Incredible Invertebrates Kira Price Olivia Schroeder Hannah Hornaday KP

Porifera/Sponge Example: 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/Roundworms Example: 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.

Mollusks Example: 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.

Echinoderms Example: 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

Kira Price Olivia Schroeder Hannah Hornaday OS

Echinoderms Example-Sea urchin Definition/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. OS

Mollusks Example-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. OS

Flat Worms Example-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. OS

Cnidarians Example-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. OS

Sources  THE 6 TH GRADE SCIENCE BOOK  DICTIONARY OS

invertebrates By: Kira price Hannah Hornaday Olivia Schroeder HH

Cnidarians example: 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 HH

Nematodes/roundworms example: 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 HH

Mollusk example: 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 HH

Echinoderms example: 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: 6 th grade science book  Nematodes: 6 th grade science book  Mollusk: 6 th grade science book  Echinoderms: 6 th grade science book HH

Thanks For Watching! The End OS KP HH