Antagonistic center-surround organization means that a. ...

[c0205847]

Antagonistic center-surround organization means that
 
  a. photoreceptors in the fovea will suppress input from photoreceptors in the periphery of the eye.
 b. photoreceptors in the periphery of the eye will suppress input from photoreceptors in the fovea.
 c. light falling on the center of a receptive field has the opposite effect than light falling on the surround.
  d. light falling on the center of a receptive field has the identical effect as light falling on the surround.

Question 2

Shivering and blood vessel constriction
 
  a. dissipate heat in ectotherms.
 b. dissipate heat in endotherms.
 c. generate and conserve heat in ectotherms.
  d. generate and conserve heat in endotherms.

[sabina576]

Answer to Question 1

c

Answer to Question 2

d

[c0205847]

TYSM

[dyrone]

Thanks for the timely response, appreciate it