Segmented Worms

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Segmented

Worms

Ryan H., Vivian S., Kelsie S.

Describe the Body of a Segmented Worm

Segmented worms have long and narrow bodies made of many linked sections called segments.

These worms also have a head end and a tail end, meaning they are bilateral symmetry.

Some of the segmented worms look like flatworms and roundworms, which are: cylindrical bodies and jelly-like.

Method of

Reproduction

Segmented worms can reproduce sexually and asexually.

When a segmented worm reproduces sexually, it meets with another worm in order to mate and exchange sperm.

On the other hand, when a segmented worm reproduces asexually, it would break into pieces to duplicate.

Feeding Methods

Segmented worms are scavengers, they search for food such as: soft fruit, decayed plants, and animal remains.

On damp nights, these worms come up and out of their burrows to begin their scavenger hunt.

When the worms find food, they drag it down into their burrows and eat it.

Defense Methods

Segmented worms have sense organs in their brain, causing them to detect moving objects quickly, and they can send messages back and forth to each other.

When the worm senses vibrations of footsteps, they quickly go to their burrow underground, and hide for protection.

Some of these worms sit-&-wait in their burrow and they are ready to attack any animal that comes too close.

Movement

Segmented worms move through their burrow by using their well-developed muscles.

The worm’s stiff bristles stick out from each of the worm segments.

In order to crawl forward, the worm sticks it’s bristles in the ground and pulls itself along.

The Closed

Circulatory System

Segmented worms have a closed circulatory system, like humans.

The closed circulatory system can move blood around an animal’s body much more quickly than an animal with an open circulatory system.

The blood quickly carries oxygen and food to the cells. Blood only moves within a connected network of blood vessels.

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