Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: A tissue is a group of connected cells that have a similar function within an organism. More complex organisms such as jellyfish, coral, and sea anemones have a tissue level of organization. For example, jellyfish have tissues that have separate protective, digestive, and sensory functions. Answer: tissue
Solution:
What is a group of connected cells that have a similar function within an organism called?