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Science U8
| Question | Answer |
|---|---|
| What is ethology? | the study of animal behavior, particularly in animals' natural environment |
| Ants help tend, protect, and transport aphids, and aphids produce honeydew for ants. | Mutualism |
| What is animal courtship? | the act of choosing a mate |
| What is symbiosis? | the special way different species of animals live together and depend on each other |
| What is commensalism? | a relationship between two animals in which one animal benefits, but the other is unaffected |
| How does an anglerfish attack its prey? | It has an illuminated lure (bioluminescence) for other fish; when they come by, the anglerfish snatches them in its mouth. |
| An egret lives near cattle and eats insects stirred up by the cattle's grazing. | Commensalism |
| What is a circadian rhythm? | a 24-hour biological clock that controls behaviors such as sleeping and waking |
| Many animals are ________. Their biological clock tells them to sleep at night and be awake during the day. | diurnal |
| Why must external fertilization take place in water? | so that the sperm can swim to the egg cells quickly and easily |
| Something that causes an animal to change his behavior, such as the weather turning colder is called a _____. | stimulus |
| What is a cyclic behavior? | behaviors that occur in a repeated pattern |
| As ants go to find food, the lead ant releases a special chemical called ______, which serves as a form of communication and enables the ants to find their way home. | pheromone |
| Animals' natural tendencies or inclinations, called _______, are inherited through their genes and are present at birth. | instincts |
| How do animals get certain instincts? | Instincts are passed from parent to child through genes. |
| What animals use to communicate is known as their: | senses |
| What kind of egg is produced by a fish or amphibian that is basically a lump of jelly with a ball of cells inside? | spawn |
| What is mutualism? | a relationship between two animals in which both animals help and benefit each other |
| What kind of animal covers its egg with an egg case, also called mermaid's purse? | shark |
| What is a reflex? An example is when a tiny aphid feels a stroking motion, it releases special nectar for the ants that stroke it. | an automatic, involuntary response to a stimulus |
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