Describe the changes in pupil size when light is shined into the eye. Explain why this happens.

The pupil constricts (becomes smaller) to decrease the light entering the eye. This prevents damage to the eye.

Answered by Melissa K. Biology tutor

2493 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe the functional importance of the heart as a pump


Describe how the body maintains homeostasis when there is a drop in body temperature.


Define osmosis


What is the difference between a virus and a bacteria? What is an example of each?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences