Investigating Tropisms Practical
Using seeds (like cress or mustard) to see how light and gravity influence the direction of growth.
How can you study geotropism without the influence of light?
What is Investigating Tropisms Practical?
"Tropism practicals are biological experiments that demonstrate how plant organs respond to external directional stimuli."
Which term correctly completes this GCSE Biology equation or calculation statement? A ____ is the total of results ÷ number of results
Which term correctly completes this GCSE Biology equation or calculation statement? ____ change = (final − initial) ÷ initial × 100
Choose the correct option to complete the statement. Biuret test turns ____ if protein is present
Which answer best completes the statement? Control variables are kept the same for a ____ test
Growth Experiments
Place seeds in a dark cupboard to eliminate light as a variable.
Turn a Petri dish on its side to observe the roots growing downwards.
Use a clinostat to rotate the seeds to cancel out the effect of gravity.
Always remember to state the independent, dependent, and control variables for this practical.
Want to improve faster?
The fastest way to improve your grade is to practise exam-style questions, identify your gaps, and focus only on what you don't know.
Related GCSE Biology Questions
Verified for 2024/25 Exams
Aligned to current UK Science Specifications
Little & Often Content Team
Science Education Specialists