Porifera, Cnidaria, Worms

Phylum Porifera

The Phylum name for all Sponges

Phylum Cnidaria

Aquatic organisms that have Stinging cells called Cnidocytes

Examples of Members of Cnidaria would include

Jellyfish, Sea Anenomes, Hydra, Corals

One reason members of the Phyla Porifera are important to our world is because they

Filter aquatic ecosystems and help keep it clean.

Characteristics unique and common among all members of Porifera include

Asymmetry, Porous (full of holes), Sessile (don't move in mature form), Reproduce Sexually or by Regeneration, Rely on cellular digestion

Porifera

The phyla that these organisms belong to would be

Cnidaria

This organism would belong to the phyla

Characteristics unique and common to all Cnidarians include

Radial Symmetry, Tentacles, Cnidocytes, Live in Aquatic Habitats, Have a Gastrovascular Cavity, Reproduce Sexually, Have one of two body plans - Medusa or Polyp, Carnivorous

Cnidaria

This organism would belong to the phyla

Cnidarians are important to the world because they

Are the builders of some of the most biodiverse aquatic ecosystems on the planet (e.g. coral reefs). Others are free ranging predators and helpful in population control, while some are a food source for other organisms.

Cnidaria, Polyp

This aquatic organism belongs to the Phylum ____________________ and displays a characteristic body plan common to this phyla called the ____________________ stage.

Medusa

This Jellyfish is displaying the body form known as the __________________.

Platyhelminthes

The phyla name for worms that are flat in body plan.

Characteristics common to all members of the Platyhelminthes include

Acoelemates (no body cavity), Can be parasitic, Rely on diffusion to exchange gases and waste, can be parasitic or free living scavengers, are hemaphroditic. Reproduce sexually or asexually (fission)

The three classes of Platyhelminthes

Turbellaria, Cestoda, Trematoda

Platyhelminthes, Turbellaria

This planarian would be classified into the Phylum ____________________ and the Class ________________.

Platyhelminthes, Cestoda

This tapeworm would be classified into the Phylum _____________________ and Class _____________________

Platyhelminthes, Trematoda

This prepared slide of a Sheep Liver Fluke (parasitic flat worm) would be classified into the Phylum ____________________ and the Class ______________________.

Members of the Phylum Platyhelminthes are important to the planet because they

Help keep populations of algae, protists, and other microscopic organisms in check. Some act as parasites and can also play a role in population control.

Vermiform

Term referring to any organisms that has a worm-like body structure.

Phylum Nematoda

Members of this Phylum are round, unsegmented worms.

Nematoda

This worm would be classified into the Phyla __________________________.

Characteristics unique to and common among members of the Phylum Nematoda include

Vermiform body plan (worm-like), Have definitive sexes (male/female worms), Reproduce Sexually, Have a complete digestive tract, Pseudocoelemates, Round and smooth in nature

Members of the Phylum Nematoda are important to the planet because they

Help to cycle nutrients (Nitrogen) in soil, keep bacterial and protozoan populations under control. Some are parasitic and can keep insect populations under control as well.

Annelida

Members of this phyla are round, segmented worms such as earthworms and leeches.

Annelida means

Little Rings (referring to their segmentation)

Characteristics unique to and common among all organisms in the Phylum Annelida would include

Segmented rings, True Coelum with organs, True nervous and circulatory system, Some are Hermaphroditic, Reproduce Sexually

The three Classes of Annelids would include

Oligochaeta (e.g. Earthworms), Hirudinea (e.g. Leeches), and Polychaeta (e.g. Sandworms, Clamworms

Annelida; Oligochaeta

This worm would be classified into the phylum ________________________ and the Class ____________________.

Oligochaeta means

A Few Setae or Bristles. Members of this class have bristles on the ventral side and Anterior end of their body's that help them move.

Annelida; Hirudinea

This organisms would be classified into the Phylum ___________________ and the Class __________________.

Annelida; Polychaeta

This organism would be classified into the Phylum ________________________ and the Class ________________________.

Polychaeta means

Many Setae (bristles), a characteristic used to further classify worms belonging to the Annelids.