They Don't Have Legs
Have heads and tail ends
Tissues, Organs and Body Systems
Long Narrow Bodies
A worm has sensory organs in its head so that it can respond to food, mates, and predators.
The only way worms can reproduce is through sexual reproduction.
In some certain species, each worm can have both a male and female sex organs.
Worms don't have any brains.
Include tapeworms and planarians
One way digestive system
Roundworms have a digestive system that's like a tube, open at both of its ends.
Roundworms n live in nearly ANY dry environment.
Roundworms have flat bodies.
Most round worms are tiny and difficult to see.
Both A and C
Parasites, hosts, and scavengers
Segmented worms, circulatory system, and roundworms
Flatworms, segmented worms, and roundworms
Here's an interesting quiz for you.