BOTANY- PAGE 16
1 Select incorrect statement-
1) Apomixis is defined as the asexual formation of a seed from the maternal tissues avoiding the processes of meiosis and fertilization.
2) Apomixis occurs in Citrus and Mango
3) Pennisetum species do not exhibit apomixis
4) Apomictic seed are clonal seeds
Ans: 3
2. Select incorrect statement-
1) Plant perpetuate in nature through endosperm
2) Endosperm of several plants have been cultured to produce triploid plants
3) Endosperm tissue of most of the angiosperm are triploid and are storage tissue
4) In general endosperm tissues have higher dosages of genes of female parent.
Ans: 1
3. Successful attempts were made through anther culture for production of haploid plants by-
1) P. Maheshwari and B.M.Johri
2) S.S.Bhojwani and B.M.Johri
3) Shipra-Guha Mukherjee and S.C.Maheshwari
4) Sipra-Guha Mukherjee and P.Maheshwari
Ans: 3
4. Select incorrect statement-
1) Embryophytes and algae are distantly related yet they are similar in their possession of carbohydraterich cell walls,
2) Cell walls are of integral importance being involved in many physiological processes.
3) Bacteria and mycoplasmas have cell walls composed of peptidoglycan
4) Cell walls of Oomycetes do not contain chitin, which occurs in the cell walls of true fungi.
Ans: 3
5. Select incorrect statement-
1) The pairing of complementary deoxyribonucleic acid (DNA) strands produce DNA–DNA hybrids
2) Pairing of complementary DNA–RNA strands produce DNA–RNA hybrids
3) Hybrid formation are based on the property of specific hydrogen bonds forming between complementary nucleotide base pairs.
4) Western blotting (protein immobilization) is based on principle of nucleic acid hybridization
Ans: 4
6. Select incorrect statement-
1) Leaves are produced in succession on the Shoot Apical Meristem (SAM) of a plant
2) Leaf morphogenesis includes initiation, acquisition of sub-organ identities, and tissue differentiation
3) The expression of various genes is involved in leaf morphogenesis
4) All embryophytes have true vascularized leaves
Ans: 4
7. Select incorrect statement Wood (secondary xylem) is manufactured by a succession of major steps including-
1) Cell division, cell expansion (elongation and radial enlargement)
2) Cell wall thickening (cellulose, hemicellulose, cell wall proteins, lignin biosynthesis and deposition),
3) Programmed cell death
4) Formation of Hard Wood (HD) with functional parenchyma
Ans: 4
8. Genetic Male Sterility is governed by nuclear genes; in most of the cases by recessive (ms) gene. However it is rarely controlled by single dominant gene (Ms) as in-
1) Sunflower
2) Safflower
3) Rice
4) Barley
Ans: 2
9. Heteromorphic-sporophytic self-compatibility is found in-
1) Solanum and Petunia species
2) Primula species
3) Brassica species
4) Prunus species
Ans: 2
10. The term "ecosystem" was first used in scientific publication by-
1) Eugene Odum
2) Arthur G.Tansley
3) G. Evelyn Hutchinson
4) Howard T. Odum
Ans: 2
11. A permafrost is-
1) Perennially frozen ground
2) Methyl clathrates–rich area
3) Any ice-rich area
4) High latitudes in and around the Arctic and Antarctic regions
Ans: 1
12. The word "ecology" ("Ökologie") was coined by
1) German scientist Ernst Haeckel
2) G. Evelyn Hutchinson
3) Thomas Robert Malthus
4) James Lovelock
Ans: 1
13. Select odd member-
1) Pearl-millet
2) Sugarcane
3) Maize
4) Rice
Ans: 4
14. Dwarfism is a desirable trait for many agricultural plants. Dwarfism is caused by mutations in genes controlling the biosynthesis or signaling pathway of a plant hormone. The hormone is-
1) Gibberellic acid (GA)
2) Ethylene
3) Auxin
4) Strigolacton
Ans: 1
15. The plant hormone that promote fruit ripening-
