Question

question 2 of 10
in multicellular organisms, cells that do a specific job are often grouped together into masses or layers that are more complex systems. what are these more complex systems called?
a. organelles
b. tissues
c. body systems
d. organs

Explanation:

In multicellular organisms, cells with specific functions group to form tissues. Organelles are parts of a cell, body - systems are made of multiple organs, and organs are made of different tissues. Tissues are the intermediate level between cells and organs.

Answer:

B. Tissues