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Classification of Animals Test - 3

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Classification of Animals Test - 3
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  • Question 1
    1 / -0
    Which of the following organisms are called invertebrates?
    Solution

    Option 1 is the correct answer.
    Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord.

  • Question 2
    1 / -0
    Which of the following is the characteristic feature of poriferans?
    Solution
    Presence of pores is the characteristic feature of poriferans.
    Poriferans are commonly called sponges. Poriferans do not have mouths, instead they have tiny pores in their outer walls through which water is drawn.
  • Question 3
    1 / -0
    Which of the following organisms form shells over their bodies?
    Solution

    Molluscs are invertebrates of a large phylum which includes snails, slugs, mussels, and octopuses. They have a soft unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell. Hence, option 3 is the correct answer.

  • Question 4
    1 / -0
    Which of the following is not an echinoderm?
    Solution

    Starfish, sea urchin and antedon belong to the phylum Echinodermata. Hydra belongs to the phylum Cnidaria.

  • Question 5
    1 / -0
    Which of the following organisms possess flattened bodies?
    Solution

    The flatworms, flat worms, Platyhelminthes, Plathelminthes, or Platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Hence, option 3 is the correct answer.

  • Question 6
    1 / -0
    Which of the following organisms causes 'elephantiasis' in humans?
    Solution

    Option 4 is the correct answer.
    Wuchereria bancrofti is a human parasitic roundworm that is the major cause of lymphatic filariasis, which is elephantiasis.

  • Question 7
    1 / -0
    Study the classification chart given below. On what basis are the animals grouped?



    Solution
    Tapeworm, liver fluke and Ascaris are parasites whereas earthworm is free living.
    Tapeworm and liver fluke: Flatworm , acoelomate, triploblastic, parasitic and bilateral symmetry
    Ascaris: Roundworm, pseudocoelomate, triploblastic, parasitic and bilateral symmetry
    Earthworm: Annelid, coelomate, triploblastic, free living and bilateral symmetry

  • Question 8
    1 / -0
    An organism X is a tube-shaped, segmented worm found in the phylum Annelida. It is commonly found in soil, feeding on live and dead organic matter. It's digestive system runs through the length of its body. It conducts respiration through its skin. Identify 'X'.
    Solution
    An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They have a world-wide distribution and are commonly found living in soil, feeding on live and dead organic matter. An earthworm's digestive system runs through the length of its body. It conducts respiration through its skin.
  • Question 9
    1 / -0
    Which of the following is not a characteristic feature of annelids?
    Solution
    Annelids are found worldwide in all types of habitats, especially oceanic waters, fresh waters, and damp soils. Annelids are not confined to only aquatic habitats and the aquatic habitat is not a characteristic of annelids.
  • Question 10
    1 / -0
    Which of the following organisms is not an arthropod?
    Solution
    Snail belongs to Phylum Mollusca and Class Gastropoda. It is not an arthopod.
  • Question 11
    1 / -0
    Which of the following organisms possess jointed legs?
    Solution

    All arthropods have bilateral symmetry, segmented bodies, and hard exoskeletons. Another character inherited by all arthropods is jointed legs.

  • Question 12
    1 / -0
    The diagram given below shows two organisms A and B belonging to Phylum Arthopoda.


    Choose the option which is incorrect about A and B.
    Solution
    A represents a centipede whereas B represents a millipede. Option 1 is incorrect as millipedes have 2 pairs of legs per body segment while centipedes have 1 pair of legs per body segment.
  • Question 13
    1 / -0
    Which of the following is not a characteristic feature of `Pisces`?
    Solution
    Pisces include fishes and other aquatic animals. They have streamlined and scaly bodies, and are oviparous. They respire through gills and not lungs. Hence, option 4 is the correct answer.
  • Question 14
    1 / -0
    Which of the following cannot survive outside the water?
    Solution

    Pisces are aquatic, gill-bearing animals and they cannot survive outside water.

  • Question 15
    1 / -0
    Which of the following organisms can live both on land and water?
    Solution
    Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads, salamanders, and newts. All can breathe and absorb water through their very thin skin. They can live on both land and water.
  • Question 16
    1 / -0
    Which of the following are warm-blooded organisms?
    Solution

    Snakes, fish and frogs are cold-blooded, while birds are warm-blooded. Hence, option 4 is the correct answer.

  • Question 17
    1 / -0
    Which among the following is not an amphibian?
    Solution

    Snake is a reptile, whereas all other options are amphibians.
    So, the correct option is 3.

  • Question 18
    1 / -0
    Which of the following is not a characteristic feature of reptiles?
    Solution

    Reptiles are cold-blooded, and not warm-blooded. Hence, option 3 is the correct answer.

  • Question 19
    1 / -0
    Which of the following organisms does not possess a four chambered heart?
    Solution
    The toad heart has 3 chambers: two atria and a single ventricle. The atrium receives deoxygenated blood from the blood vessels (veins) that drain the various organs of the body. The left atrium receives oxygenated blood from the lungs and skin (which also serves as a gas exchange organ in most amphibians).
  • Question 20
    1 / -0
    Which of the following reptiles has a four chambered heart?
    Solution

    The only reptile that has four-chambered heart is a crocodile.

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