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ICSE-X-Biology

Previous Year Paper year:2019

with Solutions - page 4
Qstn# II-3-a Prvs-QstnNext-Qstn
  • #3-a
    The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
    [5]


    (a) Name the factor studied in this experiment.
    (a) What will you observe in the experimental leaf after the starch test?
    (a) Explain the process of Photosynthesis.
    (a) Give a balanced chemical equation to represent the process of photosynthesis.
    (a) Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
    (b) State the main functions of the following :
    [5]
    (b) Medulla Oblongata
    (b) Cytokinins
    (b) Tears
    (b) Coronary Artery
    (b) Seminal Vesicles
    (a) Name the factor studied in this experiment.
    (a) What will you observe in the experimental leaf after the starch test?
    (a) Explain the process of Photosynthesis.
    (a) Give a balanced chemical equation to represent the process of photosynthesis.
    (a) Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
    (b) State the main functions of the following :
    [5]
    (b) Medulla Oblongata
    (b) Cytokinins
    (b) Tears
    (b) Coronary Artery
    (b) Seminal Vesicles
    (a) Name the factor studied in this experiment.
    (a) What will you observe in the experimental leaf after the starch test?
    (a) Explain the process of Photosynthesis.
    (a) Give a balanced chemical equation to represent the process of photosynthesis.
    (a) Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
    (b) State the main functions of the following :
    [5]
    (b) Medulla Oblongata
    (b) Cytokinins
    (b) Tears
    (b) Coronary Artery
    (b) Seminal Vesicles
    Ans : (a) Sunlight
    (a) The exposed parts will turn blue-black with iodine solution while the part covered with black paper strip turns brown.
    (a) The process by which green plants containing chlorophyll produce food (glucose) from carbon dioxide and water by using light energy.
    (a)
    (a)
    (b) (b) Controls involuntary activities
    (b) Expansion of cotyledons, inhibits apical dominance, cell elongation.
    (b) Helps in killing germs, lubricates surface of eye.
    (b) Supply blood to heart muscles.
    (b) Produces secretion which serves as a mediums for transportation of sperms which forms semen.
    (a) Sunlight
    (a) The exposed parts will turn blue-black with iodine solution while the part covered with black paper strip turns brown.
    (a) The process by which green plants containing chlorophyll produce food (glucose) from carbon dioxide and water by using light energy.
    (a)
    (a)
    (b) (b) Controls involuntary activities
    (b) Expansion of cotyledons, inhibits apical dominance, cell elongation.
    (b) Helps in killing germs, lubricates surface of eye.
    (b) Supply blood to heart muscles.
    (b) Produces secretion which serves as a mediums for transportation of sperms which forms semen.
    (a) Sunlight
    (a) The exposed parts will turn blue-black with iodine solution while the part covered with black paper strip turns brown.
    (a) The process by which green plants containing chlorophyll produce food (glucose) from carbon dioxide and water by using light energy.
    (a)
    (a)
    (b) (b) Controls involuntary activities
    (b) Expansion of cotyledons, inhibits apical dominance, cell elongation.
    (b) Helps in killing germs, lubricates surface of eye.
    (b) Supply blood to heart muscles.
    (b) Produces secretion which serves as a mediums for transportation of sperms which forms semen.
  • #3-a-i
    Name the factor studied in this experiment.
    Ans : Sunlight
  • #3-a-ii
    What will you observe in the experimental leaf after the starch test?
    Ans : The exposed parts will turn blue-black with iodine solution while the part covered with black paper strip turns brown.
  • #3-a-iii
    Explain the process of Photosynthesis.
    Ans : The process by which green plants containing chlorophyll produce food (glucose) from carbon dioxide and water by using light energy.
  • #3-a-iv
    Give a balanced chemical equation to represent the process of photosynthesis.
    Ans :
  • #3-a-v
    Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
    Ans :
  • #3-b
    State the main functions of the following :
    [5]
  • #3-b-i
    Medulla Oblongata
    Ans : Controls involuntary activities
  • #3-b-ii
    Cytokinins
    Ans : Expansion of cotyledons, inhibits apical dominance, cell elongation.
  • #3-b-iii
    Tears
    Ans : Helps in killing germs, lubricates surface of eye.
  • #3-b-iv
    Coronary Artery
    Ans : Supply blood to heart muscles.
  • #3-b-v
    Seminal Vesicles
    Ans : Produces secretion which serves as a mediums for transportation of sperms which forms semen.