I don't think it's the best answer you could say that it's a living organism that you can find on the outer covering of a tree.
Smooth ER (Smooth endoplasmic reticulum) is a structure (cell organelle) which is primarily associated with the synthesis of proteins, lipids, phospholipids and steroids.
The answer is going to be somatic
Theory because a theory is a well substantiated explanation of how a particular phenomenon works based on the set of facts which had been repeatedly confirmed through observations and experiments. A scientific theory gives reliable account of a phenomenon.
If you want to see something in fine detail, you should focus the light the cornea. The lens works together with the cornea to focus light correctly on retina.
When light hit on retina special cells called photo receptors turn the light into electrical signals. The lens are the clear part of eyes behind the iris that help to focus light and image on retina to see something clearly.Lens is the important part of eye when it comes to focusing light so that we can see perfect clear image.
The retina is the most sensitive part which can effect by more light because retina convert incoming light into electrical impulse.
To learn more about Retina here
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