Biology Objective Question 2022 |
1. What is the importance of Euchromatinof chromosome?
(a) Genetically active inactive
(b) Neutral
(c) Genetically inactive
(d) Both (b) and (c)
Ans:- (d)
2. Jim Corbett National Park is famour for
(a) Rhino
(b) Lion
(c) Tiger
(d) Black-duck
Ans:- (c)
3. Hybrid Vigour is due to which event in the following?
(a) Crossing over
(b) Chiasma
(c) Homozygosity
(d) Heterozygosity
Ans:- (d)
4. Which of the following is the vestigial organ of human ?
(a) Thumb
(b) Pinna
(c) Coccyx
(d) Pelvic
Ans:- (b) and (c)
5. Haemochorial placenta is found in which of the following ?
(a) Rabbit
(b) Human being
(c) Horse
(d) All of these
Ans:- (b)
6. Which pollinator is not attracted by scent of a flower?
(a) Moth
(b) Butterfly
(c) Bird
(d) Bat
Ans:- (c)
7. An example of the quantitative trait in man is
(a) Colour of eye
(b) Skin colour
(c) Hair colour
(d) Shape of nose
Ans:- (b)
8. The agent that tends to produce cancer is called as –
(a) Carcinoma
(b) Carcinogen
(c) Oncogene
(d) Metastasis
Ans:- (b)
9. How many types of nucleic acid are there?
(a) 1
(b) 2
(c) 3
(d) 4
Ans:- (d)
10. The first trophic level in a recosystem consists of –
(a) Primary producers
(b) Secondary producers
(c) Primary consumers
(d) Secondary consumers
Ans:- (a)
11. Name the cellular genes which when activated can cause cancer?
(a) Oncogenes
(b) Proto-oncogenes
(c) Both (a) and (b)
(d) Silent genes
Ans:- (a)
12. Gene gun can introduce genes into cells with the help of –
(a) Plasmids
(b) Cosmids
(c) Phagemids
(d) Microscopic pellets
Ans:- (d)
13. Flavr Savr is a genetically modified
(a) Rice
(b) Cotton
(c) potato
(d) Tomato
Ans:- (d)
14. The upright pyramid of number is absent in which of the following ?
(a) Forest
(b) Grassland
(c) Lake
(d) Pond
(b) Grassland
Ans:- (a)
15. Which is not recycled in ecosystem?
(a) Oxygen
(b) Nitrogen
(c) Water
(d) Energy
Ans:- (d)
16. Spermatozoa which are not ejaculated are reabsorbed in the –
(a) Scrotum
(b) Vas efferens
(c) Vasdeferens
(d) Ejaculatory duct
Ans:- (c)
17. Connective issues are derived from which embryonic layer ?
(a) Ectoderm
(b) Mesoderm
(c) Endo- Mesoderm
(d) Endoderm
Ans:- (b)
18. X-chromosome is
(a) Acentric
(b) Acrocentric
(c) Metacentrie
(d) Telocentric
Ans:-(c)
19. Allosomes are the name of which among the following?
(a) Autosomes
(b) Sex chromosomes
(c) Swelling on the chromosome
(d) Kinelichore
Ans:-(b)
20. Endogamy is found in which of the following?
(a) Plastm
(b) Planaria
(c) taenia
(d) Hydra
Ans:-(c)
21. Oestrus cycle occurs in which of the following?
(a) Man
(b) Monkey
(c) Cow
(d) All of these
Ans:-(c)
22. Ranthambore National Park is located in-
(a)Gujarat
(b) Rajasthan
(c) Uttar Pradesh
(d) Madhya Pradesh
Ans:-(b)
23. Which one is an endemic plan ?
(a) Ricets discolor
(b) Marchantis polymorpha
(c) cynodon dactylon
(d) Nepenthes khasiana
Ans:-(d)
24. Extrachromosomal DNA used as vector in gene cloning is –
(a) Transposon
(b) Intron
(c) Plasmid
(d) Exon
Ans:-(c)
