The amount of light entering the eye is regulated by the _______________?

Related Mcqs:

1. In bright light, the iris_______and the pupil________to control the amount of light entering the eye.

   A. Expands; constricts
   B. Constricts; expands
   C. Focuses; constricts
   D. Constricts; focuses

2. The muscle fibers of the iris can increase or decrease the amount of light entering the eye by expanding or contracting the ______________?

   A. lens
   B. cornea
   C. pupil
   D. fovea

3. Kim is trying to thread a needle, but the light is fairly dim. Due to the lack of light, the part of her eye that will help most in threading the needle is ________________?

   A. cones
   B. rods
   C. lens
   D. cornea

4. A psychologist watches the rapid eye movements of sleeping subjects and wakes them to find they report that they were dreaming. She concludes that dreams are linked to rapid eye movement. this conclusion is based on:

   A. pure speculation
   B. direct observation
   C. deduction from direct observation
   D. prior prediction

5. When light changes from bright to dim the iris of the eye ________________?

   A. dilates
   B. constricts
   C. thickens
   D. remains the same

6. The light-sensitive inner surface of the eye, containing the rods and cones, is the ______________?

   A. optic nerve
   B. cornea
   C. retina
   D. iris

7. The receptor of the eye that functions best in dim light is the ______________?

   A. fovea
   B. ganglion
   C. cone
   D. rod

8. If the human eye was not responsive to differences in the wavelength of light, we would not be able to perceive differences in:

   A. Intensity
   B. Color
   C. Purity
   D. Brightness

9. Consider this sequence: (1) food, (2) salivation with food (3) light with food, (4) salivation with light. This procedure for presenting stimuli and observing responses with dogs is based on Pavlov’s experiments, and represents which sequence of classical conditioning?

   A. Unconditioned stimulus, conditioned response, conditioned stimulus, unconditioned response
   B. Conditioned stimulus, conditioned response, unconditioned stimulus, unconditioned response
   C. Unconditioned stimulus, conditioned stimulus, unconditioned response, conditioned response
   D. Unconditioned stimulus, unconditioned response, conditioned stimulus, conditioned response
   E. Conditioned response, conditioned stimulus, unconditioned response, unconditioned stimulus

10. The light around the movie marquee flashed on-and-off in succession However, Jamil did not perceive them as separate lights flashing, but instead saw a continuous band of light moving around the edge of the marquee. Jamil’s perception illustrates:

    A. Feature detection.
    B. Bottom-up processing
    C. Pre-attentive processing
    D. The phi phenomenon