Marine Worms 1

2. group of nonsegmented parasites with long, slender bodies covered by a thin cuticle; includes hookworms and trichina worms
5. aquatic worm with elongated, unsegmented, flattened body that is brightly colored and tangled in knots, a long proboscis for catching food
7. A parasitic flatworm characterized by the absence of a digestive tract
10. the middle layer of an embryo in early development, between the endoderm and ectoderm
11. A group of often parasitical worms that have bilateral symmetry, a one opening digestive system, and the beginnings of a brain; tapeworm
12. they are parasitic worms, freeliving animals that can infect humans and cause liver disease
15. A fluid skeleton in many soft-bodied invertebrates, including annelids, that allows an organism to change shape but not volume
16. arrangement of body parts so there are distinct left and right halves that mirror each other

1. long, straight, narrow sea worms that use hooks for catching prey. they live near the clear surface which helps them avoid predators
3. thicken and shorten the muscles as they contract (worm squeezes up) attach setae to the soil as an anchor
4. contract and pull worm forward and elongates
6. the long snout of an animal; a nose, especially a prominent one; a tubular organ
8. A segmented worm which include earthworms, polychaetes, and leeches
9. toward the upperside/back of the animal
13. front of the body/nearer to the head
14. Toward the belly of the animal