A student examines microscope slides containing different types of epithelial tissue. What is the MOST DIRECT way to differentia
te between types of epithelial tissue? A) Epithelial tissue types may be identified by differences in DNA. B) Types of epithelial tissue are distinguished by different microscope staining techniques. C) Different epithelial tissue may be identified by the presence or absence of a nucleus and other organelles. D) Different types of epithelial tissue may be identified by the shape and overall structure of the cells that make up the tissue.
Answer: D) Different types of epithelial tissue may be identified by the shape and overall structure of the cells that make up the tissues.
Explanation:
Epithelial cells form a layer structure which covers most of the surfaces of the body. These cells perform variety of functions and exhibit different shapes, size and arrangement which makes up different tissues. For example columnar tissues (column like cells), cuboidal tissues (cube like cells) and others.
Hence, these epithelial tissues can be identified in a microscopic slide.
<h3><u>The Food webs are preferred over food chains for representing the flow of energy in an ecosystem for the following reasons:
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The food webs are higher in complexity when compared to food chains and also, in food web, more than one primary producers is present which increases the 'flow of energy' in the ecosystem.
Food web represents the real life better than the food chains do.
Food web shows many different paths through which the organisms can be connected.
