Term
| an animal with a skull and backbone |
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Definition
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Term
| scientists have named over ____ species of animals. |
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Definition
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Term
| An animal without a backbone |
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Definition
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Term
| ____% of the known animal species are invertebrates |
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Definition
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Term
| Animals usually reproduce by _____ reproduction. |
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Definition
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Term
| Name the two types of sex cells |
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Definition
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Term
| An ____ is a combination of two or more tissues. |
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Definition
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Term
| an organism that eats other organisms |
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Definition
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Term
| animals that eat other animals |
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Definition
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Term
| an animal eaten by other animals |
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Definition
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Term
| Color or texture that enables an animal to blend in with its surroundings |
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Definition
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Term
| animals with chemicals that have a bright design |
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Definition
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Term
| behavior that is influenced by genes and doesn't depend on learning or experience |
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Definition
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Term
| behavior that results from experience or observing other animals |
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Definition
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Term
| a period of inactivity and decreased body temperature that some animals experience in winter |
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Definition
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Term
| a period of reduced activity in the summer |
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Definition
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Term
| a ____ clock is an internal control of natural rhythms |
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Definition
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Term
| _____ rhythms are daily cycles such as waking at the same time |
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Definition
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Term
| to find the way from one place to another |
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Definition
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Term
| ____ behavior is the interaction between animals of the same species |
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Definition
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Term
| All social behavior requires _____. |
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Definition
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Term
| special behavior by animals of the same species that leads to mating |
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Definition
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Term
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Definition
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Term
| 4 reasons animals communicate |
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Definition
1. live together
2. find food
3. avoid enemies
4. protect their homes |
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Term
| 4 ways animals communicate |
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Definition
1. smell
2. sound
3. vision
4. touch |
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Term
| visual communication is called |
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Definition
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