Question 7(a)
[Maximum number: 2]
Organisms are able to respond to changes in their environment.
Name the two systems in the human body that respond to changes in the environment.
1
2
Edexcel IGCSE Biology 2.86 Homeostasis
Practise comparing nervous and hormonal communication using body systems, response speed data, hormones and behaviour contexts.
How this is tested
- distinguish nervous and hormonal control by signal type, target cells and response duration
- calculate speed ratios after converting units between centimetres, metres, seconds and minutes
- link adrenal glands or neurotransmitters to behaviour through adrenaline or nerve signalling