Blind spot in human eye is the place where:
A.Cones are absent
B.Rods are absent
C.Both rods and cones are absent
D.Image is not formed
Category: Receptors Mcqs
Organs of Ruffini are excited by:
A.Cold
B.Heat
C.Pain
D.Touch
Which of the following are tangoreceptors in mammals:
A.Meissner’s corpuscles
B.Merckel’s discs
C.Pacinaian corpuscles
D.All of these
Perilymph is a fluid found in the:
A.Utriculus
B.Sacculus
C.Optic capsule
D.Cochlea
If a light source in front of our eyes suddenly becomes bright then:
A.Focus of lens will change
B.Retinal blood supply will be cut off
C.Vitrous humour will expand
D.Pupil will enlarge
Rods of cones in the vertebrate eyed differ in one of the following respects:
A.Rods are actual photoreceptors but cones are not
B.Rods are stimulated by low and cones by high intensities of light
C.Rods given blurred image and cones give sharp visual details
D.Rods give colour vision and cones give black and white images
In a vertebrate eye the chief function of rods and cones is that:
A.The rods are important for vision in bright light and cones for vision in dim light
B.The rods are important for vision in dim light and cones in bright light
C.Both rods and cones are important for vision in bright light
D.Both rods and cones are important for vision in dim light
Simultaneous contraction of skeletal muscles during our movements is ensured by:
A.Interoreceptors
B.Proprioreceptors
C.Exteroreceptors
D.None of these
Rods and cones are present in the:
A.Cornea
B.Lens
C.Retina
D.Iris
How many stimuli from a different source fall on our eye:
A.Light and sound waves
B.Light only
C.Light, sound waves and smell
D.Light, sound waves and tension
