

Class-12 Biology Ch-7 Evolution MCQs Exam 2027 Details: नीचे दिए गए सभी Questions Bihar Board परीक्षा 2027 के लिए “Very Very Important Multiple Choice Questions (MCQs) Objective” (अत्यंत महत्वपूर्ण प्रश्न) हैं। इन सभी Class 12th Biology /जीवविज्ञान ) = जीवविज्ञान भाग-1 (English Medium) Book Chapter-7 Evolution का Questions का Solve का वीडियो Youtube और Website पर Upload किया है।

Where were Darwin’s Finches found? [2016A]
(A) In India
(B) In Africa
(C) In Galapagos Island Group
(D) In Australia
The cranial capacity of Java Ape-man was: [2023A]
(A) 900 c.c.
(B) 1075 c.c.
(C) 1450 c.c.
(D) 1660 c.c.
Which is considered as the ‘Connecting link’ between birds and reptiles? [2020A]
(A) Dodo
(B) Archaeopteryx
(C) Platypus
(D) Peripatus
The theory of origin of life was proposed by: [2018A]
(A) Oparin
(B) Haldane
(C) Miller
(D) None of these
What do Homologous organs exhibit? [2022A]
(A) Convergent evolution
(B) Divergent Evolution
(C) Parallel evolution
(D) None of these
Paleontological evidence is based on the study of: [2024A]
(A) Embryonic development
(B) Comparative anatomy
(C) Fossils
(D) Divergent evolution
Human beings belong to which Order and which Family? [2020A]
(A) Anthropoidea and Pongidae
(B) Primates and Pongidae
(C) Primates and Hominidae
(D) None of these
Which of the following was absent in Miller’s experiment? [2021A]
(A) $CH_4$
(B) $NH_3$
(C) $O_2$
(D) $H_2$
During which period were Dinosaurs present?
(A) Paleozoic era
(B) Precambrian era
(C) Cenozoic era
(D) Mesozoic era
Who wrote the book ‘Origin of Species’? [2015A]
(A) Charles Darwin
(B) Lamarck
(C) Oparin
(D) Wallace
The First living organisms were: [2015A]
(A) Autotrophs
(B) Chemoheterotrophs
(C) Photoautotrophs
(D) None of these
What was the cranial capacity of Homo habilis? [2022A]
(A) 650-800 c.c.
(B) 900 c.c.
(C) 1400 c.c.
(D) 1660 c.c.
Dodo is a/an: [2021A]
(A) Extinct species
(B) Endangered species
(C) Threatened species
(D) None of these
Which gases were used by Stanley Miller in his experiment?
(A) $CH_4, NH_3, H_2, H_2O$
(B) $CO_2, NH_3, H_2, H_2O$
(C) $CH_4, N_2, H_2, O_2$
(D) $CH_4, CO_2, N_2, H_2O$
Dryopithecus was more similar to: [2020A]
(A) Apes
(B) Gorilla
(C) Chimpanzee
(D) Humans
‘Genetic Drift’ brings changes in which population? [2021A]
(A) Large population
(B) Small population
(C) Island population
(D) Both (B) and (C)
Who first gave the idea of ‘Survival of the fittest’? [2023A]
(A) Darwin
(B) Herbert Spencer
(C) Lamarck
(D) Hugo de Vries
Fossils are generally found in: [2020A]
(A) Metamorphic rock
(B) Igneous rock
(C) Sedimentary rock
(D) All of these
What is the scientific name of modern man? [2016A]
(A) Homo habilis
(B) Homo erectus
(C) Homo sapiens
(D) None of these
Who gave the theory of Mutation? [2019A]
(A) Charles Darwin
(B) Hugo de Vries
(C) Lamarck
(D) Beadle and Tatum
Coacervates were experimentally produced by:
(A) Oparin and Sidney Fox
(B) Miller and Harold
(C) Oparin and Haldane
(D) Urey and Miller
The age of human evolution is measured by: [2022A]
(A) UV radiation
(B) Carbon dating
(C) Chemical reaction
(D) Radioactive dating
In which book did Oparin and Haldane present their views? [2017A]
(A) Genetics and Origin of Species
(B) Origin of Life
(C) Philosophie Zoologique
(D) None of these
Darwin’s Finches represent which evidence? [2015A]
(A) Embryological evidence
(B) Fossil evidence
(C) Biogeographical distribution
(D) All of these
In “Population Genetics”, which equation represents genetic equilibrium?
