
87
DNA differ RNA in having
  1. A.Deoxyribose sugars
  2. B.Double helical structure
  3. C.Thymine bases
  4. D.All of the above
88
Conversion of nitrite to ammonia is mediated by transfer of
  1. A.Two electron
  2. B.Four electron
  3. C.Six electron
  4. D.Eight electron
89
In roots and leaves, nitrite reductase is found in
  1. A.Cytosol
  2. B.Cytoplasm
  3. C.Chloroplast & plastids
  4. D.None of the above
90
Synzyme is also known as
  1. A.Artificial enzymes
  2. B.Abzymes
  3. C.Apoenzymes
  4. D.None of the above
91
A synthetic molecule either a polymer or oligomer prepared to recreate the active site of an enzyme is called as
  1. A.Synzyme
  2. B.Abzyme
  3. C.Apoenzyme
  4. D.None of the above
92
The first artificial enzyme ribonuclease-A was synthesized by
  1. A.W. Kuhne (1831)
  2. B.Berzelius (1871)
  3. C.Bernd Gutte & R. B. Merrifield (1971)
  4. D.None of the above
93
The innovative technique for artificial enzyme Solid Phase Synthesis (SPS) was developed by
  1. A.Bernd Gutte
  2. B.R. B. Merrifield
  3. C.W. Kuhne
  4. D.Berzelius
94
The antibodies that catalyse specific chemical reaction and function like enzyme are called as
  1. A.Abzymes
  2. B.Synzymes
  3. C.Apemzyme
  4. D.None of the above
95
Robert Bruce Merrifield was the Nobel laureate of chemistry in
  1. A.1974
  2. B.1976
  3. C.1978
  4. D.1984
96
Linus Carl Pauling was the Nobel laureate of chemistry in
  1. A.1954 & 1962
  2. B.1956 & 1964
  3. C.1965 & 1971
  4. D.1973 & 1984
97
The catalytic monoclonal antibodies are also known as
  1. A.Abzymes
  2. B.Aponzymes
  3. C.Coenzymes
  4. D.None of the above
98
The coenzyme-A is also known as
  1. A.CoA
  2. B.CoA-SH
  3. C.Both (a) & (b)
  4. D.None of the above
99
The multiple form of the enzyme with the same catalytic activity but different structure are known as
  1. A.Synzymes
  2. B.Isozymes
  3. C.Rribozymes
  4. D.Desmolysing enzyme
100
The enzymes which is used in the study of post-transcriptional processing of RNA molecules as a catalytic RNA molecule is known as
  1. A.Synzymes
  2. B.Isozymes
  3. C.Rribozymes
  4. D.Desmolysing enzyme
101
Enzymes which are synthesized in the cell in inactive state in which condition they are called as
  1. A.Zymogens
  2. B.Pro-enzymes or Pre-enzymes
  3. C.Proteolytic enzyme
  4. D.All of the above
102
Ribozymes can be used as
  1. A.Sequence specific RNA cleaving agent
  2. B.Therapeutic agents
  3. C.Biochemical studies for the RNA
  4. D.All of the above
103
The enzymes hydrolyse and split the substrate molecule by the addition of water molecule are called as
  1. A.Hydrolysing enzyme
  2. B.Desmolysing enzyme
  3. C.Aldolases
  4. D.None of the above
104
The enzymes which catalyse the reactions in which C - chain is broken by addition or removal of atoms or group is called as
  1. A.Hydrolysing enzyme
  2. B.Desmolysing enzyme
  3. C.Aldolases
  4. D.None of the above
105
The enzyme which catalyse the reaction in which either double bond is established due to the removal of group, or a group is added to the double bond is called as
  1. A.Ligases
  2. B.Lyases
  3. C.Transferases
  4. D.Oxidoreductases
106
The enzyme which catalyse the reaction in which linking of two molecule is coupled with the breakdown of pyrophosphate bond of ATP or similar triphosphate
  1. A.Ligases
  2. B.Lyases
  3. C.Transferases
  4. D.Oxidoreductases
107
The enzyme which catalyse the reaction involving group transfer is called as
  1. A.Ligases
  2. B.Lyases
  3. C.Transferases
  4. D.Oxidoreductases
108
The enzyme which catalyse the oxidation-reduction reaction is called as
  1. A.Ligases
  2. B.Lyases
  3. C.Transferases
  4. D.Oxidoreductases
109
The part of enzyme which takes part in the reaction specific substrate combines with it and this combination brings about the biochemical reaction is called as
  1. A.Active site
  2. B.Apoenzyme
  3. C.Prosthetic group
  4. D.None of the above
110
The non-protein part of the enzyme sometimes required at the active centre for the enzyme is called as
  1. A.Active site
  2. B.Apoenzyme
  3. C.Prosthetic group
  4. D.None of the above
111
The non-protein part which are not tightly bound to the enzyme are called as
  1. A.Active site
  2. B.Apoenzyme
  3. C.Prosthetic group
  4. D.Cofactor
112
When a series of reactions is catalysed by a number of enzymes in sequence and final product may inhibit the activity of first enzyme of series then such type of inhibitors are called as
  1. A.Allosteric inhibitors
  2. B.Feedback inhibitors
  3. C.Both (a) & (b)
  4. D.None of the above
113
Michaelis-Menten constant is denoted by
  1. A.Vmax
  2. B.Km
  3. C.V
  4. D.Km + S
114
Which one of the following enzymes are known as therapeutic agents
  1. A.Ribozymes
  2. B.Co-factors
  3. C.Apo-enzymes
  4. D.Zymogens or pro-enzymes or pre-enzymes
115
In Fischer's formula of glucose, how many asymmetric carbon atoms are present
  1. A.4
  2. B.5
  3. C.6
  4. D.7
116
Which of the following formula provide most stable structure of D-glucose
  1. A.Fischer's projection formula
  2. B.Chair conformational formula
  3. C.Open chain formula
  4. D.Haworth's formula
117
According to international union of biochemistry (IUB-1961) all enzymes are divided in to
  1. A.6 classes
  2. B.8 classes
  3. C.5 classes
  4. D.4 classes
118
The cell first to reveal the enzyme activity in living organism
  1. A.Fungal cell
  2. B.Bacterial cell
  3. C.Yeast cell
  4. D.Viral cell
119
The enzymes related to post-transcriptional processing of RNA is known as
  1. A.Ribozymes
  2. B.Apo-enzymes
  3. C.Co-factors
  4. D.Zymogens or pro-enzymes or pre-enzymes
120
The first artificial enzymes (Ribonuclease A) was synthesized by
  1. A.Gutte, B. (1961)
  2. B.Gutte, B & Merrifiels, R.B. (1971)
  3. C.Merrifiels, R.B. (1981)
  4. D.None of the above
Question for ICAR AIEEA PG Plant Science 2026 - Quiz / Questions / MCQ - Toppersexam