ICSE-X-Biology

Previous Year Paper year:2012

with Solutions - page 6
  • #6
    : (a) The diagram below is an experiment conducted to study a factor necessary for Photosynthesis Observe the diagrams and then answer the following questions:
     12 (a) What is the aim of the experiment ? (a) Name the test performed on the leaf and the solution used for the test. (a) What type of leaf was used for the experiment ? Give an example. (a) What is the exported result of the above test on the parts labelled A and B ? (a) Give a balanced chemical equation to represent the process of Photosynthesis.
     14 (b) The diagram given below show the cross section of two kinds of blood vessels :
     13 (b) Identify the blood vessels A and B. In each case give a reason to support your answer. (b) Name the parts numbered 1 and 2. (b) When are the sound .LUBB' and .DUP' produced during a heartbeat ? Name the blood vessel that : (b) Name the blood vessel that:
    (1) begins and ends in capillaries
    (2) supplies blood tc the walls of the heart (a) The diagram below is an experiment conducted to study a factor necessary for Photosynthesis Observe the diagrams and then answer the following questions:
     12 (a) What is the aim of the experiment ? (a) Name the test performed on the leaf and the solution used for the test. (a) What type of leaf was used for the experiment ? Give an example. (a) What is the exported result of the above test on the parts labelled A and B ? (a) Give a balanced chemical equation to represent the process of Photosynthesis.
     14 (b) The diagram given below show the cross section of two kinds of blood vessels :
     13 (b) Identify the blood vessels A and B. In each case give a reason to support your answer. (b) Name the parts numbered 1 and 2. (b) When are the sound .LUBB' and .DUP' produced during a heartbeat ? Name the blood vessel that : (b) Name the blood vessel that:
    (1) begins and ends in capillaries
    (2) supplies blood tc the walls of the heart
    Ans : (a) (a) To show that chlorophyll is necessary ku photosynthesis. (a) Starch test.
    Solution used in Iodine solution. (a) Variegated leaf/Coleus leaf (leaf having non green and green regions). (a) After performing starch test,
    Part A turns blue black v/ith Iodine solution.
    Part B turns brown with Iodine solution Sunlight (a) null (b) (b) A - Artery, B - Vem
    A has narrow lumen and thick muscular wall
    B has wide lumen and thin muscular wall. (b) 1 - Endothelium
    2 - Lumen (b) .LUBB': Sound is produced when the two aurieuioventricular valves shut.
    .DUP': Sound is produced when the two semilunar valves shut (b) 1 Begins and ends in capillaries: .Hepatic porta Vein'.
    2. Supplies blood to the walls of the Heart: .Corunary artery'. (a) (a) To show that chlorophyll is necessary ku photosynthesis. (a) Starch test.
    Solution used in Iodine solution. (a) Variegated leaf/Coleus leaf (leaf having non green and green regions). (a) After performing starch test,
    Part A turns blue black v/ith Iodine solution.
    Part B turns brown with Iodine solution Sunlight (a) null (b) (b) A - Artery, B - Vem
    A has narrow lumen and thick muscular wall
    B has wide lumen and thin muscular wall. (b) 1 - Endothelium
    2 - Lumen (b) .LUBB': Sound is produced when the two aurieuioventricular valves shut.
    .DUP': Sound is produced when the two semilunar valves shut (b) 1 Begins and ends in capillaries: .Hepatic porta Vein'.
    2. Supplies blood to the walls of the Heart: .Corunary artery'.
  • #6-a [5]
    The diagram below is an experiment conducted to study a factor necessary for Photosynthesis Observe the diagrams and then answer the following questions:
     12
  • #6-a-i
    What is the aim of the experiment ?
    Ans : To show that chlorophyll is necessary ku photosynthesis.
  • #6-a-ii
    Name the test performed on the leaf and the solution used for the test.
    Ans : Starch test.
    Solution used in Iodine solution.
  • #6-a-iii
    What type of leaf was used for the experiment ? Give an example.
    Ans : Variegated leaf/Coleus leaf (leaf having non green and green regions).
  • #6-a-iv
    What is the exported result of the above test on the parts labelled A and B ?
    Ans : After performing starch test,
    Part A turns blue black v/ith Iodine solution.
    Part B turns brown with Iodine solution Sunlight
  • #6-a-v
    Give a balanced chemical equation to represent the process of Photosynthesis.
     14
  • #6-b-i
    Identify the blood vessels A and B. In each case give a reason to support your answer.
    Ans : A - Artery, B - Vem
    A has narrow lumen and thick muscular wall
    B has wide lumen and thin muscular wall.
  • #6-b-ii
    Name the parts numbered 1 and 2.
    Ans : 1 - Endothelium
    2 - Lumen
  • #6-b-iii
    When are the sound .LUBB' and .DUP' produced during a heartbeat ? Name the blood vessel that :
    Ans : .LUBB': Sound is produced when the two aurieuioventricular valves shut.
    .DUP': Sound is produced when the two semilunar valves shut
  • #6-b-iv
    Name the blood vessel that:
    (1) begins and ends in capillaries
    (2) supplies blood tc the walls of the heart
    Ans : 1 Begins and ends in capillaries: .Hepatic porta Vein'.
    2. Supplies blood to the walls of the Heart: .Corunary artery'.