(A) $(p+q)^2 = p^2 + 2pq + q^2$
(B) $(p+q)^2 = p^2 + q^2$
(C) $p+q = 2pq$
(D) None
Adaptive radiation of Australian marsupials is an example of: [2018A]
(A) Divergent evolution
(B) Convergent evolution (Note: When comparing to placental mammals)
(C) Saltation
(D) None of these
In which Era did the origin of life occur? [2020A]
(A) Pre-cambrian
(B) Proterozoic
(C) Mesozoic
(D) Cenozoic
The cranial capacity of Homo sapiens is:
(A) 1400-1600 c.c.
(B) 500 c.c.
(C) 800-1000 c.c.
(D) 650-800 c.c.
Echidna is: [2021A]
(A) Connecting link
(B) Vestigial organ
(C) Extinct link
(D) None of these
Flippers of Penguin and Dolphin are examples of:
(A) Homologous organs
(B) Convergent evolution
(C) Natural selection
(D) None of these
Paleontology is the study of: [2019A]
(A) Birds
(B) Fossils
(C) Plants
(D) Animals
In which era did the first mammal appear? [2023A]
(A) Permian
(B) Triassic
(C) Tertiary
(D) None of these
Why were ‘electrodes’ used in Miller’s experiment?
(A) To create lightning conditions
(B) To heat the mixture
(C) To create oxygen
(D) To stir the gases
Analogous structures show: [2024A]
(A) Divergent evolution
(B) Convergent evolution
(C) Parallel evolution
(D) Saltation
Dinosaurs are: [2022A]
(A) Living reptiles
(B) Extinct reptiles
(C) Primitive reptiles
(D) Extinct amphibians
The cranial capacity of Neanderthal man was:
(A) 650 c.c.
(B) 900 c.c.
(C) 1500 c.c.
(D) 1400 c.c.
When did the first cellular form of life probably appear?
(A) 2000 million years ago
(B) 2000 billion years ago
(C) 4500 million years ago
(D) 4.5 billion years ago
The book ‘Philosophie Zoologique’ was written by: [2018A]
(A) Darwin
(B) Lamarck
(C) Mendel
(D) Hugo de Vries
Examples of Divergent evolution are:
(A) Forelimbs of whale, bat and humans
(B) Wings of birds and butterfly
(C) Potato and Sweet potato
(D) All of the above
At which level is natural selection carried out to develop desired traits? [2024A]
(A) Individual level
(B) Population level
(C) Community level
(D) Ecological level
When did dinosaurs become extinct from Earth?
(A) 200 mya
(B) 65 mya
(C) 25 mya
(D) 500 mya
Directional change in Hardy-Weinberg equilibrium is—
(A) Gene flow
(B) Mutation
(C) Genetic drift
(D) Gene recombination
What was the atmosphere of Earth like at the time of origin of life? [2017A]
(A) Oxidising
(B) Reducing
(C) Neutral
(D) None of these
Industrial melanism is an example of:
(A) Stabilizing selection
(B) Directional selection
(C) Disruptive selection
(D) Genetic drift
What is the ‘Nictitating membrane’ found in humans?
(A) Functional organ
(B) Vestigial organ
(C) Homologous organ
(D) None of these
Chemical evolution occurred before biological evolution; who gave this concept? [2019A]
(A) A.I. Oparin and J.B.S. Haldane
(B) Charles Darwin
(C) Baptiste Lamarck
(D) Arrhenius
During which period were dinosaurs in their golden age? [2022A]
(A) Jurassic
(B) Triassic
(C) Cretaceous
(D) Permian
An example of ‘Retrogressive’ evolution is:
(A) Humans
(B) Monkey
(C) Herdmania
(D) Bird
Which is common for whale, seal and shark?
