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Diversity in Living Organisms Test - 80

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Diversity in Living Organisms Test - 80
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  • Question 1
    1 / -0
     Match the following with reference to Taenia solium.
    List-IList-II
    (A) Mehlis glands(I) Tegument formation 
    (B) Vitelline gland (II) Osmoregulation and excretion 
    (C) Mesenchymal cell (III) Lubricate passage of capsules into uterus 
    (D) Flame cells (IV) Secretion of embryophore       
    (V)  Capsule formation around zygote 

    Solution
    Mehlis glands are present surrounding the ootype of Platyhelminthes and is a part of the female reproductive system of Platyhelminthes. Its secretion lubricates the passage of uterus through which ova moves. 
    The vitelline gland secretes substances for the development of the egg yolk and the formation of the shell/capsule around zygote.
    The excretory system of fasciola is concerned with excretion as well as osmoregulation. It consists of flame cells.
    The flukes and tapeworms possess an external covering known as tegument, formed of nonciliated extensions of large cells within the mesenchyme.
    Thus, the correct answer is the option (D). 
  • Question 2
    1 / -0
    A student observed a species and noticed the following characteristics in them. They have dry skin with scales, reproduce by laying eggs and respire through lungs. They are cold-blooded and have three chambered hearts. What phylum this species might belong to?
  • Question 3
    1 / -0
    The life span of house spider is
  • Question 4
    1 / -0
    Which one of the following does not have larvae in its life cycle?
    Solution
    • A larva is a distinct juvenile form many animals undergo before metamorphosis into adults.
    •  Earthworm belongs to phylum Annelida and it does not have larvae in its life cycle. 
    • The earthworm mates and fertilizes the egg which is held in the protective cocoon. It hatches from the cocoon and burrows in the soil where it grows into a juvenile worm and finally into a mature worm.  Hence, option B is correct. 
  • Question 5
    1 / -0
    Organisms of the phylum  ___________  have no coelom.
    Solution
    The organisms of the phylum Platyhelminthes have flattened bodies. They do not possess a true internal body cavity or coelom, in which organs can be accommodated.
    Annelids, arthropods, and echinoderms possess true coelom.
    So, the correct answer is option A.
  • Question 6
    1 / -0
    In contrast to annelids, the platyhelminthes show
    Solution
    Correct Option: A
    Explanation: 

     Annelids Platyhelminthes
    They have a cylindrical and segmented body.They have a flat and thin body
    They are coelomates as they possess a true body cavity.They are called acoelomates. 
    They have a complete digestive tract with two openings.They have an incomplete digestive tract with a single opening.
     Eg: Earthworms Eg: Planaria
    Hence, in contrast to annelids, the Platyhelminthes do not have a body cavity.
  • Question 7
    1 / -0
    Which one of the following does not have radial symmetry?
    Solution
    Option $$-(C) $$ Spider
    • Radial symmetry is a symmetry in which the sides exhibit correspondence or regularity of parts around a central axis.
    • Radial symmetry is especially suitable for sessile animals such as the sea anemone, floating animals such as jellyfish and slow-moving organisms.
    • Spider are grouped under the Arthropoda and exhibits bilateral symmetry
  • Question 8
    1 / -0
    Homo sapiens is
    Solution
    option $$-(A) $$ Coelomate
    To put things in perspective, our species
    Homo sapiens has been around for only about the
    last $$ 100,000 $$ years. In Homo sapiens, body space is 
    a true coelon, or eucoelom enclosed by mesoderm on 
    both sides, hence they are called coelomate.

  • Question 9
    1 / -0
    Cold blooded animals are
    Solution
    Option $$-(B)$$ Frog, Snake
    Cold blooded animals can be either terrestrial 
    or aquatic. Cold blooded is an informal term for
    one or more of a group of characteristics that
    determine an animal's then mophysiology.

  • Question 10
    1 / -0
    Which animal group (warm blooded/not poikilothermic) maintains high and constant body temperature?
    Solution
    Option $$-(C) $$ Birds
    The ability of maintaing constant temperature
    help birds to explore. The average body temperature 
    of bird is 105 degrees. In cooler weather, Mather than  
    increasing their metabolic hate, birds can save energy 
    by using environmental heat to raise their body 
    temperature passively.

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