Crayfish

The crayfish used its sense of __________________ to identify Mr. Scaduto's hand as possible danger.

• Smell
• Hearing
• Sight
• Behavior

The ___________ the crayfish made to the movement of Mr. Scaduto's hand was when it raised its pincers in defense. 

• Response 
• Sense
• Stimulus
• Noise

The stimulus in this experiment is .........

• the crayfish raising its pincers
• Mr. Scaduto placing the crayfish in the plastic box
• the crayfish slowly walking around
• Mr. Scaduto's hand moving toward the crayfish

_______________ is the process of shedding and replacing the exoskeleton of a crayfish.

• Molting
• Hibernating
• Sleeping 
• Respiration

The process of RE-growing lost body parts such as walking legs is known as 

• REgeneration
• Respiration
• Hibernation
• Molting

When do crayfish lay eggs in the North? 

• Winter
• Spring
• Fall
• Summer

When do crayfish lay eggs in the South? 

• Winter
• Spring 
• Summer
• Fall

Crayfish usually live in cold water. They can stay out of water for short periods of time ________________

• to molt
• to hibernate
• to look for a mate
• as long as their gills stay wet, so they can breathe

Which sense are most important to the crayfish? 

• taste and hearing
• taste, hearing, touch
• taste, hearing, sight, and touch
• taste, sight, and touc

How are male and female crayfish different? 

• Female crayfish have larger eyes
• Male crayfish have larger claws
• The swimmeret closest to the walking legs are larger on the female than on the male
• The swimmerets closest to the walking legs are larger on the male than on the female