AP BIOLOGY

ANIMAL BEHAVIOR

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All of the following are true of a reflex EXCEPT ____
A
the message goes to the brain first.
B
it is an automatic response.
C
the message goes to the spinal cord.
D
it is often a reaction to fright.
Explanation: 

Detailed explanation-1: -Reflexes have four important properties: they require stimulation, they are quick, they are involuntary and they are stereotyped.

Detailed explanation-2: -It is an immediate action taken without much thinking and it does not have our control. The spinal cord is responsible for the response of the body because the impulse has not reached the brain till then. Therefore, the correct answer is option A.

Detailed explanation-3: -The correct answer is Movement of hand. Breathing, Heart-pumping, Salivation, Blinking of eyelids etc. is a reflex action. Movement of hand is can be both voluntary and involuntary. Hence it can’t be a strictly reflex action.

Detailed explanation-4: -Which of the following are true about reflexes? Reflex processing does not require the brain. Reflexes are involuntary. Reflexes respond to stimuli more quickly than voluntary movement.

There is 1 question to complete.