RP08 - Plant Responses

• What is the first step in investigating the effect of light on seedling growth?

  Incubate seeds in 3 Petri dishes
• Why are the seedlings placed in different light conditions?

  To observe the effect of light on growth
• How often should the height of each seedling be measured?

  Every day for a week
• What should be plotted on the graph to analyze seedling growth?

  Mean seedling height against day
• Which group of seedlings is expected to grow the most?

  The group in full sunlight
• Why do seedlings in full sunlight grow the most?

  Light is required for photosynthesis
• What growth substance in plants is affected by light?

  Auxins
• How does light affect auxins in seedlings?

  It affects their distribution in stems
• Why is it necessary to calculate the mean height of seedlings?

  To make values more representative
• What does calculating the mean height allow for in the experiment?

  Comparison between groups of seedlings