Incredible InvertebratesKira PriceOlivia SchroederHannah Hornaday

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Porifera/SpongeExample: Venus-flower-basket Sponge Definition~ Poriferas are one type of animal that filters food from

the water it lives in. Systems/Symmetry~ It does not have a circulatory system. It does

not have any symmetry because it can grow to be any size or shape. It does not have a repertory system but it does have nerves.

Reproduction~ They reproduce asexually by breaking off limbs and the limbs grow to be the same kind of animal. They also produce sexually by making eggs and they float away to be fertilized and grow.

Food~ Poriferas eat by filtering the sea water through their pores outside. They eat the food partials in the sea water.

Habitat~ These interesting creatures can live in almost any body of water, deep or shallow. They are also usually covered in moss.

Problems~ Poriferas have many problems for them. An example is people use sponges to make things to clean our bodies.

Nematodes/RoundwormsExample: Ascaris Definition~ Nematodes are worms with round tube-like

bodies. Systems/Symmetry~ They have bilateral symmetry.

Muscles run length wise. They have nerves with a brain and simple organisms.

Reproduction~ They sexually reproduce by using it’s sex cells after they are fertilized.

Food~ Their digestive system has two openings, one is to put food in and the other is to get rid of wastes.

Habitat~ They live in dirt or other animals bodies and live off of the animals insides.

Problems~ The predators of these animals die if they eat them because they are poisons to the animal.

MollusksExample: Snail Definition~ Mollusks are animals with soft bodies and no bones. Systems/Symmetry~ They have a circulatory system using their

heart. They have a digestive system with two openings, one for wastes and one for eating. They have radial symmetry. They also have nerves to help them move quickly or hide from predators. They also have a repertory system, some use gills and some use lungs.

Habitat~ These cool animals can live in almost any body of water. Reproduction~ They reproduces asexually by releasing eggs into

the water to get fertilized as they float away. Food~ One of their food items is clams by using their tongue to get

the food to their mouth. They also eat other marine animals by using tentacles to get food to their mouth.

Predators~ These animals eat each other and have to look out for other ocean animals that want to eat them.

EchinodermsExample: Sea Urchin Definition~ Echinoderms are invertebrate animals with

endoskeletons and spines that stick out from their bodies. Systems/Symmetry~ They have radial symmetry with five

arms on each side. They have nerves to help I move and feed. They have a different and undefined circulatory system. They also have a respitory system using lungs.

Reproduction~ They reproduce sexually by using sex cells to produce eggs. Some reproduce asexually by forming new parts.

Food~ Mollusks eat by using their tube feet and walking to the prey.

Habitat~ They live in the ocean and some connect to the floor on reefs.

Predators~ These animals eat each other and fish eat some echinoderms.

Sources Harcourt Science Starfish by: Rebecca Stefoff Sea Stars and Other Echinoderms Seashells, Crabs, and Sea Stars by:

Christiane Tibbitts Sea Anemones Science Under the Sea

by:Rourke

Invertebrates

InvertebratesKira Price Olivia SchroederHannah Hornaday

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Echinoderms Example-Sea urchinDefinition/Description-An invertebrate that has an internal skeleton and spines that are part of its skin. Body Systems-They have radial symmetry with five pared rows

of feet extending symmetry from the mouth.o Reproduction-Echinoderms reproduce sexually, females

release millions of egg cells, and males release millions of sperm.

Food-They eat allege and their undersides have teeth which they eat with.

Habitat-The Ocean Predators and problems- We used them for various medicines

and artifacts against poison and we can also eat them as food. Adaptions and fun facts- An adaption is it has spines.

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MollusksExample-octopus

Definition/Description- AN animal with a soft body and no bones

Body Systems-Mantle, lies between its shell. Tentacles, an organ called radula

Reproduction- Mollusks reproduce sexually. They release eggs and sperm into the water, where the eggs are fertilized.

Food- They have a radula shape like a tounge, coated with teeth so they can eat6 through hard surfaces like clam shells so they can get food.

Habitat- Ocean floor Predators and problems- Mollusks such as snails burrow into the

sand to hide. Adaptions and fun facts-Mollusks are intelligent, their brains

are well developed. A squid can squirt ink to hide.

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Flat WormsExample-Hookworms Definition/Description- An animal such as a planarian, that has a

flattened body, a digestive system with only one opening, and simple nervous system.

Body Systems- A planarian has body organs made up of tissues, it has a sense organ in its head, two nerve cords run down the length of its body.

Reproduction- Planarians have reproductive systems with sex organs and can reproduce by mating and laying eggs.

Food- The tube near the middle of the underside of the planarian has a mouth where it eats food and push out wastes.

Habitat-They live in freshwater, streams, lakes and ponds. During daylight they can be found under rocks or in mud.

Predators and problems- they can re-grow there self if they get open apart

Adaptions and fun facts- They can regenerate body parts that have been cut off.

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CnidariansExample-Coral Definition/Description- AN animal with tentacles that have the

ability to sting its prey or predators. Body systems- Cnidarians have cells that are organized into

tissues instead of organs. The outer layer tissues protects the organisms.

Reproduction- Cnidarians reproduce both sexually and asexually

Food- Cnidarians are carnivorous, (meat eating) after they kill there prey is stung it pulls it towards it mouth.

Habitat-They live in water, most live in sea water Predators and problems- Cnidarians grab there prey with their

tentacles and sting it (kill) with poison found in its tentacle cells Adaption and fun facts- Their body parts are arranged around

a center.

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Sources THE 6TH GRADE SCIENCE BOOK DICTIONARY

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invertebratesBy: Kira price Hannah Hornaday Olivia Schroeder

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Cnidariansexample: coral/jellyfish Definition: an animal with tentacles and

that have the ability to sting its prey /predators Body systems: digestive system- has a stinger to suck

prey up to its mouth Body systems: sexual- releases eggs they turn in larvae

and they hatch Food: tentacles pull food to mouth waste leaves through

their mouth Habitat: most live in sea water Predators/problems: starfish, sea slugs, parrots, and

marine turtles Adaptations/fun facts: one adaptation is its stinger

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Nematodes/roundwormsexample: sheep liver fluke Definition: an animal with a tube like body that has a

digestive system Body systems: digestive system- has a stomach and

digestive glands Reproduction: sexual reproduction- it fertilizes its eggs Food: has a mouth that eats the food it has two

digestive openings Habitat: some live in soil or dirt or some can live in pigs Predators: pig- if u eat undercooked pork they can get

into you Adaptations: it has some muscles

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Molluskexample: Snail Definition: an animal with a soft body and no bones Body systems: circulatory- the have a heart, digestive-

the have 2 openings, respiratory- gills/lungs Reproduction: sexually- release eggs into water to get

fertilized Food: clams by using tongue to get inside of their shells Habitat: some live in saltwater some live in freshwater

some live on the floor of streams Predators: some eat other mollusk and other marine

animals Adaptation: muscles to move quick and some squirt ink

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Echinodermsexample: sea urchin

Definition: invertebrates that have internal skeletons and spines sticking out from bodies

Body systems: nervous system to enable its movement

Reproduction: sexually- releases cells to fertilize eggs /asexually- makes new parts

Food: some eat each other, and fish at the bottom of the ocean floor

Habitat: some live in the ocean and some connect to objects on the bottom of the ocean floor

Predators: sigils, fish, birds, and mammals Adaptation: get oxygen from sea water have tubed

feet. Spines stick out. HH

Sources: Cnidarians: 6th grade science book Nematodes: 6th grade science book Mollusk: 6th grade science book Echinoderms: 6th grade science

book

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