25. Ti-plasmid transforms cells of which of the following?
(a) Bacteria
(b) Vine
(c) Plants
(d) Animals
Ans:-(c)
26. Polymerase chain reaction is useful in
(a) Protein synthesis
(b) Amino acid synthesis
(c) DNA synthesis
(d) DNA amplification
Ans:-(d)
27. Tendrils of Cucurbita and thorns of Bougainvillea are –
(a) Homologous organs
(b) Vestigial organs
(c) Analogous organs
(d) Both (a) and (b)
Ans:-(a)
28. Darwin’s finches show –
(a) Natural selection
(b) Parallel evolution
(c) Homology
(d) Adaptive radiation
Ans:-(d)
29. Archaeopterys, fossil bird is connecting link between
(a) Amphibians and Reptiles
(b) Reptiles and Birds
(c) Amphibians and Birds
(d) Fishes and Amphibians
Ans:-(b)
30. A dihybrid condition is
(a) Ttrr
(b) ttRr
(c) TtRr
(d) TtRr
Ans:-(c)
31. Different forms of a gene are called
(a) Complementary genes
(b) Heterozygotes
(c) Supplementary genes
(d) Allele.
Ans:-(b)
32. Tapetal cells show-
(a) A Mitotic division
(b) Meiotic division
(c) Endomitosis division
(d) Endomitosis and polyploidy
Ans:-(c)
33. Embryo sac is formed by-
(a) Magaspore
(b) Megasporangium
(c) Female gametophyte
(d) Female gamete
Ans:-(a)
34. Which one is present on transfer RNA?
(a) Initiation codon
(b) Degenerate codon
(c) Termination codon
(d) Anti codon
Ans:-(d)
35. Reverse transcriptase is —
(a) RNA dependent DNA polymerase enzyme
(b) DNA dependent DNA polymerase enzyme
(c) RNA dependent RNA polymerase enzyme
(d) DNA dependent RNA polymerase enzyme
Ans:-(a)
36. A gene of operon which forms the repressor protein is called?
(a) Operator gene
(b) Promoter gene
(c) Regulator gene
(d) Structural gene
Ans:-(c)
37. Toxin produced by tetanus affects –
(a) Jaw bones
(b) Voluntary muscles
(c) Involuntary muscles
(d) Both (b) and (c)
Ans:-(b)
38. AIDS virus possesses
(a) Single strand RNA
(b) Double strand RNA
(c) Single strand DNA
(d) Double strand DNA
Ans:-(a)
39. Addiction to tobacco is caused by
(a) Caffeine
(b) Cocaine
(c) Histamine
(d) Nicotine
Ans:-(d)
40. Domestic waste constitutes which type of pollution?
(a) Air pollution
(b) Effluents
(c) Biodegradable pollution
(d) Non biodegradable pollution
Ans:-(c)
41. Common indicator organism of water pollution in the following is –
(a) Cholera vibrio
(b) Eschericia coli
(c) Salmonella typhi
(d) Entamoeba histolytica
Ans:-(b)
42. Bombay Duck is
(a) Prawn
(b) Fish
(c) Aquatic bird
(d) Marine snail
Ans:-(b)
43. Shakti, Rattan and Protina are lysine rich varieties of which of the following?
(a) Rice
(b) Wheat
(c) Cotton
(d) Maize
Ans:-(d)
44. Bull’s semen is stored in –
(a) Liquid Nitrogen
(b) Liquid Carbon-dioxide
(c) Ice
(d) None of these
Ans:-(a)
45. Protein in silk thread is —
(a) Keratin
(b) Albumin
(c) Fibroin
(d) Both (b) and (c)
Ans:-(c)
46. Leydig cells secrete
(a) Testosterone
(b) Progesterone
(c) Oestrogens
(d) Corticosterone
Ans:-(a)
