Download Graduate Aptitude Test in Engineering (GATE) 2015 XL J Life Sciences Question Paper
XL-J 1/4
J : BOTANY
Q. 1 ? Q. 10 carry one mark each.
Q.1 Nuclear membrane is absent in
(A) Chlamydomonas
(B) Nostoc
(C) Volvox
(D) Chlorella
Q.2 An organized and differentiated cell having cytoplasm but no nucleus is found in
(A) Companion cell
(B) Xylem parenchyma
(C) Sieve tube element
(D) Phloem parenchyma
Q.3 Double haploids in plants can be induced by
(A) Mitomycin-C
(B) Mirin
(C) Colchicine
(D) 5-Azacytidine
Q.4 During fatty acid biosynthesis, the first intermediate malonyl-CoA is formed from
(A) Acetyl-CoA and bicarbonate
(B) Two acetyl-CoA molecules
(C) Acetyl-CoA and biotin
(D) Palmitoyl CoA and acyl-carrier protein (ACP)
Q.5 Which of the following techniques is NOT applicable for evaluating the expression of a transgene?
(A) Northern blot
(B) RT-PCR
(C) Western blot
(D) Southern blot
Q.6 Identify the CORRECT family possessing the following characters: presence of glucosinolates,
tetradynamous stamens, superior ovary with parietal placentation and siliqua type fruit
(A) Brassicaceae
(B) Capparidaceae
(C) Fumariaceae
(D) Papavaraceae
Q.7 Which of the following reduces the transpiration rate when applied to aerial parts of plants?
(A) Phosphon-D
(B) Paraquat
(C) Phenyl mercuric acetate
(D) Valinomycin
Q.8 A tube like membrane structure that forms the connection between the endoplasmic reticulum of
neighboring cells through plasmodesmata is
(A) Desmotubule (B) Desmosome (C) Dictyosome (D) Microtubule
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GATE 2015 BOTANY ? XL-J
XL-J 1/4
J : BOTANY
Q. 1 ? Q. 10 carry one mark each.
Q.1 Nuclear membrane is absent in
(A) Chlamydomonas
(B) Nostoc
(C) Volvox
(D) Chlorella
Q.2 An organized and differentiated cell having cytoplasm but no nucleus is found in
(A) Companion cell
(B) Xylem parenchyma
(C) Sieve tube element
(D) Phloem parenchyma
Q.3 Double haploids in plants can be induced by
(A) Mitomycin-C
(B) Mirin
(C) Colchicine
(D) 5-Azacytidine
Q.4 During fatty acid biosynthesis, the first intermediate malonyl-CoA is formed from
(A) Acetyl-CoA and bicarbonate
(B) Two acetyl-CoA molecules
(C) Acetyl-CoA and biotin
(D) Palmitoyl CoA and acyl-carrier protein (ACP)
Q.5 Which of the following techniques is NOT applicable for evaluating the expression of a transgene?
(A) Northern blot
(B) RT-PCR
(C) Western blot
(D) Southern blot
Q.6 Identify the CORRECT family possessing the following characters: presence of glucosinolates,
tetradynamous stamens, superior ovary with parietal placentation and siliqua type fruit
(A) Brassicaceae
(B) Capparidaceae
(C) Fumariaceae
(D) Papavaraceae
Q.7 Which of the following reduces the transpiration rate when applied to aerial parts of plants?
(A) Phosphon-D
(B) Paraquat
(C) Phenyl mercuric acetate
(D) Valinomycin
Q.8 A tube like membrane structure that forms the connection between the endoplasmic reticulum of
neighboring cells through plasmodesmata is
(A) Desmotubule (B) Desmosome (C) Dictyosome (D) Microtubule
GATE 2015 BOTANY ? XL-J
XL-J 2/4
Q.9 Which one of the followings is NOT a cryoprotectant for plant tissue?
(A) Dimethyl sulfoxide
(B) Glycerol
(C) Ethylene glycol
(D) Liquid nitrogen
Q.10 Two similar holotypes are called
(A) Monotype (B) Neotype (C) Isotype (D) Syntype
Q. 11 ? Q. 20 carry two marks each.
Q.11 A cross was made between AABBCCDDEE and aabbccddee. The resultants F
1
were selfed.
Applying Mendelian principle, PREDICT the proportion of phenotype showing all the recessive
characters in F
2
generation.
(A)
1
64
(B)
1
256
(C)
1
512
(D)
1
1024
Q.12
Identify the CORRECT statements with respect to functioning of ecosystem.
