A. dark adaptation
B. light adaptation
C. coding of contrast
D. coding of light intensity patterns
Related Mcqs:
- 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 - According to the principle of relative brightness, if one of two identical objects reflects more light to your eyes it will be perceived as _______________?
A. larger
B. smaller
C. nearer
D. farther away - When light changes from bright to dim the iris of the eye ________________?
A. dilates
B. constricts
C. thickens
D. remains the same - Which of the following explains why a rose appears equally red in bright and dim light?
A. the Young-Helmholtz theory
B. the opponent-process theory
C. feature detection
D. color constancy - Waqas looked directly into a very bright light and damaged his retina. The ophthalmologist has told him that he has sustained massive damage to his rods but for the most part his cones have not been affected. One change that you could predict for Waqas’ vision is that he will now have:
A. more accurate depth perception
B. poor vision in bright illumination
C. poor vision in low illumination
D. poor peripheral vision - Petra locked directly into a very bright light and damaged her retina. The ophthalmologist has told her that she has sustained massive damage to her cones, but for the most part her rods have not been affected. One change that you could predict for Petra’s vision is that she will now have:
A. Poor vision in bright light
B. No color vision
C. Poor vision in low illumination
D. More accurate depth perception - If the gene for blue eyes is recessive and if a child have blue eyes, which of the following must be true?
A. both parents have blue eyes
B. the child’s sibling has brown eyes
C. each parent has at least one blue eye gene
D. at least one parent must have blue eyes - One boy has brown eyes. His twin brother has blue eyes. This information enables a person to conclude that the two ______________?
A. are identical twins
B. are fraternal twins
C. are monozygotic
D. have blue-eyed parents - A hormone whose over secretion in pregnancy stimulates melanocytes in skin to produce brown pigment melanin which darkness the skin is produced by:
A. Anterior pituitary lobe
B. Median pituitary lobe
C. Posterior lobe
D. Both a & b - 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
