A reflex occurs the iris of the human eye in response to changes in light levels - describe how these changes occur, referring to the changes in light level in your answer.
I would most likely present a figure of a dilated & undilated pupal and hopefully this will begin their thought process.
To receive full marks for this answer, I will be looking for the below points:• pupils dilate in low light levels because• circular muscles (in iris) relax • (and) radial muscles contract
BS
Related Physics GCSE answers
All answers ▸A mobile phone falls to the floor. The glass screen shatters while the aluminium frame remains intact. Explain why this happens in terms of the properties of glass and aluminium.
What are the 8 forms of energy? How can I remember them?
What is an (electrostatically) induced charge?
what is a half life of a substance and how can you work it out.