Level of Organization in Organisms

Open Ended

Why is it important for living organisms to have different levels of organisation such as cells, tissues, organs, organ systems, and organisms?

Multiple Choice

Which of the following correctly represents the sequence of levels of organisation in animals, from simplest to most complex?

• Cell → Tissue → Organ → Organ System → Organism

• Organism → Organ System → Organ → Tissue → Cell

• Tissue → Cell → Organ System → Organ → Organism

• Organ System → Organ → Tissue → Cell → Organism

Multiple Choice

Which of the following correctly lists the levels of organization in living things from smallest to largest?

• Cells, Tissues, Organs, Organ Systems, Organisms

• Atoms, Cells, Tissues, Organs, Organ Systems

• Tissues, Cells, Organs, Organ Systems, Organisms

• Cells, Organs, Tissues, Organ Systems, Organisms

Open Ended

Explain how cells and tissues are related in the organization of living things.

Multiple Select

Which of the following are examples of organs in either plants or animals?

• Heart

• Leaf

• Neuron

• Pancreas

Multiple Choice

What is the main difference between an organ and an organ system?

• Organs are made of tissues, while organ systems are made of organs.

• Organs are made of cells, while organ systems are made of tissues.

• Organs are the smallest unit of life, while organ systems are the largest.

• Organs and organ systems are the same thing.

Fill in the Blank

A group of organs that work together to perform a specific function is called an ___ system.

Multiple Choice

Which of the following correctly represents the sequence of biological organization from simplest to most complex as shown in the image?

• Cells → Tissues → Organs → Organ systems → Organism

• Tissues → Cells → Organs → Organ systems → Organism

• Organs → Tissues → Cells → Organ systems → Organism

• Organism → Organ systems → Organs → Tissues → Cells

Multiple Choice

Which of the following correctly matches the level of organization with its description?

• Tissue: Made from different tissues working together to perform specific functions

• Organ: Basic structural & functional unit in a living organism

• Organ System: Groups of organs with related functions, working together to perform body functions

• Cell: Group of cells of similar structure working together to perform a similar function

Multiple Choice

What do single celled organisms have that are similar to organs?

• atoms

• organelles

• molecules

• atoms