(A) Convergent evolution
(B) Homeothermy
(C) Seasonal migration
(D) Thick subcutaneous fat
S.L. Miller is related to: [2018A]
(A) Origin and evolution of life
(B) Use and disuse of organs
(C) Neo-Darwinism
(D) Neo-Lamarckism
Direct ancestor of man who made stone weapons and tools:
(A) Ramapithecus
(B) Australopithecus
(C) Homo habilis
(D) Homo erectus
What were ‘Coacervates’?
(A) Colloidal bodies of proteins
(B) Nucleic acids
(C) Bacteria
(D) Fungi
Primates that existed 15 million years ago:
(A) Homo habilis
(B) Australopithecus
(C) Ramapithecus
(D) Homo erectus
Which of the following is not a vestigial organ in humans?
(A) Nictitating membrane
(B) Tail vertebrae
(C) Vermiform appendix
(D) Nails
The main source of variation is: [2022A]
(A) Mutation
(B) Meiosis
(C) Fertilization
(D) Pollination
The first organism formed on Earth was:
(A) Cyanobacterium
(B) Chemoheterotrophs
(C) Autotrophs
(D) Photoautotrophs
The Big-Bang theory explains—
(A) Origin of the Universe
(B) Origin of Man
(C) Origin of Vertebrates
(D) Origin of Horse
Wings of birds and butterfly are what kind of organs? [2020A]
(A) Atavistic organs
(B) Vestigial organs
(C) Homologous organs
(D) Analogous organs
Who is the closest ancestor of Modern Man? [2016A]
(A) Java man
(B) Cro-Magnon man
(C) Neanderthal man
(D) Australopithecus
Ecologically, the most successful species is:
(A) Homo habilis
(B) Homo sapiens
(C) Homo erectus
(D) None of these
Sweet potato and Potato show:
(A) Analogous structures
(B) Divergent evolution
(C) Same ancestry
(D) Only A and C
Human hands, Bat wings and Whale flippers represent: [2018A]
(A) Homologous organs
(B) Analogous organs
(C) Vestigial organs
(D) Parallel evolution
Which is the Golden Age of Reptiles?
(A) Proterozoic era
(B) Paleozoic era
(C) Mesozoic era
(D) Cenozoic era
On which ship did Darwin make his sea voyage? [2016A]
(A) HMS Beagle
(B) Titanic
(C) D. Frog
(D) None of these
Ontogeny repeats phylogeny is known as—
(A) Ontogenesis
(B) Phylogenesis
(C) Recapitulation theory
(D) Paleontology
Who gave the modern theory of origin of life?
(A) Oparin and Haldane
(B) Miller and Fox
(C) Darwin and Lamarck
(D) None of these
According to Darwin, what was the main reason for ‘Adaptive Radiation’? [2022A]
(A) Change in temperature
(B) Competition and availability of food
(C) Protection from predators
(D) Search for new habitats
Protopterus is a connecting link between: [2021A]
(A) Fishes and Amphibians
(B) Reptiles and Birds
(C) Amphibians and Reptiles
(D) Reptiles and Mammals
Industrial melanism is a phenomenon of:
(A) Geographical isolation
(B) Reproductive isolation
(C) Natural selection
(D) Artificial selection
According to Hardy-Weinberg principle, if the sum total of factors remains constant in a population, it is called? [2023A]
(A) Genetic equilibrium
(B) Mutation
(C) Gene flow
(D) Genetic drift
The golden age of Amphibians was in which period?
(A) Carboniferous
(B) Silurian
(C) Ordovician
(D) Cambrian
When were prehistoric cave-art created? [2024A]
(A) 18,000 years ago
(B) 10,000 years ago
(C) 75,000 years ago
(D) 40,000 years ago
What is the smallest unit of Evolution?