P. A food chain is a series of organisms, each one feeding on the organism succeeding it
Q. Food web presents a complete picture of the feeding relationships in any given ecosystem
R. In ecosystem, energy flows in unidirectional way, whereas nutrients flow in cyclic fashion
S. In biogeochemical cycles, nutrients do not alternate between organisms and environment
(A) P, Q (B) P, R (C) R, S (D) Q, R
Q.13 Match the name of the diseases with their causal organisms.
Disease Causal Organism
P. Loose smut of wheat 1. Cercospora personata
Q. Wart disease of potato 2. Alternaria solani
R. Panama disease of banana 3. Synchytrium endobioticum
S. Tikka disease of groundnut 4. Ustilago tritici
5. Fusarium oxysporum
6. Erwinia amylovora
(A) P-6, Q-4, R-3, S-2 (B) P-4, Q-6, R-1, S-3
(C) P-4, Q-3, R-5, S-1 (D) P-2, Q-3, R-2, S-6
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GATE 2015 BOTANY ? XL-J
XL-J 1/4
J : BOTANY
Q. 1 ? Q. 10 carry one mark each.
Q.1 Nuclear membrane is absent in
(A) Chlamydomonas
(B) Nostoc
(C) Volvox
(D) Chlorella
Q.2 An organized and differentiated cell having cytoplasm but no nucleus is found in
(A) Companion cell
(B) Xylem parenchyma
(C) Sieve tube element
(D) Phloem parenchyma
Q.3 Double haploids in plants can be induced by
(A) Mitomycin-C
(B) Mirin
(C) Colchicine
(D) 5-Azacytidine
Q.4 During fatty acid biosynthesis, the first intermediate malonyl-CoA is formed from
(A) Acetyl-CoA and bicarbonate
(B) Two acetyl-CoA molecules
(C) Acetyl-CoA and biotin
(D) Palmitoyl CoA and acyl-carrier protein (ACP)
Q.5 Which of the following techniques is NOT applicable for evaluating the expression of a transgene?
(A) Northern blot
(B) RT-PCR
(C) Western blot
(D) Southern blot
Q.6 Identify the CORRECT family possessing the following characters: presence of glucosinolates,
tetradynamous stamens, superior ovary with parietal placentation and siliqua type fruit
(A) Brassicaceae
(B) Capparidaceae
(C) Fumariaceae
(D) Papavaraceae
Q.7 Which of the following reduces the transpiration rate when applied to aerial parts of plants?
(A) Phosphon-D
(B) Paraquat
(C) Phenyl mercuric acetate
(D) Valinomycin
Q.8 A tube like membrane structure that forms the connection between the endoplasmic reticulum of
neighboring cells through plasmodesmata is
(A) Desmotubule (B) Desmosome (C) Dictyosome (D) Microtubule
GATE 2015 BOTANY ? XL-J
XL-J 2/4
Q.9 Which one of the followings is NOT a cryoprotectant for plant tissue?
(A) Dimethyl sulfoxide
(B) Glycerol
(C) Ethylene glycol
(D) Liquid nitrogen
Q.10 Two similar holotypes are called
(A) Monotype (B) Neotype (C) Isotype (D) Syntype
Q. 11 ? Q. 20 carry two marks each.
Q.11 A cross was made between AABBCCDDEE and aabbccddee. The resultants F
1
were selfed.
Applying Mendelian principle, PREDICT the proportion of phenotype showing all the recessive
characters in F
2
generation.
(A)
1
64
(B)
1
256
(C)
1
512
(D)
1
1024
Q.12
Identify the CORRECT statements with respect to functioning of ecosystem.
P. A food chain is a series of organisms, each one feeding on the organism succeeding it
Q. Food web presents a complete picture of the feeding relationships in any given ecosystem
R. In ecosystem, energy flows in unidirectional way, whereas nutrients flow in cyclic fashion
S. In biogeochemical cycles, nutrients do not alternate between organisms and environment
(A) P, Q (B) P, R (C) R, S (D) Q, R
Q.13 Match the name of the diseases with their causal organisms.
Disease Causal Organism
P. Loose smut of wheat 1. Cercospora personata
Q. Wart disease of potato 2. Alternaria solani
R. Panama disease of banana 3. Synchytrium endobioticum
S. Tikka disease of groundnut 4. Ustilago tritici
5. Fusarium oxysporum
6. Erwinia amylovora
(A) P-6, Q-4, R-3, S-2 (B) P-4, Q-6, R-1, S-3
(C) P-4, Q-3, R-5, S-1 (D) P-2, Q-3, R-2, S-6
GATE 2015 BOTANY ? XL-J
XL-J 3/4
Q.14 Match the plant products with their sources and the plant parts from which they are obtained.
