Biology Model Paper 2022 12th |
1. All tissue can be formed from
(a) Ectoderm
(b) Endoderm
(c) Mesoderm
(d) Stem cell
Ans:-(d)
2. Astrogen and Progesterone are secreted by
(a) Ovary
(b) Testis
(c) Placenta
(d) All of the above
Ans:-(c)
3. Which one is not a part of anther wall?
(a) Endothecium
(b) Endothelium
(c) Tapetum
(d) All of the above
Ans:-(b)
4. Which of the following is true fruit ?
(a) Coconut
(b) Apple
(c) Pear
(d) Cashew
Ans:-(a)
5. Haploid chromosome number in dog is
(a) 23
(b) 39
(c) 19
(d) 4
Ans:-(b)
6. Which one does not show Oestrus cycie?
(a) Cow
(b) Sheep
(c) Monkey
(d) Dog
Ans:-(c)
7. Which one of the following is a major source of air pollution ?
(a) Industries
(b) Automobiles
(c) Burning coals
(d) All of the above
Ans:-(d)
8. Bt cotton is resistant to
(a) Insects
(b) Weeds
(c) Salts
(d) None of the above
Ans:-(a)
9. Lamarck was from
(a) India
(b) England
(c) France
(d) None of the above
Ans:-(c)
10. Which among the following is a hereditary disease
(a) Haemophilia
(b) Diabetes
(c) Cretenism
(d) All of the above
Ans:-(a)
11. Which bacteria is helpful in the formation of curd from milk?
(a) Anabena
(b) Streptococcus
(c) Lactobacillus
(d) All of the above
Ans:-(c)
12. The example of retrovirus is
(a) Plasmodium
(b) TMV
(c) HIV
(d) None of the above
Ans:-(c)
13. Spermatogenesis produces
(a) Sperm
(b) Ova
(c) Zygote
(d) None of the above
Ans:-(a)
14. Humulin term is used for
(a) Digestive enzyme
(b) Antibiotic
(d) Human insulin
(c) Chitin
Ans:-(d)
15. Pomato is a hybrid of
(a) Tomato & Cabbage
(b) Carrot and Radish
(c) Potato and Tomato
(d) None of the above
Ans:-(c)
16. The substance which causes a definite change in gene is called
(a) Mutagen
(b) Alkaloid
(c) Cytotoxin
(d) None of the above
Ans:-(a)
17. Linkage was discovered by
(a) Muller
(b) Punnet
(c) Mendel
(d) Morgan
Ans:-(d)
18. A child with mother of A group and father of AB group will not have the following blood group
(a) A
(b) B
(c) AB
(d) O
Ans:-(d)
19. The ratio 9: 7 is produced due to
(a) Complementary genes
(b) Lethal genes
(c) Epistatic genes
(d) None of the above
Ans:-(a)
20. The exposure of X-ray enhances the frequency of
(a) Linkage
(b) Segregation
(c) Crossing over
(d) None of the above
Ans:-(c)
21. Part of DNA which switch their position are called
(a) Exon
(b) Cistrons
(c) Transposons
(d) None of the above
Ans:-(c)
22. Nucleic Acids are polymers of
(a) Amino acid
(b) Nucleosides
(c) Nucleotides
(d) None of the above
Ans:-(c)
23. The lac operon consists of
(a) One structural gene
(b) Three structural gene
(c) Four structural gene
(d) None of the above
Ans:-(b)
24. The technique of DNA finger printing was initially
developed by
(a) Alec Jeffreys
(b) Griffith
(c) Mirsky
(d) None of the above
Ans:-(a)
25. In split genes, the coding sequences are called
(a) Exons
(b) Introns
(c) Cistrons
(d) Operons
Ans:-(a)
26. Vermiform appendix is a
(a) connecting link
(b) vestigial organ
(c) homologous organ
(d) None of the above
Ans:-(b)
27. Use and disuse was proposed by
(a) Darwin
(b) Haeckel
(c) Lamarck
(d) None of the above
Ans:-(c)
28. Modern man is called
(a) Neanderthals
(b) Ramapithecus
(c) Homosapiens
(d) None of the above
Ans:-(c)
29. Nervous system is influenced by
(a) Cocaine
(b) Heroine
(c) Hashish
(d) All of the above
Ans:-(d)
30. Pathogen of malaria is
(a) Aedes
(b) Wuchereria
(c) Anopheles
(d) Plasmodium
Ans:-(d)
31. The term ecology was coined by
(a) Odum
(b) Linnaeus
(c) Haeckel
(d) None of the above
Ans:-(c)
32. Organisms which can inbreed with each other come under the same
(a) Kingdom
(b) Family
(c) Species
(d) Genus
Ans:-(c)
33. In a food chain, herbivores are
(a) Primary producers
(b) Primary consumers
(c) Secondary consumers
(d) None of the above
Ans:-(b)
34. Ovulation is induced by a hormone called
(a) FSH
(b) LH
(c) Both
(d) None of the above
Ans:-(b)
35. Bamboo species flower
(a) Only one in life time
(b) Every year
(c) Once in 12 years
(d) None of the above
Ans:-(c)
36. In certain cases for early and accurate of disease we may use.
(a) ELISA
(b) Culture
(c) Chemical
(d) Analytical
Ans:-(a)
37. Tuberculosis is transmitted by
(a) Air
(b) Water
(c) Insect
(d) Contact
Ans:-(a)
38. Restriction enzymes are known as
(a) Biological guns
(b) Molecular scissors
(c) Plasmid
(d) micro pipette
Ans:-(c)
39. amp^R gene is responsible for developing resistance in
(a) Pest
(b) Insect
(c) Antibiotic
(d) Drought
Ans:-(c)
40. Taichung is a variety of
(a) Rice
(b) Wheat
(c) Maize
(d) Sugarcane
Ans:-(a)
41. For Nitrogen fixation in soil we may use
(a) Cyanobacteria
(b) Protozoans
(c) Nematodes
(d) Wheat plants
Ans:-(a)
42. Gynoecium is made up of
(a) Stigma
(b) Style
(c) Ovary
(d) All of these
Ans:-(d)
43. Who is considered as Father of Genetics ?
(a) Morgan
(b) Darwin
(c) Hugo de Vries
(d) Mendel
Ans:-(d)
44. Noise pollution is measured in
(a) Heartz
(c) Decibels
(b) Fathoms
(d) Nanometer
Ans:-(c)
45. Indicator of water pollution is
(a) Entamoeba histolytica
(b) E. Coli
(c) Vibrio cholera
(d) All of the above
Ans:-(b)
46. mRNA formation takes place in
(a) Ribosome
(b) Nucleus
(c) Cytoplasm
(d) Mitochondria
Ans:-(b)
47. Cancer affecting connective tissue is called
(a) Lymphoma
(c) Carcinoma
(b) Sarcoma
(d) None of the above
Ans:-(b)
48. IgM antibody is found in
(a) Serum
(b) Saliva
(c) Blood
(d) All of the above
Ans:-(c)
49. How many Peptide chains are found in each antibody molecule ?
(a) 4
(b) 3
(c) 2
(d) None of the above
Ans:-(a)
50. Green plants are known as producers, which convert
(a) Chemical energy into light energy.
(b) Light energy into chemical energy (c) All of the above
(d) None of the above
Ans:-(b)
51. Which of the following cry gene prevents crop from borer
(a) Cry AC
(b) Cry/Ab
(c) Cry // Ab
(d) All of the above
Ans:-(d)
52. Human blood groups are
(a) A. B. AB, O
(c) B. C. O
(b) A. B. C. O
(d) None of the above
Ans:-(a)
53. Khorana got Nobel prize for
(a) Discovery of RNA
(b) Discovery of DNA
(c) Chemical synthesis of gene
(d) None
Ans:-(c)
54. Secondary pollutant is
(a) CO
(b) CO₂
(c) PAN
(d) None of these
Ans:-(c)
55. Chipko movement is launched for protection of
(a) Grass land
(b) Forest
(c) Animal Community
(d) All of the above
Ans:-(b)
56. TT × tt is
(a) Test cross
(b) Back cross
(c) Hybridization
(d) None of the above
Ans:-(a)
57. How many types of DNA polymerases associated with eukaryotic cell ?
(a) 2.
(b) 3
(c) 4
(d) 5
Ans:-(d)
58. Example of In Situ conservation is
(a) Zoological garden
(b) Botanical garden
(c) Biological safari park
(d) All of the above
Ans:-(d)
59. Which of the following is diploid ?
(a) Male gamete
(b) Ovum
(c) Zygote
(d) All of the above:
Ans:-(c)
60. Pattern of any population depends on
(a) Density
(b) Distribution
(c) Specific structure
(d) All of the above
Ans:-(d)
61. Montreal Protocol is related to control the deleterious effect of
(a) Acid rain
(b) Ozone depletion
(c) Deforestation
(d) Global warming
Ans:-(b)
62. Fertilization takes place in
(a) Ovary
(b) Uterus
(c) Fallopian tube
(d) All of the above
Ans:-(c)
63. Hugo de-Vries worked on which plant?
(a) Pea
(b) Evening Primrose
(c) Both
(d) None
Ans:-(b)
64. Salmonella is associated with
(a) Polio
(b) T.B.
(c) Typhoid
(d) All of the above
Ans:-(c)
65. AIDS is identified first of all in
(a) USA
(b) France
(c) Russia
(d) All of the above
Ans:-(a)
66. Bones of fore limbs of Bat, and humans are
(a) Homologous
(b) Analogous
(c) Both
(d) None
Ans:-(a)
67. Which enzyme is used to join cut ends of DNA ?
(a) Ligase
(b) Cellulose
(c) Pectinase
(d) None of the above
Ans:-(a)
68. Which of the following serve as biofertilizer in paddy fields?
(a) Yeast
(b) Bacteria
(c) Cyano bacteria
(d) Fungi
Ans:-(c)
69. Which of the following is used in preparing Cheese?
(a) Viruses.
(b) Algae
(c) Fungi
(d) Micorobes
Ans:-(d )
70. Statins used for lowering blood cholesterol level are extracted from
(a) Yeast
(b) Algae
(c) Virus
(d) All of the above
Ans:-(a)