Science Bio Project

Phylum Porifera

Basic Characteristics
No definine symmetry
Bodies are multicellular, with few tissue and no organs.
The cells and tissues surround a water filled space but there is no body cavity.
Has no nervous system
Has a larval stage.
Are all filter feeders.
Sponges are among the oldest animals, being discovered about 500 million years ago!

Phylum Cnidaria
JellyFish

Basic Characteristics
Live in both fresh water, and salt water. Radial Symmetry; typically quadramous
Diploblastic (two germ layers during development) – ectoderm and endoderm
Adult body with an outer cellular layer (Epidermis or
Ectodermis) and an inner cellular layer (Gastrodermis) with a non-cellular layer (Mesoglea) in between
Tissue level of organization – some specialized tissues Present
Possess unique stinging or adhesive structures (Cnidae) found in specialized cells (cnidocytes); most common Cnidae called nematocysts
The phylum Cnidaria consists of about 10,000 species of simple animals found only in marine habitats.

Phylum Platyhelmenthes
Tapeworm

Basic Characteristics
Has Bilateral symmetry
The bodies of the animals in this kingdom have 3 layers of tissues with organs and organelles
They have a normal nervous system of fibers.
Mostly produce sexually as hermaphadites.
Most feed on animals and other smaller life forms, as a host. ( Can feed on humans.)
When a single individual is separated into two parts, the parts can regenerate into two separate tapeworms!

Phylum Rotifia
Rotifers

Basic Characteristics
Bilateral Symmetry
Body has two cell layers.
Has a nervous system with a brain, and paired nerves.
Has no circulatory or respitory organs.
All live in a aquatic environment.
Usually swim free, or attached.
These small creatures actually posses a gut and a anus to process food!

Phylum Nemotoda
Round Worms

Basic Characteristics
Bodies are usually bilateral symmetrical, and