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Crayfish test review
Rachel's Crayfish review November 16
| Term | Definition |
|---|---|
| molting | When an animal sheds its exoskeleton because it is increasing in size. |
| regeneration | the process a crayfish goes through to replace a lost body part |
| scavenger | an animal that hunts and eats dead plants on animals |
| exoskeleton | the outer hard protective covering that supports the crayfish arthropod |
| swimmerets | small limbs underneath a crayfish abdomen that move water to help breathing |
| enviroment | all the physical conditions that a living thing needs to survive |
| stimulus | An action that causes a response |
| An example of stimulus | When we tapped the crayfish on the back with an eraser |
| response | How an animal reacts to a stimulus |
| An example of response | The crayfish moved when it was tapped |
| Crayfish senses | sight, smell, touch, taste |
| which sense is the crayfish missing? | hearing |
| why do crayfish molt? | Crayfish molt because their bodies get bigger |
| How do crayfish protect themselves from predators? | Crayfish attack with pincers and quickly swim backwards. They get into a defensive posture (stand high on walking legs) or hide. |
| Why can crayfish stay out of the water for long periods of time? | Crayfish can track water under their carapace which keeps their gills moist. |
| What is the difference between a male and female crayfish | The female crayfish has one more set of swimmerets. |
Created by:
smcauliffe
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