1) ABA
2) Ethylene
3) Brassinosteroid
4) Cytokinin
Ans: 2
16. Select non-CAM plant
1) Agave
2) Isoetes howellii
3) Ananas comosus (Pineapple)
4) Malus domestica (apple)
Ans: 4
17. Shikonin( alkanin) is obtained from-
1) Momordica dioica
2) Arnebia Species
3) Lysium barbarum
4) Blepharis species
Ans: 2
18. Select incorrect statement-
1) Photorespiration interferes with CO2 fixation by enzyme Rubisco
2) Photorespiration uses energy that could otherwise be used for photosynthetic carbon reduction
3) Photorespiration causes the release of CO2 from previously fixed carbon
4) Photorespiration substantially reduces the efficiency of photosynthesis in plants, especially crop plants such as Zea mays
Ans: 4
19. Plant hormone that affects stomatal movement the most, is-
1) ABA
2) Strigolacton
3) Ethylene
4) IBA
Ans: 1
20. If seeds are germinated in the dark, the seedling(s) have elongated stems, undifferentiated chloroplasts and unexpanded leaves. The control of plant growth, development, and differentiation in response to growth in darkness is called as-
1) Skotomorphogeneis
2) Photomorphogeneis
3) Etiolation
4) Phyto-skoto-morphogenesis
Ans: 1
21. Haberlandt’s dream of producing a whole plant from a single isolated cell was realized by-
1) I.K.Vasil and A.C.Hildebrandt
2) V.Vasil, and A.C. Hildebrandt
3) F.C.Steward, M.O. Mapes and K Mears
4) J.Reinert
Ans: 2
22. Monocots are difficult to grow in vitro. Applications of plant tissue culture technology in cereal,palms and grasses were slow. The use of synthetic auxin(s) in culture media helped the tissue culturist to succeed. The synthetic auxin used was/is-
1) TIBA
2) NAA
3) 2, 4-Dichlophenoxy acetic acid (2,4-D)
4) IPA
Ans: 3
23. Hairy Root disease is caused by-
1) Agrobacterium tumefaciens
2) Agrobacterium rhizogenes
3) Agrobacterium rubi
4) Agrobacterium radiobacter
Ans: 2
24. Transplastomic plants are produced by-
1) Transfer of plastids of one species to the other
2) Genetic transfer of foreign gene to plastome (plastid transformation) using particle gun technology
3) Genetic transfer of foreign gene into mitochondrial genomes
4) Fusion of enucleated protoplast with nucleated protoplasts by electro fusion
Ans: 2
25. Select pair of names of scientists who contributed in molecular genetics, each of whom got two Nobel Prizes-
1) Barbara McClintock and N.E. Borlaug
2) L. C. Pauling and F. Sanger
3) S. Brenner and S. Altman
4) S. B. Prusiner and T.R Cech
Ans: 2
1) Apomixis is defined as the asexual formation of a seed from the maternal tissues avoiding the processes of meiosis and fertilization.
2) Apomixis occurs in Citrus and Mango
3) Pennisetum species do not exhibit apomixis
4) Apomictic seed are clonal seeds
Ans: 3
2. Select incorrect statement-
1) Plant perpetuate in nature through endosperm
2) Endosperm of several plants have been cultured to produce triploid plants
3) Endosperm tissue of most of the angiosperm are triploid and are storage tissue
4) In general endosperm tissues have higher dosages of genes of female parent.
Ans: 1
3. Successful attempts were made through anther culture for production of haploid plants by-
1) P. Maheshwari and B.M.Johri
2) S.S.Bhojwani and B.M.Johri
3) Shipra-Guha Mukherjee and S.C.Maheshwari
4) Sipra-Guha Mukherjee and P.Maheshwari
Ans: 3
4. Select incorrect statement-
1) Embryophytes and algae are distantly related yet they are similar in their possession of carbohydraterich cell walls,
2) Cell walls are of integral importance being involved in many physiological processes.
3) Bacteria and mycoplasmas have cell walls composed of peptidoglycan
4) Cell walls of Oomycetes do not contain chitin, which occurs in the cell walls of true fungi.