(A) Individual
(B) Species
(C) Population
(D) Community
The correct sequence of ancestors in relation to human evolution is:
(A) Ramapithecus $\to$ Homo erectus $\to$ Australopithecus
(B) Ramapithecus $\to$ Australopithecus $\to$ Homo erectus
(C) Homo erectus $\to$ Australopithecus $\to$ Cro-Magnon man
(D) Ramapithecus $\to$ Modern Man $\to$ Australopithecus
Which theory is based on ‘Inheritance of acquired characters’? [2014A]
(A) Darwinism
(B) Lamarckism
(C) Mutation theory
(D) Modern synthetic theory
Before origin of life, Earth’s atmosphere was made of which gas mixture?
(A) $CH_4, O_2, O_3, NH_3$
(B) $CH_4, NH_3, H_2$ & Water vapour
(C) $CH_4, NH_3, CO_2, H_2$
(D) $H_2, CO_2, H_2O, NH_3$
Who developed the Fingerprinting technique? [2017A]
(A) Alec Jeffreys
(B) Wilson
(C) Watson
(D) Mendel
Which human ancestor came after the Paleolithic era?
(A) Homo erectus
(B) Neanderthal man
(C) Cro-Magnon man
(D) Australopithecus
Which of the following plays a major role in evolution? [2019A]
(A) Genetic recombination
(B) Mutation
(C) Natural selection
(D) All of these
Analogous organs are: [2024A]
(A) Similar in function
(B) Similar in structure
(C) Similar in origin
(D) Similar in both structure and function
In which epoch was there more radiation in mammals and birds?
(A) Oligocene
(B) Eocene
(C) Pliocene
(D) Paleocene
What gives the most clear evidence of evolution?
(A) Fossils
(B) Vestigial organs
(C) Embryo
(D) Morphology
Which of the following is the most solid evidence of evolution? [2023A]
(A) Vestigial organs
(B) Homologous organs
(C) Fossils
(D) Embryonic development
Miller-Urey experiment demonstrated:
(A) Chemical evolution
(B) Panspermia
(C) Spontaneous generation
(D) None of these
The modern theory of origin of life is based on:
(A) Spontaneous generation
(B) Biogenesis
(C) Chemical evolution
(D) Cosmozoic theory
Darwin’s Finches are an example of:
(A) Adaptive radiation
(B) Natural selection
(C) Divergent evolution
(D) All of these
Which is called the Devonian period?
(A) Age of Fishes
(B) Age of Amphibians
(C) Age of Reptiles
(D) Age of Mammals
Which is an amazing change in the history of Homo sapiens?
(A) Loss of body hair
(B) Upright walking
(C) Smaller jaws
(D) Increase in brain size
Paleontology for evolution is related to:
(A) Embryonic development
(B) Homologous organs
(C) Fossils
(D) Analogous organs
Which of the following is an example of convergent evolution?
(A) Eyes of Ostrich and Mammals
(B) Wings of butterfly and birds
(C) Flippers of Penguin and Dolphin
(D) All of these
Which of the following is responsible for pneumonia in humans? [2026]
(A) Streptococcus pneumoniae
(B) Salmonella
(C) Haemophilus influenzae
(D) Both (A) and (C)
What type of organism is the pathogen responsible for malaria? [2026]
(A) Virus
(B) Bacteria
(C) Protozoa
(D) Nematode
Which of the following diseases is/are transmitted by insect vectors? [2026]
(A) Typhoid
(B) Malaria
(C) Filaria
(D) Both (B) and (C)
What kind of barrier is the interferon secreted by virus-infected cells? [2026]
(A) Cytokine barrier
(B) Physical barrier
(C) Cellular barrier
(D) Physiological barrier
Which of the following cells are responsible for humoral immune response? [2026]
