Cards (26)

  • What is the independent variable in the light intensity experiment?
    Light intensity
  • What is the dependent variable in the light intensity experiment?
    Height of the seedlings
  • What is used to soak the cotton wool in the experiment?
    Equal volumes of water
  • Why is the volume of water considered a control variable?
    It ensures consistent watering across dishes
  • How many mustard seeds are placed in each dish?
    10 mustard seeds
  • What is another control variable in the experiment?
    Type of seed
  • What should be done if the number of seedlings differs among dishes?
    Remove seedlings to equalize the number
  • How should the height of each seedling be measured?
    Using a ruler while holding the stems straight
  • Where should the dishes be placed for the experiment?
    In different light conditions
  • What are the three light conditions used in the experiment?
    Full sunlight, partial light, and darkness
  • How often should the height of seedlings be measured?
    Every day for at least five days
  • What should be done with the results after the experiment?
    Calculate mean seedling height and draw diagrams
  • Why do seedlings grow towards the light source?
    Due to phototropism caused by auxin concentration
  • What happens to seedlings kept in the dark?
    They grow rapidly but have small yellow leaves
  • Why do seedlings have small yellow leaves in the dark?
    They cannot photosynthesize without light
  • How does gravity affect the growth direction of seedlings?
    Roots grow downwards, shoots grow upwards
  • What happens to auxin in roots due to gravity?
    Auxin builds up on the lower side
  • How does auxin affect root growth in response to gravity?
    It inhibits growth on the lower side
  • Where can students find more questions on this practical?
    In the vision workbook linked above
  • Why is it important to learn the details of the required practical?
    To perform the experiment accurately and effectively
  • What role does auxin play in plant growth control?
    It regulates growth direction and rate
  • Why is accurate measurement and recording of results crucial?
    It ensures reliable and valid experimental outcomes
  • How does phototropism relate to auxin?
    Auxin concentration causes seedlings to bend towards light
  • What are the effects of light intensity on seedling growth?
    Higher light intensity promotes better growth
  • How do seedlings in darkness differ from those in light?
    Dark seedlings grow rapidly but lack chlorophyll
  • What is the relationship between auxin distribution and root growth?
    Auxin concentration affects growth direction in roots