Levels of Organization in Organisms

Which statement helps to explain how the respiratory system and circulatory system work together?

• The respiratory system helps to get oxygen into the body and the circulatory system helps transport it throughout the body.

• The circulatory system gets oxygen into the body and the respiratory system helps transport it throughout the body.

• The circulatory system needs blood that is produced by the respiratory system.

• The respiratory system keeps the circulatory system organized.

Which statement best describes the relationship between the structure and function in an organism?

• It refers to the different types of tissues within an organism.

• It refers to the jobs that different organs and tissues have.

• It refers to the location of different tissues, organs, and organ systems.

• It refers to how the shape and size of a structure helps it best perform its job.

A students is studying levels of organization in birds. Which level would describe a bird's stomach?

• cell

• tissue

• organ

• organ system

Veins are blood vessels that carry blood to the heart. They are made of different tissues. What level of organization are arteries?

• cells

• tissues

• organs

• organ systems

Which level of organization is the largest and most complex?

• Cell

• Tissue

• Organ

• Organ System

• Organism

Which system breaks down food into minerals that your body can use?

• excretory

• circulatory

• respiratory

• digestive

Which Human Body System circulates blood to all the working parts of your body?

• Respiratory System

• Circulatory System

• Digestive System

• Nervous System

Which Human Body System reacts to your 5 senses to send messages to your body?

• Respiratory System

• Circulatory System

• Digestive System

• Nervous System

Which statement explains why a blood cell would be different than a muscle cell?

• They are found in different parts of the body.

• They are only found in animals, not in plants.

• Muscle cells must work together to perform a function.

• Blood and muscle have different jobs to do in organisms.

Which level of organization would be considered the least complex or specialized (meaning it can't perform many different jobs on its own).

• cell

• tissue

• organ

• organ system