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Diversity in Living Organisms Test - 82

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Diversity in Living Organisms Test - 82
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  • Question 1
    1 / -0
    One example of animals having a single opening to the outside that serves both as mouth as well as the anus is?
    Solution

    Correct Option: C

    Explanation:

    • Fasciola, sometimes known as the liver fluke, is a parasitic worm of platyhelminthes genus.
    • The body of a Fasciola (flatworm) contains a single cavity with one access to the outside.
    • The single opening serves as both a mouth for ingestion (food intake) and anus for egestion (undigested food is passed out).
    • It's known as the blind sac plan.

    Hence, Fasciola have a single opening to the outside that serves both as mouth as well as the anus.

  • Question 2
    1 / -0
    Which statements are not correct?
    a. Parapodia are lateral appendages in arthropods used for swimming.
    b. Radula in molluscs is structure involved in excretion
    c. Aschelminthes are dioecious
    d. Echinoderm adults show radial symmetry 
    e. Ctenophores are diploblastic.
    Solution
    In animals of phylum Annelida, aquatic annelids like Nereis possess lateral appendages, parapodia, which help in swimming. In animals of phylum Mollusca, the mouth contains a file-like rasping organ for feeding, called radula. In animals of phylum Aschelminthes, sexes are separate (dioecious) i.e., males and females are distinct. The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical. Ctenophores are diploblastic organisms with tissue level of organisation.

    So answer is A (a and b)
  • Question 3
    1 / -0
    Head is prolonged to form snout in members of Crocodilia for
  • Question 4
    1 / -0
    A parietal eye is found in
    Solution
    A parietal eye, also known as third eye or pineal eye, is a part of epithalamus present in some species. In sphenodon, the parietal eye is only visible in hatchlings, as it becomes covered in scales and pigments after four to six months. Its function is absorbing the ultraviolet rays and in setting circadian and seasonal cycles.
    So, option A is the correct option.
  • Question 5
    1 / -0
    A carnivorous dinosaur was
  • Question 6
    1 / -0
    Green turtle is
  • Question 7
    1 / -0
    Green turtle is known so because of its
  • Question 8
    1 / -0
    Which of the following is a flightless bird?
    Solution
    • The birds which have lost their ability to fly through evolution are called as flightless birds. 
    • Flightless birds include over 60 extant species including the well-known ratites(ostrich, emu, cassowary, rhea and kiwi) ) and penguins.
    • Kiwi or kiwis are flightless birds. These birds are native to New Zealand and belong to the genus Apteryx and family Apterygidae. 
    • Hence Kiwi is a flightless bird.
    • So, the correct answer is 'Kiwi'.
  • Question 9
    1 / -0
    A house lizard can climb a smooth wall due to the presence of
    Solution
    A house lizard can climb a smooth wall due to the presence of vaccuum pads that is present on the ventral side of the digits. They don't have sticky ventral side.
    So, the correct answer is C.
  • Question 10
    1 / -0
    All reptiles are
    Solution

    Correct Option: A

    Explanation : 

    • The tetrapod vertebrae which are reptile, bird, and mammal have a clade called amniotes.

    • They are characterized by having the property of laying eggs with an amnio within.

    • Reptiles are cold-blooded or poikilotherms.

    • Reptiles are Reptiles that have non-glandular skin types.

    • It has very dry and scaly skin.

    • Sexes are separate.

    • fertilization is internal.

    Hence, Reptiles are Poikilotherms and Amniotes.


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