(A) B-lymphocytes
(B) T-lymphocytes
(C) Killer lymphocytes
(D) Macrophages
What is taken by the patient to stop graft rejection? [2026]
(A) Immunosuppressant
(B) Vaccine
(C) Introduction of readymade antibodies
(D) All of these
Which of the following are primary lymphoid organs? [2026]
(A) Bone marrow and tonsils
(B) Bone marrow and thymus
(C) Lymph nodes
(D) Thymus and lymph nodes
Which of the following viruses has reverse transcriptase enzyme? [2026]
(A) TMV
(B) Bacteriophage
(C) HIV
(D) All of these
Which of the following drugs interferes with the transport of dopamine? [2026]
(A) Nicotine
(B) Hashish
(C) Morphine
(D) Cocaine
AIDS is caused by: [2015A]
(A) Increase in helper T-cells
(B) Decrease in helper T-cells
(C) Bacterial infection
(D) None of these
Opium is obtained from: [2019A]
(A) Cannabis sativa
(B) Papaver somniferum
(C) Atropa belladonna
(D) Erythroxylum coca
Which disease is caused by protozoa? [2022A]
(A) Influenza
(B) Cancer
(C) Amoebiasis
(D) Cholera
The causative agent of Elephantiases is: [2017A]
(A) Ascaris
(B) Wuchereria bancrofti
(C) Entamoeba
(D) None of these
Antibodies are: [2021A]
(A) Lipids
(B) Carbohydrates
(C) Glycoproteins
(D) None of these
Widal Test is done to confirm: [2016A]
(A) Malaria
(B) Typhoid
(C) AIDS
(D) Cancer
Which is used for treatment of cancer? [2020A]
(A) Physiotherapy
(B) Chemotherapy
(C) Psychotherapy
(D) All of these
Which of the following is a viral disease? [2015A]
(A) Flu
(B) Polio
(C) AIDS
(D) All of these
The main cause of drug addiction is: [2022A]
(A) Curiosity
(B) Desire for pleasure
(C) Mental stress
(D) All of these
Vaccination protects a person because it: [2021A]
(A) Improves digestion
(B) Increases RBC
(C) Produces antibodies
(D) None of these
Where are B-cells produced? [2019A]
(A) Thymus
(B) Bone marrow
(C) Liver
(D) Spleen
The main cause of Cirrhosis is: [2020A]
(A) Cocaine
(B) Alcohol
(C) Tobacco
(D) Bhang
T-lymphocytes are produced in: [2017A]
(A) Thymus
(B) Stomach
(C) Bone marrow
(D) None of these
Which hormone secretion increases during Puberty? [2024A]
(A) Testosterone
(B) Estrogen
(C) Both (A) and (B)
(D) None of these
The main infective stage of Malaria parasite is: [2016A]
(A) Sporozoite
(B) Merozoite
(C) Trophozoite
(D) None of these
ELISA test is done to detect: [2018A]
(A) Cancer
(B) AIDS
(C) Leprosy
(D) Typhoid
Interferon is synthesized against: [2019A]
(A) Bacteria
(B) Virus
(C) Fungi
(D) Protozoa
Alcohol consumption most affects which organ? [2015A]
(A) Heart
(B) Lung
(C) Liver
(D) Kidney
The study of cancer is called: [2021A]
(A) Cytology
(B) Oncology
(C) Histology
(D) None of these
Common Cold is caused by: [2023A]
(A) Rhino virus
(B) TMV
(C) Salmonella
(D) None of these
Which vitamin content increases when milk converts to curd? [2026]
(A) Vitamin A
(B) Vitamin $B_2$
(C) Vitamin C
(D) Vitamin $B_{12}$
Which is the blood cholesterol lowering agent? [2026]
(A) Statin
(B) Cyclosporin-A
(C) Antibiotic
(D) Streptokinase
Which pair is incorrect? [2026]
(A) Cyclosporin-A — From fungus
(B) Statin — From yeast
(C) Streptokinase — From bacteria
(D) Butyric acid — From fungus
Which cyanobacteria fixes atmospheric nitrogen? [2026]