Ans: 3
5. Select incorrect statement-
1) The pairing of complementary deoxyribonucleic acid (DNA) strands produce DNA–DNA hybrids
2) Pairing of complementary DNA–RNA strands produce DNA–RNA hybrids
3) Hybrid formation are based on the property of specific hydrogen bonds forming between complementary nucleotide base pairs.
4) Western blotting (protein immobilization) is based on principle of nucleic acid hybridization
Ans: 4
6. Select incorrect statement-
1) Leaves are produced in succession on the Shoot Apical Meristem (SAM) of a plant
2) Leaf morphogenesis includes initiation, acquisition of sub-organ identities, and tissue differentiation
3) The expression of various genes is involved in leaf morphogenesis
4) All embryophytes have true vascularized leaves
Ans: 4
7. Select incorrect statement Wood (secondary xylem) is manufactured by a succession of major steps including-
1) Cell division, cell expansion (elongation and radial enlargement)
2) Cell wall thickening (cellulose, hemicellulose, cell wall proteins, lignin biosynthesis and deposition),
3) Programmed cell death
4) Formation of Hard Wood (HD) with functional parenchyma
Ans: 4
8. Genetic Male Sterility is governed by nuclear genes; in most of the cases by recessive (ms) gene. However it is rarely controlled by single dominant gene (Ms) as in-
1) Sunflower
2) Safflower
3) Rice
4) Barley
Ans: 2
9. Heteromorphic-sporophytic self-compatibility is found in-
1) Solanum and Petunia species
2) Primula species
3) Brassica species
4) Prunus species
Ans: 2
10. The term "ecosystem" was first used in scientific publication by-
1) Eugene Odum
2) Arthur G.Tansley
3) G. Evelyn Hutchinson
4) Howard T. Odum
Ans: 2
11. A permafrost is-
1) Perennially frozen ground
2) Methyl clathrates–rich area
3) Any ice-rich area
4) High latitudes in and around the Arctic and Antarctic regions
Ans: 1
12. The word "ecology" ("Ökologie") was coined by
1) German scientist Ernst Haeckel
2) G. Evelyn Hutchinson
3) Thomas Robert Malthus
4) James Lovelock
Ans: 1
13. Select odd member-
1) Pearl-millet
2) Sugarcane
3) Maize
4) Rice
Ans: 4
14. Dwarfism is a desirable trait for many agricultural plants. Dwarfism is caused by mutations in genes controlling the biosynthesis or signaling pathway of a plant hormone. The hormone is-
1) Gibberellic acid (GA)
2) Ethylene
3) Auxin
4) Strigolacton
Ans: 1
15. The plant hormone that promote fruit ripening-
1) ABA
2) Ethylene
3) Brassinosteroid
4) Cytokinin
Ans: 2
16. Select non-CAM plant
1) Agave
2) Isoetes howellii
3) Ananas comosus (Pineapple)
4) Malus domestica (apple)
Ans: 4
17. Shikonin( alkanin) is obtained from-
1) Momordica dioica
2) Arnebia Species
3) Lysium barbarum
4) Blepharis species
Ans: 2
18. Select incorrect statement-
1) Photorespiration interferes with CO2 fixation by enzyme Rubisco
2) Photorespiration uses energy that could otherwise be used for photosynthetic carbon reduction
3) Photorespiration causes the release of CO2 from previously fixed carbon
4) Photorespiration substantially reduces the efficiency of photosynthesis in plants, especially crop plants such as Zea mays
Ans: 4
19. Plant hormone that affects stomatal movement the most, is-
1) ABA
2) Strigolacton
3) Ethylene
4) IBA
Ans: 1
20. If seeds are germinated in the dark, the seedling(s) have elongated stems, undifferentiated chloroplasts and unexpanded leaves. The control of plant growth, development, and differentiation in response to growth in darkness is called as-
1) Skotomorphogeneis
2) Photomorphogeneis
3) Etiolation
4) Phyto-skoto-morphogenesis
Ans: 1
21. Haberlandt’s dream of producing a whole plant from a single isolated cell was realized by-
1) I.K.Vasil and A.C.Hildebrandt
