Unit 2 Lesson 4 science quiz

The (a)   system interacts with the (b)   system to move a person's arms.

• muscular

• skeletal

• excretory

• digestive

Which body systems interact to give you the energy for exercise?

• digestive/excretory

• circulatory/respiratory

• muscular/skeletal

• digestive/circulatory

A scallop has as many as 100 bright blue eyes along the edges of the valves. What is the best explanation for having so many eyes?

• The scallop is able to detect the best time to reproduce

• The scallop is able to detect predators from many directions

• The scallop is able to detect a mate while swimming

• The scallop is able to detect changes in weather conditions

Scallops use their shell valves for feeding and movement. A scallop opens its valves when it detects a (a)   nearby. It moves by clapping its valves together when it identifies a (b)   nearby.

• food particle

• predator

• prey

• water