Answer: c. iris – controls the pupil
Explanation:
The iris, a structure which is primarily made up of smooth muscles. These smooth muscles surrounds the pupil. The light enters the eye through pupil which is a black hole present in the middle of the eye. It allows the light to strike the retina. It controls the size of the pupil this way it helps in regulating the amount of light entering the eye. The pupil becomes wider in the darkness and becomes narrower when the light intensity is more. These actions are controlled by iris.
Its ok to use regular ear cleaner if your ear is filthy. I would recommend limiting the use of saline.
Answer:
A neutral.
Explanation:
Mutation: It is defined as any alteration that occurs in the nucleotides sequence of organisms. It can be beneficial, harmful, and neutral.
A neutral mutation: It is defined as the no harmful and no beneficial effect on the survival and reproduction of organisms. Some examples of neutral mutations are humans with webbed toes, frog having an extra leg, and white kermode bear.
Answer:
Cell, tissue, organelle, organ, organ system.
Explanation:
Cells combined make the tissue,
Tissues combined make the organelle,
Organelles combined make the organ,
Organs combined make the organ system.
The correct answer is option B
The correct pattern of flow of light information and the parts of eyes involved include the following -
Cornea
pupil
anterior chamber
lens
posterior cavity
retina
optic nerve
optic chiasm
