Biology - Animalia Flashcards
Porifera
Commonly called sponges
Hermaphrodite
Produce both male and female gametes
Outside layer of a sponge
Epithelium
Collar cells
Store food
Osculum
Opening at the top of a sponge
How do sponges feed
Filter feeding
What are the skeletons of sponges made of
Spongin, Spicules
Flukes
Parasitic flatworms (hermaphroditic)
Contractile cells
Controls what enters the sponge
Radial symmetry
The arrangement of body parts around a central axis. Similiar to a wheel.
Cephalization
The start of a brain, found in flatworms
Polyp
Vase shaped tentacles and mouth point upwards (sessile)
Medusa
Both mouth and tentacles face down (moving)
Nerve net
Coordinates the activity of the cnidocytes and the tentacles.
Cnidarian
Cells that contain cnidocytes
Incomplete digestive system
Both food and waste enter through the same hole.
Bilateral symmetry
Body plan where parts are arrranged in pairs
Platyhelminthes
Flatworm
Gemmule
Protective coating around the sponge when there are harsh conditions
Turbellaria
Planarians
Pharynx
Long muscular tube extended form the from the inside of the stomach used to feed
Flame cells
Remove waste from the cell
Cnidocytes
Stinging poisonous barbs with which cnidarians attack their prey.
Tapeworm
Parasitic flatworms live in digestive tracks
Planula
Free swimming ciliated larvae
Trematoda
Fluke
Cestoda
Tapeworm
Amebocytes
Control digestion in sponges
Cestoda
Tapeworm
Trematoda
Fluke
Nématode
Has a complete digestive system
Pseudocoelem
Fluid filled cavity that acts as the exoskeleton
Molting
When the skin of a nematode is shed
How do nematodes reproduce
The reproduce sexually
Rotifer
Very small 1mm
Parthenogenesis
Where only females are produced by sexual reproduction
