Invertebrate Project
By
Xena Mangler
Hannah Smith
Parifera/Sponge
Venus
Flower-basket
 Definition: A type of animal that filters the water that it lives in
to get food.

Body Systems: Not symmetrical, sponges don’t have nervous,
digestive, or circulatory systems, they mostly rely on constant
water flow through their bodies.

Reproduction: Most often sponges reproduce asexually &
sexually. Buds and Branches grow from a parent sponge. These
buds break off and grow into new sponges.

Food: Sponges don’t eat, a current flow through their bodies
gives them food, water, and oxygen. The water also helps remove
waste.

Habitat: Lakes, ponds, streams, found on growing rocks or sticks
under water.

Predators/Problems: One problem that kills sponges is that
humans use sponge skeletons to make loofahs and other
household items.

Adaptations/Fun Facts: Sponges can be anywhere in size from
1cm. to 2m. Water flowing inside of sponges is what keeps them
alive.
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Sponge Images
XM
Platyhelminthes
Planarian
 Definition: An animal such as a planarian, that has a
flattened body, a digestive system with one opening, and a
simple nervous system.
 Body Systems: Usually 30 mm. 2 nerve cords run down the
length of its body. It has a mouth and the end of a long tube.
Body organs made of tissues.
 Reproduction: Have sex organs and can reproduce by mating
and laying organs. They can regenerate body parts that have
been cut off.
 Food: Planarians have a tube on their underside where they
suck food into.
 Habitat: They live in freshwater streams, lakes, and ponds.
They stay out of light by hiding under rocks.
 Predators & Problems: Some fish might eat planarians.
 Adaptations & Fun Facts: Their habitat structure helps them
survive, they stay out of light, or under something during the
day.
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Platyhelminthes Images
XM
Annelids
Earthworm
 Definition: An animal, such as the earthworm , whose
body is made up of connected sections, or segments.
 Body Systems: Five enlarged tubes act as an earthworms
heart. The tubes pump blood through the major vessels
of its body.
 Reproduction: Earthworms have both male and female
sex organs, after worms mate, both partners lay eggs
and produce a slimy covering that forms a cocoon
protecting the eggs.
 Food: Food is taken through the mouth, and stored in a
sac.
 Habitat: earthworms live in rich soil and their “waste”
enriches the soil.
 Predators & Problems: Humans use earthworms as
fishing bait. Snakes, birds, and rodents eat worms.
 Adaptations & Fun Facts: Earthworms can grow up to 11
feet long. They breath through their skin.
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Annelids Images
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Arthropods
Arachnids
 Definition: An animal that has a jointed exoskeleton and
jointed limbs.
 Body Syetems: two openings, has a circulatory system, and a
brain. Has well-grown organs for sight, sound and touch.
 Reproduction: Arthropods reproduce sexually. Females lay
fertalized eggs.
 Food: Arachnids get their food with their fangs or pinchers.
Arachnids eat mostly anything.
 Habitat: Almost all arachnids live on land. There are a lot of
Arachnids that live on land, than Arachnids that live any
other place.
 Predators & Problems: Very little protection to predators. If
they get threatned by an animal, they have sharp body parts
that eject poison.
 Adaptations & Fun Facts: Spiders, scorpions, ticks, and mites
are Arachnids. They have 8 legs and no antena. They have 18 simple eyes. Some species are eyeless.
XM
Arthropods Images
XM
Invertebrate project
By
Hannah Smith & Xena Mangler
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Cnidarian
(ex: Jellyfish)
 Definition/Description: An animal with tentacles that have the
ability to sting its prey or predators. (bowl shaped, tiny hooks,
barbs)
 Body Systems: Symmetry: Yes, radial symmetry.
 Reproduction: Both sexual and asexual. Releases sperm into
water. Egg cells develop into larvae that can move into water
develop into polyps. Then break off away from parents.
 Food: They sting their prey with poison. They're carnivores. And
they eat and poop out of their mouth.
 Habitat: They live in the water, most of them in sea water.
 Predators & Problems: The animal predators are sharks. The
manmade predators are boats.
 Adaptations & Fun facts: Their poison protects them, The word
cnidarian comes from a Greek word that means ‘sting’.
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Cnidarian picture
(ex: Jelly fish)
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Nematodes
(Ex: hookworm)
 Definition/Description: An animal, with a round tube-like
body, that has a digestive system with two openings.
 Body Systems: Two openings. One end is the mouth the
other is where it poops. They have muscles.
 Reproduction: They are sexual. They also have sex organs
that enable it to reproduce sexually.
 Food: They feed on the animal that they live in.
 Habitat: They live in other animals and sometimes humans.
They can also live in soil.
 Predators & Problems: Predators could be people who eat
undercooked meat.
 Adaptations & Fun facts: People can eat hookworms.
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Nematodes
(ex: Hookworm)
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Mollusks
(Ex: clams)
 Definition/Description: An animal with a soft body and no bones.
(Shell, soft body and gills)
 Body Systems: They’re filter feeders. They have kidneys , muscles,
nerve chords, intestines, and gills.
 Reproduction: They are sexual. They release eggs and sperm into
the water, where eggs are fertilized, then they develop into a larvae
then they become an adult.
 Food: They eat food particles. Take them in and push out water
through organs called siphons.
 Habitat: They live in the Southern Pacific Ocean. They can also live
in the Coral Reef.
 Predators & Problems: Predators could be the people who eat clams,
lobsters and starfish.
 Adaptations & Fun facts: The word mollusk means soft in Latin.
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Mollusks
(ex: clams)
.
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Echinoderms
(ex: starfish)
 Definition/Description: An invertebrate that has in internal
skeleton and spines that are part of its skin. (Suction cup,
tubed feet)
 Body Systems: They have radial symmetry. They have no brain
and they have a nerve system.
 Reproduction: They are sexual and asexual. Their arms have
sex organs. The females release millions of egg cells, and males
release millions of sperm. Eggs hatch into larvae.
 Food: They wrap their arms around it’s prey using their suction
cups.
 Habitat: They live in the ocean.
 Predators & Problems: People eat starfish.
 Adaptations & Fun Facts: Echinoderms means ‘spiny’ and ‘skin’
in Latin.
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Echinoderm
(ex: Starfish)
.
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Resources
Harcourt
Science Book
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