Product Source Plant part
P. Annatto 1. Acacia catechu i. Seed
Q. Cutch 2. Rubia tinctorum ii. Leaf
R. Henna 3. Bixa orellana iii. Root
S. Alizarin 4. Lawsonia inermis iv. Stem
(A) P-3-ii, Q-4-i, R-2-iii, S-1-iv (B) P-3-i, Q-1-iv, R-4-ii, S-2-iii
(C) P-2-ii, Q-1-iii, R-4-iv, S-3-i (D) P-4-ii, Q-3-iv, R-1-iii, S-2-i
Q.15 Match the floral structures with the families and representative plant species.
Floral structure Family Plant
P. Gynostegium 1. Orchidaceae i. Ocimum sanctum
Q. Gynostemium 2. Lamiaceae ii. Cleome gynandra
R. Gynobasic style 3. Capparidaceae iii. Calotropis procera
S. Gynophore 4. Asclepiadaceae iv. Vanilla planifolia
(A) P-2-i, Q-3-iii, R-4-ii, S-1-iv (B) P-3-ii, Q-4-I, R-2-iii, S-1-iv
(C) P-4-iii, Q-1-iv, R-2-i, S-3-ii (D) P-4-ii, Q-2-iii, R-1-iv, S-3-i
Q.16 Identify the INCORRECT statements with respect to plastid transformation.
P. Antibiotic used for selection of trasplastomic plant is spectinomycin
Q. Chances of gene escape from transplastomic plants are high
R. Microprojectile bombardment is the method of DNA delivery
S. Levels of transgene expression are low
(A) P, R (B) P, Q (C) Q, S (D) R, S
Q.17 Which of the following statements are TRUE with regard to the similarities between Crassulacean
Acid Metabolism (CAM) and C
4
cycle?
P. Stomata open during night and remain closed during the day
Q. PEPcase is the carboxylating enzyme to form C
4
acid
R. C
4
acid is decarboxylated to provide CO
2
for C
3
cycle
S. Kranz anatomy is predominant in both CAM and C
4
plants
(A) P, S (B) Q, R (C) P, Q (D) R, S
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GATE 2015 BOTANY ? XL-J
XL-J 1/4
J : BOTANY
Q. 1 ? Q. 10 carry one mark each.
Q.1 Nuclear membrane is absent in
(A) Chlamydomonas
(B) Nostoc
(C) Volvox
(D) Chlorella
Q.2 An organized and differentiated cell having cytoplasm but no nucleus is found in
(A) Companion cell
(B) Xylem parenchyma
(C) Sieve tube element
(D) Phloem parenchyma
Q.3 Double haploids in plants can be induced by
(A) Mitomycin-C
(B) Mirin
(C) Colchicine
(D) 5-Azacytidine
Q.4 During fatty acid biosynthesis, the first intermediate malonyl-CoA is formed from
(A) Acetyl-CoA and bicarbonate
(B) Two acetyl-CoA molecules
(C) Acetyl-CoA and biotin
(D) Palmitoyl CoA and acyl-carrier protein (ACP)
Q.5 Which of the following techniques is NOT applicable for evaluating the expression of a transgene?
(A) Northern blot
(B) RT-PCR
(C) Western blot
(D) Southern blot
Q.6 Identify the CORRECT family possessing the following characters: presence of glucosinolates,
tetradynamous stamens, superior ovary with parietal placentation and siliqua type fruit
(A) Brassicaceae
(B) Capparidaceae
(C) Fumariaceae
(D) Papavaraceae
Q.7 Which of the following reduces the transpiration rate when applied to aerial parts of plants?
(A) Phosphon-D
(B) Paraquat
(C) Phenyl mercuric acetate
(D) Valinomycin
Q.8 A tube like membrane structure that forms the connection between the endoplasmic reticulum of
neighboring cells through plasmodesmata is
(A) Desmotubule (B) Desmosome (C) Dictyosome (D) Microtubule
GATE 2015 BOTANY ? XL-J
XL-J 2/4
Q.9 Which one of the followings is NOT a cryoprotectant for plant tissue?
(A) Dimethyl sulfoxide
(B) Glycerol
(C) Ethylene glycol
(D) Liquid nitrogen
Q.10 Two similar holotypes are called
(A) Monotype (B) Neotype (C) Isotype (D) Syntype
Q. 11 ? Q. 20 carry two marks each.
Q.11 A cross was made between AABBCCDDEE and aabbccddee. The resultants F
1
were selfed.
Applying Mendelian principle, PREDICT the proportion of phenotype showing all the recessive
characters in F
2
generation.
(A)
1
64
(B)
1
256
(C)
1
512
(D)
1
1024
Q.12
Identify the CORRECT statements with respect to functioning of ecosystem.
