5th Grade Crayfish Unit Test Review

The process of shedding and replacing the exoskeleton of a crayfish.

• regeneration
• respiration
• hibernating
• molting

The process of re-growing lost body parts such as pincers and walking legs.

• hibernation
• regeneration
• molting
• respiration

Crayfish are able to stay out of water for short periods of time?

• They can go for long periods without breathing

• They have both lungs and gills

• They have lungs to breath air

• Their gills remain wet, they can breathe oxygen from the air

In a scientific experiment, what is the variable?

• the observation

• the conclusion

• the thing that is changed

• the hypothesis

When an animal's body temperature changes with the temperature around it.

• Sensing

• Cold Blooded

• Warm Blooded

• Exothermic

Crayfish appendages near the mouth that help to circulate water over the gills.

• Swimmerets

• Maxillae

• Antennae

• Maxilliped

The smaller sensory appendages on the head of the crayfish. This is part #2

• rostrum

• antennae

• antennules

• cephlothorax

The section of the crayfish between the thorax and telson tail made up of (6) flexible parts. This is part #7

• swimmerets

• cephlothorax

• abdomen

• head

What does Humane Treatment mean?

• Treating objects like they are human

• Treating a living thing in a way that keeps it from suffering

• Being human

• An organism that has human characteristics

In order to survive crayfish need?

• sunlight, soil and air

• sunlight, food and water

• food, water and air

• heat, water and soil