Background Information:
- Earthworms are both male and female, therefore they produce both eggs and sperm.
- Earthworm species vary in what they eat, but through their devouring of fallen leaves and/or soil allows the worms to move nutrients such as potassium and nitrogen into the soil.
- Earthworms breathe through their skin, because they lack lungs or other respiratory organs
- Fun Fact: If an earthworm stays outside in the light for more than an hour, they will die. They may also be in danger if they are either in soil that is too wet or too dry.
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| Mouth: Used for absorbing and consuming nutrients Segment: Important structural functions Setae: Helps the earthworm to anchor through the soil Septum: Helps separate an earthworm's internal cavities into sections of different organs. Genital Pore: Used for self reproduction Clitellum: Egg depository |
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| Intestine: Where enzymes break down food chemically and the blood circulating through the intestine walls absorbs it. Gizzard: muscular organ where food is forced from the crop. The rhythmical contractions cause grains of sand to rub the food particles together. It grinds up food. Crop: thin wall organ that acts as a temporary storage place for food. Hearts: Pumps blood |
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