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Diversity in Living Organisms Test - 26

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Diversity in Living Organisms Test - 26
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  • Question 1
    1 / -0
    Which is an ectotherm/poikilothermic animal?
    Solution
    Poikilothermic animals are those whose internal temperature varies according to the surroundings. Amphibians and Reptiles are ectotherms. Lizard is a reptile. hence, option A is correct.
  • Question 2
    1 / -0
    Cold blooded animals fall under the category of:
    Solution
    • Ectotherms are cold-blooded animals that depend on the temperature of their surroundings to change their own body temperature to survive.
    • Endotherms are warm-blooded animals which able to maintain constant body temperature, even in extreme environments. 
    • Psycrotherms are animals that live in the cold while thermophiles are animals that live in hot springs.

    The correct answer is option A.
  • Question 3
    1 / -0
    Thigmotaxis does not occur in
    Solution
    Thigmotaxis is movement showed by an organism in the direction or away from the stimulus of touch or pressure, this may not occur in sedentary animals like Hydra
    So, the correct answer is 'Hydra'

  • Question 4
    1 / -0
    Which pair of animals are similar to features mentioned?
  • Question 5
    1 / -0
    Metamerism is characterised of
    Solution
    Annulus means rings, the organisms belonging to phylum Annelida have their bodies divided into circular segments or rings, this segmentation is both internal and external, such that the segments are numbered externally to identify the internal organ system
    For example, the mouth lies at the second segment, while the brain lies in the third segment 
    So, the correct answer is 'Annelida'
  • Question 6
    1 / -0
    Animals that rely on heat from the environment rather than of metabolism, to raise their body temperature are called:
    Solution
    Animals that rely on heat from the environment rather than metabolism, to raise their body temperature are called ectothermic or poikilotherms Eg.  Pisces. reptiles, amphibians.
    So, the correct answer is 'Ectothermic'
  • Question 7
    1 / -0
    Annelids have
    Solution

    Correct Option: C

    Explanation:

    • The Annelids have triploblastic symmetry with a true coelom.
    • They display organ system level of the organization along with a segmented body plan.
    • They have a tube-within-a tube-like body.
    • Annelids respire via their body surface.
    • Annelids are hermaphrodites and they reproduce sexually. They also possess the ability to regenerate.

    Hence, option C, Tube-within-a-Tube plan, metameric segmentation and true coelom, correctly explains the body organization of Annelids.

     

     

  • Question 8
    1 / -0
    Which of the following is not a moneran?
    Solution
    Kingdom Monera includes prokaryotes. They lack a true nucleus. Monerans include archaebacteria, eubacteria, blue-green algae, etc.
    Diatoms are unicellular and eukaryotic organisms. They are under kingdom Protista.
    Thus, the correct answer is option B.
  • Question 9
    1 / -0
    Which is not a homoiotherm?
  • Question 10
    1 / -0
    Which is an anadromous fish?
    Solution
    Fishes that migrate from marine to fresh water are called anadromous fishes.
    A. Hippocampus is a catadromous fish.
    B. Petromyzon is an anadromous fish.
    C. Exocoetus is a catadromous fish.
    D. Anabas is a catadromous fish.
    So, the correct answer is 'Petromyzon'.
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