Cambridge IGCSE Biology
14.2Sense organs
Sense organs in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic21 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 14.2.1Describe sense organs as groups of receptor cells that respond to specific stimuli.
- 14.2.2Identify the parts of the eye, describe their functions and explain the pupil reflex.
- 14.2.3Supplement: explain the pupil reflex using the circular and radial muscles of the iris, and explain accommodation using the ciliary muscles, suspensory ligaments and lens shape.
- 14.2.4Supplement: describe the distribution and functions of rods and cones and identify the fovea and state its function.
Lessons
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The eye
25 min
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