47. Oral contraceptive is composed of which of the following combination?
(a) Estrogen and growth hormone
(b) Progesterone and testosterone
(c) Estrogen and testosterone
(d) Estrogen and progesterone
Ans:-(d)
48. Lagging strand during DNA replication is formed
(a) Continuously
(c) In short segments
(b) Discontinuously
(d) Both (b) and (c)
Ans:-(c)
49. Frameshift mutation occurs when
(a) Base in deleted or added
(b) Base is added
(c) Base is deleted
(d) Phosphate is added
Ans:-(c)
50. Wobble hypothesis was proposed by –
(a) Crick
(b) Nuremberg
(c) Holley
(d) Khorana
Ans:-(a)
51. Which one cause degradation of RBC?
(a) Arsenic compounds
(b) Hydrocarbons
(c) Ammonia
(d) Sulphur compounds
Ans:-(a)
52. Water blooms are formed by
(a) Hydrilla
(b) Water hyacinth
(c) Trapa
(d) Planktonic algae
Ans:-(d)
53. Formation of soil takes place by the process of
(a) Melting
(b) Weathering
(c) Pedogenesis
(d) Both (b) and (c)
Ans:-(d)
54. A characteristic feature of hydrophytes is –
(a) Floating leaves
(b) Aerenchyma
(c) Submerged leaves
(d) Well developed phloem
Ans:-(b)
55. Fungal hyphae remain intercellular in
(a) Ectomycorrhiza
(b) VAM
(c) Endomycorrhiza
(d) None of these
Ans:-(c)
56. Pleiotropic gene shows which type of phenotype?
(a) Multiple genotype
(b) Multiple phenotype
(c) Single genotype
(d) Singe phenotype
Ans:-(b)
57. Heterozygous organism for two genes in the following shall be ?
(a) RRYY
(b) RrYY
(c) RRYY
(d) RrYy
Ans:-(d)
58. Which one of the National aquatic animal of India ?
(a) River Dolphin
(b) Gangetic Shark
(c) Sea Horse
(d) Blue whale
Ans:-(a)
59. Which is not included under in-situ conservation?
(a) Biosphere reserve
(b) Botanical/Zoological garden
(c) National Park
(d) Sanctuary
Ans:-(a)
60. Molecular scissor, which cut DNA at specific site is
(a) Pectinase enzyme
(b) Restriction endonuclease
(c) Polymerease enzyme
(d) Ligase enzyme
Ans:-(b)
61. Which of the following is used as vector in gene therapy for SCID?
(a) Retro virus
(b) Rota virus
(c) Arbo virus
(d) Parvo virus
Ans:-(a)
62. Which are vestigial organs in humans?
(a) Nictitating mimbrane
(b) Tail vertebrae
(c) wisdomu tooth
(d) All of these
Ans:-(d)
63. Bt cotton genes repel which of the following ?
(a) Insect pests
(b) Bactral pathogens
(c) Nematodei parasites
(d) Fungal pathogens
Ans:-(a)
64. Source of Taq polymerase used in PCR is a
(a) Themophilic fungus.
(b) Thermophilic bacterium
(c) Mesophilic fungus
(d) Halophilic bacterium
Ans:-(b)
65. Which of the following is used in production of insulin by Genetic Engineering ?
(a) Rhizobium legminosrum
(b) Escherichia coli
(c) Saccharpomyces pastoriaus
(d) Mycobacterium
Ans:-(b)
66. ‘Survival of Fittest thought was proposed by
(a) Charles Darwin
(b) Hugo de Vries
(c) Herbert Spencer
(d) Lamarck
Ans:-(c)
67. Which of th following is used as green manure/biofertilizer ?
(a) Rice
(b) Maize
(c) Oat
(d) Damcha
Ans:-(d)
68. Which of the following is a microbial insecticide?
(a) Bacillus subutilis
(b) Bacillus polymyxa
(c) Bacillus thuringiensis
(d) Bacillus brevis
Ans:-(c)
69. Which among the followingi is direct ancestor of Homo sapiens ?
(a) Ramapithecus
(b) Homo erectus
(c) Australopithecus
(d) Homo neanderthalensis
Ans:-(b)
70. The primary treatment of sewave water involves which of the following step?
(a) Aerobic bacterial activity
(b) Filtration and sedimentation
(c) Anaerobic bacterial activity
(d) Sludge digestion
Ans:-(b)