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Evolution Test - 6

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Evolution Test - 6
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following is/are not an acquired trait?
    Solution
    Eye colour is not an acquired trait, but is an inherited one. An acquired trait is a physical characteristic of an organism that is not passed down to offspring genetically. It is not coded in the organism's DNA and is a product of the environment's influence on the organism. Whereas inherited trait is a trait or character that is genetically inherited or passed down from generation to generation.
  • Question 2
    1 / -0
    Which of the following is the most essential for the origin of life?
    Solution
    Nucleic acids are the most essential for the origin of life.Nucleic acids, which include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), are made from monomers known as nucleotides.
  • Question 3
    1 / -0
    De Vries proposed the theory of organic evolution, which is based on
    Solution
    De Vries proposed the theory of organic evolution, which is based on variations due to genetic reasons.
  • Question 4
    1 / -0
    Pangenes explained by Darwin are
    Solution
    Pangenesis was Charles Darwin's hypothetical mechanism for heredity. According to it, hereditary particles are present in every organ of the body.
  • Question 5
    1 / -0
    One of the most important theories of (evolution) Biology was proposed independently by two scientists in the 19th century. These scientists were
    Solution
    Wallace and Darwin are the two scientist who have independently proposed one of the most important theories of (evolution) Biology in the 19th century.
  • Question 6
    1 / -0
    Mesozoic era is called as golden period of
    Solution
    Mesozoic era is called as golden period of reptiles.The Mesozoic Era lasted about 180 million years, and is divided into three periods, the Triassic, the Jurassic, and the Cretaceous.
  • Question 7
    1 / -0
    Which of the following is used for dating the bones?
    Solution
    Isotope of carbon, i.e. C14 is used for dating the bones. Carbon 14 is an isotope of carbon which is formed naturally in the atmosphere.
  • Question 8
    1 / -0
    Which of the following is an extinct animal?
    Solution
    Among these, Archaeopteryx is an extinct animal. It is a genus of bird-like dinosaurs that is transitional between non-avian feathered dinosaurs and modern birds.
  • Question 9
    1 / -0
    Which of the following is incorrect?
    Solution
    Wings of insects and birds are analogous organs. So, option (3) is false.
  • Question 10
    1 / -0
    Which of the following is an evidence for the origin of birds from reptiles?
    Solution
    Presence of scales is an evidence for the origin of birds from reptiles.
  • Question 11
    1 / -0
    Poison glands of snakes are homologous to
    Solution
    Poison glands of snakes are homologous to salivary glands of vertebrates.They are modification of the parotid salivary gland.
  • Question 12
    1 / -0
    Which of the following correctly describes the homologous structures?
    Solution
    Organs with anatomical similarities but performing different functions are called homologous organs.
  • Question 13
    1 / -0
    Vestigeal organs are
    Solution
    Vestigeal organs are functionless and smaller in size.Vestigiality refers to genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained through evolution.
  • Question 14
    1 / -0
    Which of the following is not a vestigial organ?
    Solution
    Among the given options, diaphragm is not a vestigial organ.The diaphragm separates the thoracic cavity containing the heart and lungs, from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases and air is drawn into the lungs.
  • Question 15
    1 / -0
    The presence of salts in animal body fluid gives the proof that the life originated in
    Solution
    The presence of salts in animal body fluid gives the proof that the life originated in sea water.
  • Question 16
    1 / -0
    Which of the following was the first to be formed during origin of life?
    Solution
    Coacervates were the first to be formed during origin of life.They are microscopic spontaneously formed spherical aggregates of lipid molecules that are held together by electrostatic forces and that may have been precursors of cells.
  • Question 17
    1 / -0
    Which of the following is a connecting link between chordates and non-chordates?
    Solution
    Balanoglossus is a connecting link between chordates and non-chordates. It has notochord in the upper part of the body and has no nerve chord.
  • Question 18
    1 / -0
    Which of the following is a living fossil?
    Solution
    Limulus is a living fossil.A living fossil is a living species (or clade) of organism that appears to be similar to a species otherwise known only from fossils, typically with no close living relatives.
  • Question 19
    1 / -0
    What is the sudden appearance of an ancestral character called?
    Solution
    Sudden appearance of an ancestral character is called atavism. An atavism is an evolutionary throwback, such as traits reappearing which had disappeared generations before.
  • Question 20
    1 / -0
    Which of the following animals is called a living fossil?
    Solution
    Among these, peripatus is a living fossil.Peripatus is an invertebrate, said to be a living fossil because the living members appear similar to fossil species as much as 570 million years old, and because the group is transitional between the Arthropoda (including crustaceans and insects) and primitive Ecdysozoa such as tardigrades, priapulids and nematodes.
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