By: Riley Nickles Richie Edens RN

 Definition: A type of animal that filters the water it lives to get food  Body systems: A sponge can be a square, circle, triangular, etc. they have a symmetry and circulatory system.  Reproduction: Sponges have sexual and asexual reproduction when the buds break they make new sponges  Food: Water is their food. They filter the water. Sponges also make our food  habitat: They live underwater. Like lakes, ponds, and streams. Even at the beach.  Predators/problems: Sponges predators are humans.  adaptations/fun facts: There are about 500 species of sponges. a sponge has two layers of cells. RE

 Definition- An animal that has the ability to sting its prey or predators.  Body System- It has radial symmetry.  Reproduction- Medusa’s (adults) use sexual. Polyps (not matured) use asexual.  Food- Cnidarians are carnivorous animals. They have digestive tissues and one digestive opening. Food goes in mouth and waste comes out mouth.  Habitat- all of them live in the water. Most live in seawater. There is one group of cnidarians that live in freshwater.  Predators/Problems- Sharks, squids, birds, and even humans eat these animals. A problem that we have made to endanger them is pollution because we are destroying their home.  Adaptations/Fun facts- They all have tentacles to sting prey. If you look at one you can see they are almost transparent from the outside. RN

 Definition- An animal with a round tube like body, that has a digestive system with two openings.  Body systems- Roundworms have bilateral symmetry. Roundworms have a nervous system and other simple organs.  Reproduction-Roundworms reproduce sexually.  Food-They have a digestive system with two openings. They eat fungus and parasites.  Habitat- Many types of environments, like a shovelful of soil.  Predators and problems-They do not have predators or problems.  Adaptations and fun facts- There's an to be about 1 million nematode species. Many roundworms harm other organisms. RE

 Definition- An animal, such as a planarian, that has a flattened body, a digestive system with only one opening, and a simple nervous system.  Body System- Bilateral symmetry.  Reproduction- They use sexual reproduction. A male and female mate and then lay eggs.  Food- Flatworms burrow into different creatures and live off of them. They also eat rotting parts of dead plants.  Habitat- Can be found in freshwater streams, lakes, ponds, under rocks, and in mud in the daylight. They can even be found in other animals.  Predators/Problems- Generalists and opportunists eat them. Humans even eat them from time to time in uncooked food.  Adaptations/Fun Facts- If a flatworm is severed in two it regrows the body parts needed on each half. They can survive in many different animals. RN

 Definition-An echinoderm is a invertebrate that has an internal skeleton and spines that are part of its skin.  Body system-Have radial symmetry  Reproduction-Starfish reproduce sexually. Females release millions of egg cells. Some also reproduce asexually.  Food- Starfish eat claims. they can live near the beach to get claims.  Habitat-Only live in the ocean. They could live in the pacific ocean. They could problem live near the beach.  Predators and problems-There birds, seagulls, large fish, and sea otters.  Adaptations and fun facts- Their adaptations help them get enough food. A starfish can grow an entire body with a single arm. RE

 Definition- An animal, such as an earthworm, whose body is made up of connected sections or segments.  Body Systems- They have a circulatory system. They also have a nervous system.  Reproduction- Segmented worms use sexual reproduction. Male and female worms mate, then they both lay eggs. The eggs then form a protective cocoon to protect them.  Food- Segmented worms eat rotting parts of dead plants and insects. They have two digestive openings.  Habitat- They live underground or in the mud and dirt. They come out in the rain a lot to stay moist.  Predators/Problems- Snakes, moles, toads, birds, and even foxes eat them.  Adaptations/Fun Facts- Can move through dirt and mud quickly. They have more than one heart. Can be severed in many different pieces before dying. RN

 Definition-An animal with a soft body and no bones  Body systems-Snails have a nervous, circulatory, and respiratory system. But they do not have symmetry  Reproduction-Snails reproduce sexuality. They lay eggs and sperm into the water.  Food- Snails eat the leaves and flowers of dead plants. They can be garden pests.  Habitat-Some snails live on land and some live in fresh or salt water.  Predators and problems- There predators are humans and other mammals  Adaptations and fun facts- There adaptations are dead plants and alive plants. RE

 Definition- An animal that has a jointed exoskeleton.  Body System- They have circulatory systems. They also have nervous.  Reproduction- Arthropods reproduce sexually. A male and female mate and then the female often lays fertilized eggs from which arthropods hatch from.  Food- Arthropods eat termites, mice, plants, and can be harmful to humans. They have two digestive openings.  Habitat- They can live in virtually every habitat that supports life.  Predators/Problems- We, as humans, are harmful to arthropods to. Some other predators of arthropods have long, sticky tongue's.  Adaptations/Fun Facts- It is very cool that arthropods can live in virtually any environment. They have jointed exoskeletons and can move much like humans can. They are the biggest species of invertebrates with millions of species. RN

 World Book Encyclopedias  Harcourt Brace Science Book RN RE