Coordination

Question 1

What is coordination?

Answer 1

The need to coordinate the activity of specialised cells so that organisms can function effectively

Question 2

What is an example of a body system that can work in isolation?

Answer 2

• Heart beats if placed in the right bathing solution

Question 3

Example of coordination in animals

Answer 3

• Red blood cells transport oxygen effectively, but have no nucleus
• Haematopoietic stem cells maintain constant supply of red blood cells to body
• Muscles contract when supplied with consistent oxygen to complete aerobic respiration

Question 4

Example of coordination in plants:

Answer 4

• Flowering needs to coordinate with seasons
• Pollinators coordinate with plants
• Temperature climates light-sensitive chemicals enable plants to coordinate development with lengthening days which signal approach of spring and summer.

Question 5

Homeostasis:

Answer 5

• In large multicellular organisms, different organs have different functions
• Functions of different organs must be coordinated to maintain a relatively constant internal environment

Question 6

Cell signalling:

Answer 6

• One cell releases a chemical which has an effect on the target cell
  
  • Transfer signals locally –> between neurones at synapses (neurotransmitter)
• Transfer signals across large distances, using hormones.

Question 7

Coordination in plants –>

Answer 7

shoot growth towards light
root growth towards gravity