(A) Nostoc
(B) Anabaena
(C) Oscillatoria
(D) All of these
Butterfly caterpillars are controlled using: [2026]
(A) Pseudomonas
(B) Trichoderma
(C) Bacillus thuringiensis
(D) Baculovirus
What is Acetabularia? [2014A]
(A) Single cell algae
(B) Protozoa
(C) Bacteria
(D) Fungi
Who discovered Penicillin? [2018A]
(A) Louis Pasteur
(B) Alexander Fleming
(C) Robert Koch
(D) None of these
First antibiotic made by fermentation was: [2023A]
(A) Terramycin
(B) Erythromycin
(C) Penicillin
(D) Neomycin
Biogas mainly contains: [2022A]
(A) $CO_2$
(B) $H_2$
(C) $CH_4$ (Methane)
(D) $N_2$
Which helps in increasing soil fertility? [2020A]
(A) Pesticide
(B) Biofertilizers
(C) Chemical fertilizer
(D) None of these
Toddy is made from the sap of: [2024A]
(A) Palm
(B) Coconut
(C) Bamboo
(D) Mango
Wine and Beer are produced with the help of: [2022A]
(A) Bacteria
(B) Yeast
(C) Fungi
(D) Algae
Plant breeding is used for: [2026]
(A) Disease resistance
(B) Improved quality
(C) Increased yield
(D) All of these
Modern theory of origin of life is based on:
(A) Spontaneous generation
(B) Biogenesis
(C) Chemical evolution
(D) Panspermia
First mammal appeared in: [2023A]
(A) Permian
(B) Triassic
(C) Tertiary
(D) None of these
Cranial capacity of Neanderthal man was:
(A) 650 c.c.
(B) 900 c.c.
(C) 1500 c.c.
(D) 1400 c.c.
Dinosaurs were in golden age during: [2022A]
(A) Jurassic
(B) Triassic
(C) Cretaceous
(D) Permian
The first organism formed on Earth was:
(A) Cyanobacterium
(B) Chemoheterotrophs
(C) Autotrophs
(D) Photoautotrophs
Big-Bang theory explains:
(A) Origin of Universe
(B) Origin of Man
(C) Origin of Vertebrates
(D) Origin of Horse
Wings of bird and butterfly are: [2020A]
(A) Atavistic organs
(B) Vestigial organs
(C) Homologous organs
(D) Analogous organs
Closest ancestor of modern man: [2016A]
(A) Java man
(B) Cro-Magnon man
(C) Neanderthal man
(D) Australopithecus
Golden age of reptiles:
(A) Proterozoic
(B) Paleozoic
(C) Mesozoic
(D) Cenozoic
Darwin’s ship was: [2016A]
(A) HMS Beagle
(B) Titanic
(C) D. Frog
(D) None of these
Prehistoric cave art dates back to: [2024A]
(A) 18,000 years ago
(B) 10,000 years ago
(C) 75,000 years ago
(D) 40,000 years ago
DNA Fingerprinting was developed by: [2017A]
(A) Alec Jeffreys
(B) Wilson
(C) Watson
(D) Mendel
Most solid evidence of evolution: [2023A]
(A) Vestigial organs
(B) Homologous organs
(C) Fossils
(D) Embryonic development
| Q. No. | Ans. | Q. No. | Ans. | Q. No. | Ans. | Q. No. | Ans. |
| 91 | (D) | 105 | (B) | 119 | (A) | 133 | (C) |
| 92 | (C) | 106 | (B) | 120 | (D) | 134 | (B) |
| 93 | (D) | 107 | (D) | 121 | (A) | 135 | (D) |
| 94 | (A) | 108 | (D) | 122 | (D) | 136 | (A) |
| 95 | (A) | 109 | (C) | 123 | (D) | 137 | (B) |
| 96 | (A) | 110 | (B) | 124 | (C) | 138 | (A) |
| 97 | (B) | 111 | (B) | 125 | (A) | 139 | (D) |
| 98 | (C) | 112 | (C) | 126 | (B) | 140 | (B) |
| 99 | (D) | 113 | (C) | 127 | (C) | 141 | (C) |
| 100 | (B) | 114 | (A) | 128 | (C) | 142 | (A) |
| 101 | (B) | 115 | (B) | 129 | (B) | 143 | (A) |
| 102 | (C) | 116 | (B) | 130 | (A) | 144 | (A) |
| 103 | (B) | 117 | (C) | 131 | (B) | 145 | (C) |
| 104 | (C) | 118 | (B) | 132 | (D) |
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