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Diversity in Living Organisms Test - 78

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Diversity in Living Organisms Test - 78
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  • Question 1
    1 / -0
    Water helps in the growth of plants, but plants not grow well in a soil flooded with water. The appropriate reason for this is that the?
  • Question 2
    1 / -0
    A true fish among the following is not:
    Solution
    The hagfish is a jawless fish and belongs to jawless vertebrates. True fish belong to the jawed vertebrates. The dogfish, catfish, and sawfish belong to the different groups of jawed vertebrates.
    Thus, the correct answer is (C).
  • Question 3
    1 / -0
    Notochord present only in its embryonic stage, in _____________.
    Solution
    In Branchiostoma, Notochord prest only in 
    its enbryonic stage. It is one of the few
    living genera of lancelets. It is the type genus
    of family Branchiostomidae. A nothochord is a 
    Primitive beggining to the backbone.

  • Question 4
    1 / -0
    Which of the following period is known as the age of fishes?
    Solution
    The Devonian Period is also known as the age of fish. It is because of the diverse and abundant types of creatures that swam in the Devonian seas. Forests and the coiled shell-bearing marine organisms known as ammonites appeared early in the Devonian period. 
  • Question 5
    1 / -0
    Reasons for success of reptiles as true land animals are all except:
    Solution
    • Reptiles are cold-blooded vertebrates
    So, the correct answer is option B. 
  • Question 6
    1 / -0
    Choose the incorrect statement.
    Solution
    Correct Option: A
    Explanation:
    • Annelida is a phylum that contains worm like marine animal with external fertilization and indirect development.
    • Balanoglossus belongs to the phylum hemichordata.
    • In Urochordates, the nerve cord and notochord present in the tail of the larve are lost during metamorphosis. This is called retrogressive metamorphosis.
    • In reptiles the ventricles are partly divided by septum but in crocodiles and alligators, the heart is completely divided into four chambers.
    • Male macropus, also known as, Kangaroo exhibite saltatory locomotion and brood pouch, called marsupium, for parental care.
    Hence, the incorrect statement is: Balanoglossus is a worm like marine animal with external fertilization and indirect development.
  • Question 7
    1 / -0
    Which of the following is correctly matched?
    Solution
    Correct Option: C
    Explanation:
    • Autotomy, also called self-amputation, is the ability by which an organism can cast off a part of its body when in threat or danger.
    • House lizards can break off their tail when grasped by a predator.
    • Butterflies have adaptations like modification in wing colors that help them escape from predators. The wing colour gives the predators fear that they contain some toxic substances.
    • Garden Lizards can change their colour according to the surrounding to camouflage from predators.
    Hence, the correctly matched pair is: House lizard -Autotomy.
  • Question 8
    1 / -0
    Amphibians among plants belong to ___________.
    Solution
    Bryophytes are called amphibians of the plant kingdom as they live on land but require water for sexual reproduction. Hence the correct option is B.
  • Question 9
    1 / -0
    Which of the following is correct?
    Solution
    • Mammals can be divided into three more groups based on how their babies develop. These three groups are monotremes, marsupials, and the largest group, placental mammals.
    • The skin of mammals is unique in possessing hair. In mammals External ears or pinnae are present and 4 chambered heart is seen.
    • Macropus is a marsupial genus that belongs to the family Macropodidae. It has 13 species which are further divided into 3 subgenera. The genus includes all terrestrial kangaroos, wallaroos, and several species of wallaby.
    • As Macropus belongs to class Mammalia they are characterized by the presence of  Ear pinna, body hairs, and 4 chambered hearts.
    • So, the correct answer is 'Macropus - Ear pinna, body hairs, 4 chambered heart'.
  • Question 10
    1 / -0
    Which among the following is not an aerial or flight adaptations in birds?
    Solution
    The absence of ear openings is an adaptation found in Reptiles, for example, Salamander. 
    Birds have developed many modifications for flight adaptation which include, warm-bloodedness, spindle-shaped body, and presence of air sacs.
    So, the correct option is C.
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