Examine a prepared slide of a plant stem or root at low power and at high power. The small round shapes you see are cells. Decide whether to estimate the size of a plant cell at low power or at high power. Using the diameter of the field of view you choose, estimate and record the size of a typical plant cell.

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the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.