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ICSE-X-Biology

Previous Year Paper year:2019

with Solutions -

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  • #
    -Answers to this Paper must be written on the paper provided separately.
  • You will not be allowed to write during the first 15 minutes.
  • This time is to be spent in reading the Question Paper.
  • The time given at the head of this paper is the time allowed for writing the answers.
  • Attempt all questions from Section I and any four questions from Section II.
  • The intended marks for questions or parts of questions are given in brackets [ ].
  • #
    Section : I
    (40 Marks)

    (Attempt All questions from this section)
  • #1
  • #1-a
    Name the following :
    [5]
  • #1-a-i
    The layer of the eyeball that provide nourishment to the eye.
    Ans : Choroid
  • #1-a-ii
    One gaseous compound which depletes the ozone layer.
    Ans : Chlorofluorocarbon
  • #1-a-iii
    The structure which connects the placenta and the foetus.
    Ans : Umbilical Cord
  • #1-a-iv
    A pair of corresponding chromosomes of the same shape and size and derived one from each parent.
    Ans : Homologous Chromosome
  • #1-a-v
    The compound formed when haemoglobin combines with carbon dioxide in blood.
    Ans : Carbaminohaemoglobin
  • #1-b
    Correct and rewrite the statement by changing the biological term that is underlined for each statement:
    [5]
  • #1-b-i
    The theory of Inheritance of Acquired Characters was proposed by Watson and Crick.

    Ans : The theory of inheritance of Acquired Characters was proposed by Jean Baptiste de Lamark.
  • #1-b-ii
    The protective sac which develops around the developing embryo is called the Pericardium.

    Ans : The protective sac which develops around the developing embryo is called amnion.
  • #1-b-iii
    Maintaining balance of the body and coordinating muscular activities is carried by the cerebrum.
    Ans : Maintaining balance of the body and coordinating muscular activities is carried out by the Cerebellum.
  • #1-b-iv
    The kidney is composed of number of neurons.
    Ans : The kidney is composed of number of nephrons.
  • #1-b-v
    The part of the eye which can be donated from a clinically dead person is the Retina.
    Ans : The part of the eye which can be donated from a clinically dead person is cornea.
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