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Lecture 11
Flatworms, Annelids, Nematodes & Mollusks
| Term | Definition |
|---|---|
| No cavity | Flatworms have this type of body cavity. |
| Gastropods | Snails and slugs. |
| Bivalves | Oysters, clams, mussels and scallops. |
| Cephalopods | Squid, octopuses, cuttlefishes and nautiluses. |
| Penis Fencing | Sexual reproduction performed by flatworms. |
| Hermaphrodites | Flatworms are these where they produce both the sperm and the egg. |
| Proglottids | A tapeworm is spread by these by breaking off and exiting the host in the feces. |
| Cephalopods (octopus) | The most intelligent invertebrate. |
| Annelids | Segmented worms are referred to as this. |
| Why are leeches able to suck so much blood from their victims without the victim knowing? | Anesthetic in saliva. |
| How can leeches be used medically? | Prevent blood clotting when reattaching fingers. |
| What is the foot of the cephalopods? | Arms (tentacles). |
| What type of organism causes the disease Elephantiasis? | Roundworms. |
| What kind of digestive system do earthworms have? | Complete. |
| What type of circulatory system do earthworms have? | Closed. |
| Do earthworms have a brain? | Yes, simple. |
| How do clams move? | Burrow in the sand. |
| How do (young) scallops move? | Clap their shells. |
Created by:
bngrimes1995