Annelids exhibit bilateral symmetry.
Mollusks have reduced coeloms for body cavities. These are made of layers of mesoderm and are used for suspending the mollusk's internal organs.
Annelids are a class of worm. All worms are invertebrates which means they have no backbone. Therefore, annelids have no skeleton at all.
annelids have only 1 foot for example worms and leeches are annelids
Annelids have bilateral symmetry.
coelomates
none
annelids normally have long bodies
Pisces or fish have true internal body cavity.
mantle
Mollusks are soft-bodied animals often covered by hard shells. This group of invertebrates includes a variety of animals; snails, clams, and octopus are the most common. There are more than 85,000 species of mollusks and there is believed to be many more that haven't been identified.
idk i wana no 2 : describe the body structure of mollusks?
Mollusks, a member of the crustacean family, have an open circulatory system meaning blood flows freely within their body cavity. However they still have a three chambered heart. The heart pumps blood through open-ended vessels and the blood simply flows back into the heart on it's own or through incidental muscular contractions of the mollusks body during feeding or moving.
The type of body cavity shared by all mollusks is pseudocoelom is a false statement. The correct answer is coelom.
Pisces or fish have true internal body cavity.
Acoelomate
mantle
That's an animal with a body cavity called a coelom, that's only partly lined by mesodermic tissue. Mostly worms and mollusks.
Gills:)! YOURWELCOME!
Exocrine.
the body cavity between the digestive system and the body wall is completely lined by tissue derived from mesoderm.
the type of respiratory organ mollusks have is GILLS.
Grasshoppers only have one body cavity, that being their mouth. They use their mandibles to pull food apart so they can eat.
abdominal cavity
The undigested waste products does not enter your body cavity. That is called as faecal matter. Scientifically speaking the food you eat is not "Inside" your body cavity. It is always "Outside" the body cavity. You go for extracellular type of digestion. I found it very difficult to teach the same in my dental college class.