Coordination

Question 1

What are examples of environmental changes (interal and external) stimulating responses?

Answer 1

Internal Environment

• Glucose Concentration
• Internal Temperature
• Water Potential
• pH

External Environment

• Humidity
• External Temperature
• Light Intensity
• Sudden movements/sounds

Question 2

What is difference between how animals and plants react to changes in the environment?

Answer 2

• Animals react through electrical (neurones) and chemical (hormones) response
• Plants react through chemical communication systems only (includes plant hormones)