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Evolution Test - 26

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Evolution Test - 26
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  • Question 1
    1 / -0
    Which of the following is known as living fossil?
    Solution
    Latimeria is a genus of West Indian Ocean coelacanth (Latimeria chalumnae) and Indonesian coelacanth (Latimeria menadoensis). Living fossil is a living species or clade of an organism that appears to be similar to a species otherwise known only from fossils. Latimeria is one such living fossil.
    Thus, the correct answer is option A.
  • Question 2
    1 / -0
    Archeopteryx, a transitional fossil between birds and reptiles was discovered from the rocks of following period
    Solution
    Archaeopteryx, intermediate between reptiles and birds, originated towards the close of Jurassic period.
    So, the correct option is 'Jurassic'.
  • Question 3
    1 / -0
    Hardy and weinberg principle explains _________________.
  • Question 4
    1 / -0
    Hardy-Weinberg equilibrium operates in absence of 
    Solution
    • The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. 
    • It operates in the absence of mutation, natural selection, and recombination.

    So, the correct answer is 'All of the above'.
  • Question 5
    1 / -0
    Which one of the following option gives one correct example each of convergent evolution and divergent evolution?
    Solution
    Divergent evolution : Bones of forelimbs of vertebrate Convergent evolution : Eyes of octopus and mammals.
    Divergent evolution means similar organs have same structural plan and found in similar organisms, diverge along different evolutionary lines and Convergent evolution means organisms with different ancestry converge together due to similar environment or habitat and evolve similar organs.
    So, the correct answer is 'convergent evolution:eyes of octopus and mammals; divergent evolution:bones of forelimbs of vertebrates
  • Question 6
    1 / -0
    The first animals to fly were
    Solution
    The first animals to evolve flight were insects. The earliest fossil insects with wings are dragonfly-like animals from the Carboniferous, but there are some very fragmentary insect remains from Devonian rocks in Scotland. The fossils tell that the flight first evolved in insects approximately 410 million years ago.
    So, the correct answer is 'Insects'
  • Question 7
    1 / -0
    In which era reptiles were dominated : -
    Solution
    Mesozoic era is the era during which reptiles were dominant. It includes three periods: Triassic (240 million years ago), Jurassic (195 million years ago) and Cretaceous (135 million years ago). Origin of dinosaurs occurred during the triassic period. During the Jurassic period, lizards, crocodiles and alligators originated. Dinosaurs became large and reptiles were dominant during this period. During the cretaceous period, dinosaurs got extinct.

    So, the correct answer is 'Mesozoic era'.
  • Question 8
    1 / -0
    Homo sapiens have evolved in :
    Solution
    The first Homo sapiens have evolved in the Pleistocene Epoch. This time period began about 2.6 million years ago and lasted till 1,700 years ago. By the end of this period, the Homo sapiens were present all over the world.
    Thus, the correct answer is 'Pleistocene.'
  • Question 9
    1 / -0

    Assertion : Cro - magnon man has more intelligence than the man of present time.

    Reason : He is regarded as most recent ancestor of today's man.

    Solution
    Dryopithecus africanus lived about 20 to 25 million years ago. It had frontly broadened jaws, semierect posture and large canines. It was without browridges. It was arboreal. Although it was ape like but had arms and legs of the same length. Dryopithecus africanus is regarded as a common ancestor of man and great apes (orangutan, chimpanzee and gorilla). In late Miocene epoch Dryopithecus gave rise to Ramapithecus.
  • Question 10
    1 / -0
    To study the evolutionary kingdoms one of the following will be very useful.
    Solution
    Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. The study of fossils across geological time, how they were formed, and the evolutionary relationships between taxa (phylogeny) are some of the most important functions of the science of paleontology. A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. Animals exhibiting characters of two adjacent taxonomic groups are called connecting links. They afford very good evidences of organic evolution. 
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