The world perceived by Matteo is very different than the world ...

[kamilo84]

The world perceived by Matteo is very different than the world perceived by most; he can only see black, white, or shades of gray. What can we conclude about Matteo?
 
  a. His retina is void of at least one type of rod.
  b. His retina is void of at least two types of rods.
  c. His retina is void of at least one type of cone.
  d. His retina is void of at least two types of cones.

Question 2

One theory of color vision is based on the existence of different types of cones for the detection of short, medium, and long wavelengths. What is this theory?
 
  a. the tricolor detection scheme
  b. the primary paradigm
  c. the trichromatic theory
  d. the tiered wavelength model

[mrphibs]

Answer to Question 1

ANSWER:
d

Answer to Question 2

ANSWER:
c

[kamilo84]

TYSM

[hramirez205]

Gracias!