Sense organs and the structure of the eye
Answers are for parents and teachers.
1
Write the 3 parts of an analyser and an example.
Receptor, nerve, cortical zone; for example eye – optic nerve – occipital.
2
Write the coats of the eyeball and their parts.
Fibrous: cornea, sclera; vascular: iris, pupil; retina.
3
Compare rods and cones.
Rods – dim light, no colour; cones – daylight, colour, sharp.
4
Write 4 rules to protect the eyes.
Do not rub with dirty hands, read in good light, personal towel, do not stare at strong light.
5
Whom do you go to if the eye is injured?
Tell adults and see a doctor; severe case 103.