2) V.Vasil, and A.C. Hildebrandt
3) F.C.Steward, M.O. Mapes and K Mears
4) J.Reinert
Ans: 2
22. Monocots are difficult to grow in vitro. Applications of plant tissue culture technology in cereal,palms and grasses were slow. The use of synthetic auxin(s) in culture media helped the tissue culturist to succeed. The synthetic auxin used was/is-
1) TIBA
2) NAA
3) 2, 4-Dichlophenoxy acetic acid (2,4-D)
4) IPA
Ans: 3
23. Hairy Root disease is caused by-
1) Agrobacterium tumefaciens
2) Agrobacterium rhizogenes
3) Agrobacterium rubi
4) Agrobacterium radiobacter
Ans: 2
24. Transplastomic plants are produced by-
1) Transfer of plastids of one species to the other
2) Genetic transfer of foreign gene to plastome (plastid transformation) using particle gun technology
3) Genetic transfer of foreign gene into mitochondrial genomes
4) Fusion of enucleated protoplast with nucleated protoplasts by electro fusion
Ans: 2
25. Select pair of names of scientists who contributed in molecular genetics, each of whom got two Nobel Prizes-
1) Barbara McClintock and N.E. Borlaug
2) L. C. Pauling and F. Sanger
3) S. Brenner and S. Altman
4) S. B. Prusiner and T.R Cech
Ans: 2
26. Polymerase Chain Reaction (PCR) was improved and used practically by-
1) K. Kleppe and H.G. Khorana
2) Kary B. Mullis
3) Michael Smith
4) H.G. Khorana
Ans: 2
27. Which one of the following is not PCR-based molecular marker technology-
1) RFLP
2) RAPD
3) SSR
4) VNTR
Ans: 1
28. The smallest genome among the cereals is of-
1) Bread Wheat
2) Maize
3) Barley
4) Rice
Ans: 4
29. Plastids (Chloroplasts) of autotrophic angiosperms carry important genetic information for plant life. Their plastome is polyploid and circular plasmid like, with size of-
1) 200 Kilo base pairs
2) 16 Kilo base pairs
3) 120-170 Kilo base pairs
4) 200- 2500 Kilo base pairs
Ans: 3
30. Fluorescence in situ Hybridization (FISH) and Genomic in situ Hybridization (GISH) is for gene localization, genome analyses and mapping. GISH is different from FISH as-
1) A radio-isotope labeled gene is used as probe for hybridization to DNA
2) A segment of DNA/nucleotides labeled with fluorochrome(s) is used as probe(s) for localization of complementary DNA in the genome
3) Radioisotope-labeled total genomic DNA of any unknown plant species is used as probe to hybridize ( target) chromosome DNA in situ
4) Entire labeled nuclear DNA (Genome) of a known plant species is used as probe in hybridization to chromosome DNA in situ
Ans: 4
31. Method used to isolate, purify and enrich (concentrate) a specific protein from a mixture using a specific antibody immobilized on a solid support, is called as-
1) Immunoprecipitation
2) RNA-immunoprecipitation
3) Chromatin-immunoprecipitation
4) Protein complex-immunoprecipitation
Ans: 1
32. Select incorrect statement-
1) Ti-Plasmid (180-205kb in size) is used as vector for gene transfer in plants. Direct repeats of 25 base pairs, the right border (RB) and left border (LB), are essential for T-DNA transfer
2) An elaborate mechanism for T-DNA transfer is encoded by a series of virulence (vir) genes (vir A, B, C, D, E, and G) on the Ti plasmid that map outside TDNA.
3) These vir genes are inducible by chemical signals released by wounded plant cells
4) Vir A gene can be replaced with acetosyringone, a phenolic compound
Ans: 4
33. Select correct statement-
1) Inheritance of plastidic (that carry plastomic gene) genes does not follow Mendel’s laws
2) RNA editing and gene imprinting however, do not challenge Mendel’s laws
3) Presence of Transposons/Casposons also do not challenge classical laws of genetics
4) Changes caused by methylation of DNA do not challenge Mendel’s laws of inheritance.
Ans: 1
34. What is the largest constituent of potato ?
1) Protein
2) Carbohydrate
3) VitaminA
4) Minerals
Ans: 2
35. Plants growing in dry habitat are called __________ .
(A) Xerophytes (B) Lithophytes (C) Mesophytes (D) Crysophytes
Ans: A
36. The study of fossil is known as __________ .
(A) Osteology (B) Histology (C) Mycology (D) Palaentology
Ans: D
37. The loss of water in liquid form from the leaves of plants is __________ .
(A) Transpiration (B) Guttation (C) Evaporation (D) Translocation
Ans: B
38. Which of the following set is the pyramidines present in RNA ?
(A) Uracil and Cytosine (B) Adenine and Uracil
(C) Guanine and Uracil (D) Thymine and Uracil
Ans: A
1) K. Kleppe and H.G. Khorana
2) Kary B. Mullis
3) Michael Smith
4) H.G. Khorana
Ans: 2
27. Which one of the following is not PCR-based molecular marker technology-
1) RFLP
2) RAPD
3) SSR
4) VNTR
Ans: 1
28. The smallest genome among the cereals is of-
1) Bread Wheat
2) Maize
3) Barley
4) Rice
Ans: 4
29. Plastids (Chloroplasts) of autotrophic angiosperms carry important genetic information for plant life. Their plastome is polyploid and circular plasmid like, with size of-
1) 200 Kilo base pairs
2) 16 Kilo base pairs
3) 120-170 Kilo base pairs
4) 200- 2500 Kilo base pairs
Ans: 3
30. Fluorescence in situ Hybridization (FISH) and Genomic in situ Hybridization (GISH) is for gene localization, genome analyses and mapping. GISH is different from FISH as-
1) A radio-isotope labeled gene is used as probe for hybridization to DNA
2) A segment of DNA/nucleotides labeled with fluorochrome(s) is used as probe(s) for localization of complementary DNA in the genome
3) Radioisotope-labeled total genomic DNA of any unknown plant species is used as probe to hybridize ( target) chromosome DNA in situ
4) Entire labeled nuclear DNA (Genome) of a known plant species is used as probe in hybridization to chromosome DNA in situ
Ans: 4
31. Method used to isolate, purify and enrich (concentrate) a specific protein from a mixture using a specific antibody immobilized on a solid support, is called as-
1) Immunoprecipitation
2) RNA-immunoprecipitation
3) Chromatin-immunoprecipitation
4) Protein complex-immunoprecipitation
Ans: 1
32. Select incorrect statement-
1) Ti-Plasmid (180-205kb in size) is used as vector for gene transfer in plants. Direct repeats of 25 base pairs, the right border (RB) and left border (LB), are essential for T-DNA transfer
2) An elaborate mechanism for T-DNA transfer is encoded by a series of virulence (vir) genes (vir A, B, C, D, E, and G) on the Ti plasmid that map outside TDNA.
3) These vir genes are inducible by chemical signals released by wounded plant cells
4) Vir A gene can be replaced with acetosyringone, a phenolic compound
Ans: 4
33. Select correct statement-
1) Inheritance of plastidic (that carry plastomic gene) genes does not follow Mendel’s laws
2) RNA editing and gene imprinting however, do not challenge Mendel’s laws
3) Presence of Transposons/Casposons also do not challenge classical laws of genetics
4) Changes caused by methylation of DNA do not challenge Mendel’s laws of inheritance.
Ans: 1
34. What is the largest constituent of potato ?
1) Protein
2) Carbohydrate
3) VitaminA
4) Minerals
Ans: 2
35. Plants growing in dry habitat are called __________ .
(A) Xerophytes (B) Lithophytes (C) Mesophytes (D) Crysophytes
Ans: A
36. The study of fossil is known as __________ .
(A) Osteology (B) Histology (C) Mycology (D) Palaentology
Ans: D
37. The loss of water in liquid form from the leaves of plants is __________ .
(A) Transpiration (B) Guttation (C) Evaporation (D) Translocation
Ans: B
38. Which of the following set is the pyramidines present in RNA ?
(A) Uracil and Cytosine (B) Adenine and Uracil
(C) Guanine and Uracil (D) Thymine and Uracil
Ans: A