Question

Tissues are made of a grouping of cells.
a. True
b. False

Answer 1

This answer is True! 
Cells that all work together to do the same job, make up a tissue. 
For example, the skin, is a tissue. It protects the body, and manages it temperature. 
:P

When in doubt, eat a pineapple! <3

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Answer 2

The correct answer is A. True

Explanation:

Tissues are the basic structure of organs in both plants and animals. These are made of groups of specialized cells that have specific biological functions. For example, in animals muscles that support the movement are composed of muscle cells that had a specialized structure and function for this. This also applies to plants that are made of epidermal, vascular and ground tissues. According to this, it is true tissues are made of a grouping of cells as each tissue contains sets or groups of specific cells.