Question

question 5 of 10
what are tissues made of?
a. groups of organs
b. groups of cells
c. groups of reflexes
d. groups of systems

Explanation:

In biology, tissues are defined as groups of cells that work together to perform a specific function. Organs (A) are made of tissues, not the other way around. Reflexes (C) are actions, not structural components. Systems (D) are made of organs. So, tissues are groups of cells.

Answer:

B. Groups of cells