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EasyZoology
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How many of the following statements is/are correct? A. Simple epithelium is composed of a single layer of cells. B. Hormones are secreted directly into ducts. C. The structure of the cells do not vary according to their function. D. In unicellular organisms, all functions like digestion, respiration, excretion and reproduction are performed by a single cell.
A
One
B
Two
C
Three
D
Four

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