Stimulus And Response: In Depth

Question 1

What is the GENERAL REASON on why ORGANISMS produce a RESPONSE to a STIMULUS?

Answer 1

To ENHANCE the animals CHANCE OF SURVIVAL

Question 2

Describe the simple REFLEX ARC

Answer 2

Stimulus—Receptor—Sensory Neuron—Relay Neuron/CNS—Motor Neuron—Effector e.g Muscles—Response

Question 3

Describe TROPISMS in PLANTS

Answer 3

-GROWTH MOVEMENT of part of a PLANT in RESPONSE to a DIRECTIONAL STIMULUS
-Usually AWAY/TOWARDS the STIMULUS