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Diversity in Living Organisms Test - 52

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Diversity in Living Organisms Test - 52
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  • Question 1
    1 / -0
    Gnawing teeth occur in
    Solution
    The function of gnawing teeth is to chew or bite.
    (A)Rodents are the mammals that are characterized by the continuous growth of incisors which they use to gnaw a food.
    (B)Lagomorphs are mammals that possess the rodent-like gnawing incisors,
    So, the correct answer is 'Both A and B'.
  • Question 2
    1 / -0
    Which one among the following leads a solitary life?
    Solution
    Hares are rodents belonging to the genus Lupus. They belong to the same family as rabbits. They usually live solitarily or at most in pairs. Even their young ones are capable of finding their own food and love on their own soon after birth.
    So, the correct answer is 'Hare'.
  • Question 3
    1 / -0
    An arboreal rodent with longitudinal stripes is
    Solution

    Squirrels are small rodents found all over the world. They are basically of three types- tree squirrels, flying squirrels and ground squirrels. Out of these three, flying squirrels are considered arboreal rodents.

    So, the correct answer is 'Squirrel'.

  • Question 4
    1 / -0
    A nocturnal rodent producing pig like grunts is
    Solution
    Nocturnal animals are those animals who are active at night, rodents are animals having characterized continuous growing incisors. So, the nocturnal rodent which produces grunting sound like a pig is the porcupine.
    So, the answer is 'Porcupine'.
  • Question 5
    1 / -0
    Indian Pangolin is
    Solution
    Indian Pangolin is thick tailed and is an anteater found in Indian subcontinent. The biological name of Indian Pangolin is Manis crassicaudata. t is Chordate of manidae family.
    So, the answer is 'Both A and B'.
  • Question 6
    1 / -0
    Digits present on fore and hind limbs of Guinea Pig are
    Solution

    Guinea pigs are rodents that are domesticated household pets. They have the ability to learn complex learned paths for a long time. They are extensively used in researches as model organisms. They normally have four digits on their forelimbs as the thumb is absent and three digits on their hind limbs as digits I and V are absent.   

    So, the correct answer is '4 and 3'.

  • Question 7
    1 / -0
    Rabbit has a peculiar mode of nutrition
    Solution
    (A)Herbivory is the mode of nutrition in which animals eat plants.
    (B)Carnivory is the mode of nutrition in which animal eat (meat or) other animal.
    (C)Coprophagy is the mode of nutrition in which animal eat faeces or dung.
    So, the answer is 'Coprophagy'.
  • Question 8
    1 / -0
    Mammary glands are modified
    Solution
    Answer: (C) Sweat glands.
    Explanation:
    • The main function of the mammary gland in females is to secrete milk.
    • But they are structurally modified into sweat glands.
    • That is the reason why mammary glands are known as functionally milk-producing glands but structurally modified into sweat glands.
    Hence, mammary glands are modified into sweat glands.
  • Question 9
    1 / -0
    Kangaroo is inhabitant of
    Solution
    Kangaroo is a marsupial that has a characteristic feature of carrying their young ones in the pocket. They are inhabitants of Australia and the Americas.
    So, the correct answer is 'Australia'.
  • Question 10
    1 / -0
    Which of the following is a mammal? List a few mammalian characteristics.
    Solution
    Bats are mammals. They have mammary glands for the production of milk to nourish their young ones.
    Other characteristics of mammals are:
    • Their skin has hair as well as sweat and oil glands.
    • They are warm-blooded
    • They have four-chambered hearts.
    • They give birth to young ones directly without laying eggs (except platypus).
    The octopus is a mollusc. The crocodile is a reptile and the ostrich is a bird.
    So, the correct answer is option B.


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