Tissues are

5 points
a. groups of cells doing the same work
b. groups of organs doing the same work.
c. groups of systems doing the same work.

a. groups of cells doing the same work

wrong

Apologies for the incorrect response. The correct answer is:

a. groups of cells doing the same work

The correct answer is a. Tissues are groups of cells doing the same work.

To arrive at the correct answer, here's how you can reason it out:

Tissues are a fundamental level of organization in multicellular organisms, such as plants and animals. They are composed of groups of cells that work together to perform specific functions. To determine which option is correct, let's analyze each option:

a. Groups of cells doing the same work: Tissues are indeed composed of groups of cells that are specialized to perform a specific function. Each type of tissue consists of cells that have similar structures and work together to carry out a particular task.

b. Groups of organs doing the same work: Organs are formed by the combination of different tissues, each with a specific function. While organs are composed of tissues, tissues themselves are not groups of organs. Hence, option b is incorrect.

c. Groups of systems doing the same work: Systems are composed of organs working together to achieve a specific physiological function. Similar to option b, systems are not made up of tissues; rather, tissues are part of organs.

Therefore, the correct answer is a. Tissues are groups of cells doing the same work.