Levels of Organization in Organisms

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 of these would be an example of the organism level of organization?

• dog

• tail

• fur

• digestive system

Which level of organization would be considered the most specialized and complex?

• Cell

• Tissue

• Organ System

• Organism

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

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.

In order to bite, chew, and swallow food which organ systems have to work together to make this happen?

• cells, tissues, and organs

• circulatory and muscular systems

• muscular system, nervous system, and digestive system

• muscular system, respiratory system, and heart

Skin is made of many cells that are similar is structure that work together. Therefore skin is considered a

• cell

• tissue

• organ

• organ system

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.

Our heart, digestive system, and muscles that connect to our bones are all made of different types of muscle tissue. What is the main function of all muscle tissue?

• To help digest food.

• To help move the organism from one place to another.

• To cause movement in different parts of the body.

• To circulate nutrients and wastes throughout the body.