HomeLearn Fast select Course
Show Unit/ChapterChange UnitChange SubjectLast Menu
ICSE-X-Biology

Previous Year Paper year:2019

with Solutions - page 4
Qstn# II-5 Prvs-QstnNext-Qstn
  • #5
    null (a) Given below is an apparatus which was set up to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow :
    [5]
    (a) Identify Australopithecus and Neanderthal man from the above pictures.
    (a) Mention two characteristic features each for the two stages.
    (a) Who proposed the theory of ‘Natural Selection’ ?
    (a) Name the organism used as an example to explain ‘Industrial Melanisum’.
    (a) Give two examples of Vestigial organs in humans.
    (b) Given below are two stages in the evolution of man. study them and answer the questions that follow:
    [5]


    (b) Identify Australopithecus and Neanderthal man from the above pictures.
    (b) Mention two charcterstic feature each for the two stages.
    (b) Who proposed the theory of ‘Natural Selection’?
    (b) Name the organism used as an example to ‘Industrial Melanisum’.
    (b) Give two examples of vestigial organs in humans.
    (a) Given below is an apparatus which was set up to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow :
    [5]
    (a) Identify Australopithecus and Neanderthal man from the above pictures.
    (a) Mention two characteristic features each for the two stages.
    (a) Who proposed the theory of ‘Natural Selection’ ?
    (a) Name the organism used as an example to explain ‘Industrial Melanisum’.
    (a) Give two examples of Vestigial organs in humans.
    (b) Given below are two stages in the evolution of man. study them and answer the questions that follow:
    [5]


    (b) Identify Australopithecus and Neanderthal man from the above pictures.
    (b) Mention two charcterstic feature each for the two stages.
    (b) Who proposed the theory of ‘Natural Selection’?
    (b) Name the organism used as an example to ‘Industrial Melanisum’.
    (b) Give two examples of vestigial organs in humans.
    Ans : null (a) (a) Transpiration, It is the loss of water in the form of water vapour from aerial exposed parts of plants.
    (a) To prevent escape of water vapour from the pot.
    (a)
    • Intensity of sunlight
    • Increase in temperature
    (a)
    • Sunken stomata
    • Thick cuticle
    (a)
    (b) (b) A - Neanderthal

    B - Australopithecus
    (b) A - Height 600 cm, cranial capacity 1450 cm3

    B - Height 120 cm, cranial capacity 450 - 600 cm3
    (b) Charles Darwin
    (b) peppered moth (Biston bitularia)
    (b) Vermiform Appendix ; Wisdom tooth
    (a) (a) Transpiration, It is the loss of water in the form of water vapour from aerial exposed parts of plants.
    (a) To prevent escape of water vapour from the pot.
    (a)
    • Intensity of sunlight
    • Increase in temperature
    (a)
    • Sunken stomata
    • Thick cuticle
    (a)
    (b) (b) A - Neanderthal

    B - Australopithecus
    (b) A - Height 600 cm, cranial capacity 1450 cm3

    B - Height 120 cm, cranial capacity 450 - 600 cm3
    (b) Charles Darwin
    (b) peppered moth (Biston bitularia)
    (b) Vermiform Appendix ; Wisdom tooth
  • #5-a
    Given below is an apparatus which was set up to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow :
    [5]
  • #5-a-i
    Identify Australopithecus and Neanderthal man from the above pictures.
    Ans : Transpiration, It is the loss of water in the form of water vapour from aerial exposed parts of plants.
  • #5-a-ii
    Mention two characteristic features each for the two stages.
    Ans : To prevent escape of water vapour from the pot.
  • #5-a-iii
    Who proposed the theory of ‘Natural Selection’ ?
    Ans :
    • Intensity of sunlight
    • Increase in temperature
  • #5-a-iv
    Name the organism used as an example to explain ‘Industrial Melanisum’.
    Ans :
    • Sunken stomata
    • Thick cuticle
  • #5-a-v
    Give two examples of Vestigial organs in humans.
    Ans :
  • #5-b
    Given below are two stages in the evolution of man. study them and answer the questions that follow:
    [5]


  • #5-b-i
    Identify Australopithecus and Neanderthal man from the above pictures.
    Ans : A - Neanderthal

    B - Australopithecus
  • #5-b-ii
    Mention two charcterstic feature each for the two stages.
    Ans : A - Height 600 cm, cranial capacity 1450 cm3

    B - Height 120 cm, cranial capacity 450 - 600 cm3
  • #5-b-iii
    Who proposed the theory of ‘Natural Selection’?
    Ans : Charles Darwin
  • #5-b-iv
    Name the organism used as an example to ‘Industrial Melanisum’.
    Ans : peppered moth (Biston bitularia)
  • #5-b-v
    Give two examples of vestigial organs in humans.
    Ans : Vermiform Appendix ; Wisdom tooth