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Gr.10 Biology assessment

Quiz by Najah Hammoud

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13 questions
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  • Q1
    Autotrophs are plants that :
    do not undergo photosynthesis
    are non-cholorphyllic
    are chlorophyllic and undergo photosynthesis to make their own food
    obtain materials mainly form substances manufactured by other organisms
    60s
  • Q2
    Knop's liquid :
    is not important for growth and development of green plants
    is vital for the development of fungi
    ensures the complete growth and development of a chlorophillic plant even without soil
    60s
  • Q3
    Iodine tests are used to test for:
    carbon dioxide gas
    starch in plants and food
    Reducing sugars
    proteins
    45s
  • Q4
    When testing a leaf for starch, the leaf must be boiled in alcohol as seen in the picture above. Explain why is this step important?
    Question Image
    to help the plant start photosynthesis reaction
    for other reasons
    to dissolve the chlorophyll
    to dissolve the starch
    60s
  • Q5
    Photosynthesis is a chemical reaction that:
    uses oxygen gas and glucose in presence of sunlight to produce water and carbon dioxide gas
    uses water and carbon dioxide gas in presence of sunlight to produce oxygen gas and glucose
    uses minerals and glucose to produce oxygen and starch
    60s
  • Q6
    The following organelle is called:
    Question Image
    mitochondria
    chlorophyll
    chloroplast
    vacuole
    45s
  • Q7
    The two main functions of chlorophyll are:
    absorbs carbon dioxide gas and release oxygen gas
    absorbs sunlight energy and give the plant its green color
    absorbs sunlight and carbon dioxide gas
    60s
  • Q8
    The first organic molecules synthesized during photosynthesis in Chlorophyllic plants are:
    carbohydrates
    lipids
    proteins
    45s
  • Q9
    Which of the following plants will show a dark blue color when tested with iodine?
    Question Image
    none of the plants
    plant 1
    plant 2
    120s
  • Q10
    The experiment in the figure studies the importance of:
    Question Image
    light factor in photosynthesis
    water factor in photosynthesis
    carbon dioxide gas factor in photosynthesis
    60s
  • Q11
    Propose a title for the graph above.
    Question Image
    The variation of time ( in hours)as a function oxygen gas produced (in ml) when being exposed to light and darkness.
    The variation of oxygen gas produced (in ml) as a function of exposure to light and darkness.
    The variation of oxygen gas produced (in ml) as a function of time( in hours) when being exposed to light and darkness.
    60s
  • Q12
    The decrease in volume of oxygen gas in obscurity( darkness) shows that:
    Question Image
    The pant is undergoing cellular respiration and absorbing oxygen gas
    The pant is undergoing cellular respiration and releasing oxygen gas
    The plant is undergoing photosynthesis and and absorbing oxygen gas
    120s
  • Q13
    The increase in the volume of oxygen gas in light shows that:
    Question Image
    The pant is undergoing photosynthesis and releasing oxygen gas
    The pant is undergoing cellular respiration and releasing oxygen gas
    The pant is undergoing cellular respiration and absorbing oxygen gas
    120s

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