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Diversity in Living Organisms Test - 12

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Diversity in Living Organisms Test - 12
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  • Question 1
    1 / -0

    Use the following information to answer the next question.

    An organism has a rough and moist skin. Its body is divided into a head and a trunk. The tail is absent. It has five digits on its limbs.

    Which organism is described here?

    Solution

    Bufo or toad is the described organism.

    The correct answer is A.

    Why alternatives B, C and D are wrong:

    Newts, mudpuppy, and salamander are tailed amphibians.

  • Question 2
    1 / -0

    The organisms that are related to each other show similar characteristics. In which row is organism 1 most closely related to organism 2?

    Solution

    Amoeba and Euglena are more closely related to each other than any other pair of organisms as they both belong to the Kingdom Protista and show similar characteristics.

    The correct answer is A.

  • Question 3
    1 / -0

    Use the following information to answer the next question.

    Michael makes a list of four pairs of organisms.

    I Pila and cowries

    II Starfish and saw fish

    III Spider and roundworm

    IV Earthworm and Aurelia

    The most closely related organisms are present in pair

    Solution

    Pila and cowries are both mollusks with a univalve shell. Therefore, they are closely related to each other.

    The correct answer is A.

    Why alternative B is wrong:

    Starfish is an echinoderm while saw fish belongs to the Class Pisces. Hence, they are not closely related.

    Why alternative C is wrong:

    Spider is an arthropod while roundworm is a nematode. Hence, they are not closely related.

    Why alternative D is wrong:

    Earthworm is an annelid while Aurelia is a coelenterate. Hence, they are not closely related.

  • Question 4
    1 / -0

    In which alternative is organism 1 most closely related to organism 2?

    Solution

    Pea and rose are more closely related to each other as they are both angiosperms.

    The correct answer is A.

    Why alternative B is wrong:

    Rose is an angiosperm while pine is a gymnosperm. Hence, they are not closely related.

    Why alternative C is wrong:

    Pine is a gymnosperm while horsetails are pteridophytes. Hence, they are not closely related.

    Why alternative D is wrong:

    Horsetails are pteridophytes while pea is an angiosperm. Hence they are not closely related.

  • Question 5
    1 / -0

    The organisms belonging to the same phylum are more closely related to each other. In which alternative is organism 1 not related to organism 2?

    Solution

    A bat is a mammal while an owl is a bird. They show different characteristics and are not related.

    The correct answer is D.

    Why alternative A is wrong:

    A saw fish and an electric ray belong to the Class Pisces and show common characteristics.

    Why alternative B is wrong:

    Salamandra and Rana belong to the Class Amphibia and are closely related.

    Why alternative C is wrong:

    A lizard and a chameleon belong to the Class Reptilia and are closely related.

  • Question 6
    1 / -0

    The organisms that show common characteristics are more closely related to each other. In which alternative is organism 1 most closely related to organism 2?

    Solution

    Sting ray and sea horse are both members of the Class Pisces and show many common characteristics of the Class Pisces. Hence, they are closely related.

    The correct answer is A.

    Why alternative B is wrong:

    Sea horse is a fish while Bufo is an amphibian. Hence, they are not closely related.

    Why alternative C is wrong:

    Bufo is an amphibian while turtle is a reptile. Hence, they are not closely related.

    Why alternative D is wrong:

    Turtle is a reptile while sting ray is a fish. Hence, they are not closely related.

  • Question 7
    1 / -0

    Use the following information to answer the next question.

    A marine animal has a symmetrical vase-like body. The body is perforated by numerous pores and is lined by flagellated cells. Mouth and anus are absent in the organism.

    Which organism is described here?

    Solution

    Sycon is a poriferan and poriferans exhibit the described features.

    The correct answer is A.

    Why alternative B is wrong:

    Planarians do not have a vase-like perforated body. They belong to the Phylum Platyhelminthes.

    Why alternative C is wrong:

    An earthworm has a bilaterally symmetrical body, with a mouth and an anus. It belongs to the Phylum Annelida.

    Why alternative D is wrong:

    A roundworm has a bilaterally symmetrical body, with a mouth and an anus. It belongs to the Phylum Nematoda.

  • Question 8
    1 / -0

    In which alternative is animal 1 not related to animal 2?

    Solution

    An opossum is a mammal while an ostrich is a bird. They show different characteristics and are not related.

    The correct answer is D.

    Why alternative A is wrong:

    An owl and a parakeet are both birds showing avian characteristics.

    Why alternative B is wrong:

    A kangaroo and a koala are both marsupial mammals.

    Why alternative C is wrong:

    A crocodile and a turtle are both reptiles and exhibit reptilian characteristics.

  • Question 9
    1 / -0

    Use the following information to answer the next question.

    A marine organism shows the given characteristics.

    • Streamlined body

    • Cartilaginous endoskeleton

    • Scales on skin

    • Fins for locomotion

    Which organism is described here?

    Solution

    A sting ray is a cartilaginous fish with a cartilaginous endoskeleton.

    The correct answer is A.

    Why alternatives B, C and D are wrong:

    Sea horse, angler fish, and climbing perch have bony endoskeletons.

  • Question 10
    1 / -0

    Use the following information to answer the next question.

    Ethan reads about an organism with the given features.

    • Radially symmetrical body

    • Presence of nematocysts

    • Absence of organ systems

    Which organism is described here?

    Solution

    The described organism is the hydra. The stinging cells called nematocysts are a characteristic feature of only members of the Phylum Coelenterate.

    The correct answer is A.

    Why alternative B is wrong:

    Leech is an annelid. It does not have nematocysts.

    Why alternative C is wrong:

    Centipede is an arthropod. It does not have nematocysts.

    Why alternative D is wrong:

    Hookworm is a nematode. It does not have nematocysts.

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