P. A food chain is a series of organisms, each one feeding on the organism succeeding it
Q. Food web presents a complete picture of the feeding relationships in any given ecosystem
R. In ecosystem, energy flows in unidirectional way, whereas nutrients flow in cyclic fashion
S. In biogeochemical cycles, nutrients do not alternate between organisms and environment
(A) P, Q (B) P, R (C) R, S (D) Q, R
Q.13 Match the name of the diseases with their causal organisms.
Disease Causal Organism
P. Loose smut of wheat 1. Cercospora personata
Q. Wart disease of potato 2. Alternaria solani
R. Panama disease of banana 3. Synchytrium endobioticum
S. Tikka disease of groundnut 4. Ustilago tritici
5. Fusarium oxysporum
6. Erwinia amylovora
(A) P-6, Q-4, R-3, S-2 (B) P-4, Q-6, R-1, S-3
(C) P-4, Q-3, R-5, S-1 (D) P-2, Q-3, R-2, S-6
GATE 2015 BOTANY ? XL-J
XL-J 3/4
Q.14 Match the plant products with their sources and the plant parts from which they are obtained.
Product Source Plant part
P. Annatto 1. Acacia catechu i. Seed
Q. Cutch 2. Rubia tinctorum ii. Leaf
R. Henna 3. Bixa orellana iii. Root
S. Alizarin 4. Lawsonia inermis iv. Stem
(A) P-3-ii, Q-4-i, R-2-iii, S-1-iv (B) P-3-i, Q-1-iv, R-4-ii, S-2-iii
(C) P-2-ii, Q-1-iii, R-4-iv, S-3-i (D) P-4-ii, Q-3-iv, R-1-iii, S-2-i
Q.15 Match the floral structures with the families and representative plant species.
Floral structure Family Plant
P. Gynostegium 1. Orchidaceae i. Ocimum sanctum
Q. Gynostemium 2. Lamiaceae ii. Cleome gynandra
R. Gynobasic style 3. Capparidaceae iii. Calotropis procera
S. Gynophore 4. Asclepiadaceae iv. Vanilla planifolia
(A) P-2-i, Q-3-iii, R-4-ii, S-1-iv (B) P-3-ii, Q-4-I, R-2-iii, S-1-iv
(C) P-4-iii, Q-1-iv, R-2-i, S-3-ii (D) P-4-ii, Q-2-iii, R-1-iv, S-3-i
Q.16 Identify the INCORRECT statements with respect to plastid transformation.
P. Antibiotic used for selection of trasplastomic plant is spectinomycin
Q. Chances of gene escape from transplastomic plants are high
R. Microprojectile bombardment is the method of DNA delivery
S. Levels of transgene expression are low
(A) P, R (B) P, Q (C) Q, S (D) R, S
Q.17 Which of the following statements are TRUE with regard to the similarities between Crassulacean
Acid Metabolism (CAM) and C
4
cycle?
P. Stomata open during night and remain closed during the day
Q. PEPcase is the carboxylating enzyme to form C
4
acid
R. C
4
acid is decarboxylated to provide CO
2
for C
3
cycle
S. Kranz anatomy is predominant in both CAM and C
4
plants
(A) P, S (B) Q, R (C) P, Q (D) R, S
GATE 2015 BOTANY ? XL-J
XL-J 4/4
Q. 18 With respect to germination of seeds, the CORRECT sequence of events is
P. Seed imbibes water
Q. Mobilization of starch reserve to embryo
R. Diffusion of gibberellin from embryo to aleurone layer
S. Synthesis of ?-amylase in the aleurone layer
(A) P, Q, S, R (B) P, R, S, Q
(C) R, P, Q, S (D) R, Q, P, S
Q.19 Identify the CORRECT statements with regard to the function of plant hormones
P. ABA is synthesized from chorismate and promotes viviparous germination
Q. Auxin induces acidification of cell wall followed by turgour-induced cell expansion
R. Gibberellin-reponsive genes become activated by the repression of DELLA protein
S. Cytokinin regulates the G
2
to M transition in the cell cycle
(A) P, Q (B) Q, R (C) Q, S (D) P, R
Q.20 Statements given below are either TRUE (T) or FALSE (F). Find the correct combination.
P. Somatic embryo is unipolar in nature
Q. Heterokaryon can be selected using a fluorescence-activated cell sorter (FACS)
R. The term somaclonal variation is coined by Larkin and Scowcroft
S. Differentiation of shoot buds during in vitro culture is known as somatic embryogenesis
(A) P-T, Q-F, R-T, S-F (B) P-F, Q-T, R-F, S-T
(C) P-T, Q-F, R-F, S-T (D) P-F, Q-T, R-T, S-F
END OF THE QUESTION PAPER
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This post was last modified on 19 December 2019