which type of photoreceptor is used in dim light condition, for example at dusk?
rods
20
which type of photoreceptor is used in bright light condition?
cones
20
why do animals that hunt at night not have colour vision?
Colour vision depends upon cones and these are only activated by high light intensity, i.e. during the daytime.
25
Bahasa version
anak kambing saya
25
outline the processes that take place in pupil reflex when you leave a brightly lit room and enter a dark room. name the receptor and effector involved
The radial muscles in the iris in your eyes contract, the circular muscles relax, and your pupils dilate, increasing the amount of light entering your eyes. The
25
Nervous pathway in pupil reflex?what is the receptor? what is the effector?
stimulus (change in light intensity)-receptor(retina)-sensory neurone-brain-motor neurone-effector(iris)