Jurassic period of Mesozoic era is characterized by
  • Dinosaurs became extinct and angiosperms appear
  • Gymnosperms were dominant plants and first birds appear
  • Flowering plants and first dinosaurs appear
  • Radiation of reptiles and origin of mammal-like reptiles
Which of the following is a connecting link between mammals and reptiles?
  • Balanoglossus
  • Archaeopteryx
  • Peripatus
  • Ornithorhynchus
The gas mixture used by Miller in his experiment comprised:
Origin-of-Life-Multiple-Choice-Questions-for-CBSE-Class-12-Biology-Topperlearning.png
  • A
  • B
  • C
  • D
Connecting link between annelids and molluscs is
  • Limulus
  • Periplaneta
  • Peripatus
  • Neopilina
Darwin's theory states that
  • Nature selects species which can adapt correct
  • Characters are acquired through inheritance
  • Affect of environment on evolution
  • Species change morphologically with nature
Which of the following is formed in Stanley Miller's classic experiment?
  • UV-radiations
  • Nucleic acids
  • Microspheres
  • Amino acids
The cranial cavity was largest among the:
  • Java ape man
  • Neanderthal man
  • Peking man
  • African man
Convergent evolution is illustrated by:
  • Bacterium and Protozoan
  • Dog fish and whale
  • Rat and dog
  • Starfish and cuttle fish
Organs that have different embryonic origin but perform similar functions are:
  • Vestigeal organs
  • Atavism
  • Homologous organs
  • Analogous organs
Ancestors of mammals belong to:
  • Therapsida
  • Chelonia
  • Ornithischia
  • Silusidea
Fossils are generally found in:
  • Any type of rock
  • Igneous rocks
  • Metamorphic rocks
  • Sedimentary rocks
Darwin travelled in which ship?
  • Titanic
  • H.M.S. Beagle
  • D. Matrica
  • H.N.S. Eagle
Animal population within which interbreeding occurs is called:
  • Class
  • Genus
  • Family
  • Species
Which one of the following is considered as common ancestor of old world monkeys, apes and man?
  • Parapithecus
  • Oligopithecus
  • Ramapithecus
  • Shivapithecus
First mammals occurred in which era period?
  • Permian - Palaeozoic
  • Triassic - Mesozoic
  • Tertiary - Coenozoic
  • None of these
Which one of the following is the most primitive ancestor of man?
  • Homo neanderthalensis
  • Australopithecus
  • Homo habilis
  • Ramapithecus punjabicus
Abiogenesis means
  • Spontaneous generation
  • Physico-chemical origin of life
  • Origin of panspermia
  • Germplasm theory
Mutation theory does not explain:
  • Mimicry
  • Connecting link
  • Origin of new species
  • Adaptive radiation
The extinct human who lived 1,00,000 to 40,000 years ago in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore head, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was:
  • Cro-magnon human
  • Homo habilis
  • Ramapithecus
  • Neanderthal human
In the case of peppered moth (Biston betularia), the black-coloured form became dominant over light-coloured form in England during industrial revolution. This is an example of:
  • aggressive mimicry
  • Natural selection whereby the darker forms were selected
  • Appearance of darker-coloured individuals due to very poor sunlight
  • Protective mimicry
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