Shared Flashcard Set

Details

Zoology: Porifera and Cnidarians
Jellyfish and Sponges
53
Science
12th Grade
08/19/2014

Additional Science Flashcards

 


 

Cards

Term
Characteristics of Porifera
Definition
  • Sessile as Adults
  • Simplest Animal
  • Lack Cephalization
  • Asymmetrical
Term
Are Sponges Made of Tissues?
Definition
They are made of specialized cells.
Term
How many species of porifera are fresh water species?
Definition
100
Term
How many species of porifera are not fresh water species?
Definition
8,000
Term
What are Porifera?
Definition
Pore Bearing Creatures
Term
What are Incurrent Pores?
Definition
Pores that take in water
Term
What is an Osculum?
Definition
It releases water through the top of a porifera
Term
Filter Feeders
Definition
Animals that feed only on tiny particles in the water.
Term
Choanocytes (Collar Cells)
Definition
Have flagella that trap or digest food.
Term
Ameboid Cells
Definition
Cells take away waste and transfer nutrients from cell to cell.
Term
Skeleton Spicules
Definition
Hard spikes of calcium that support the body and protect the sponge.
Term
Spongin Skeleton
Definition
Flexible protein, acts as skeleton for softer porifera.
Term
How do Sponges Reproduce?
Definition

They are Hermaphroditic so they release eggs and sperm.

They also release gemmules.

They are also assexual.

Term
Gemmules
Definition
Balls of cells released into sea for reproduction (done mainly by fresh water sponges)
Term
Asexual Reproduction
Definition
Budding, breaking off a body to form an offspring.
Term
Form and Function of Porifera
Definition
  • Incurrent Pores
  • Osculum
  • Filter Feeders
  • Choanocytes
  • Ameboid Cells
  • Skeleton Spicules
  • Spongin Skeleton
Term
Types of Sponges
Definition
  • Venus Flower Basket
  • Basket Sponges
  • Sea Wool Sponges
  • Carnivorous Sponges
  • Tube Sponges
  • Elephant Ear Sponges
Term
Venus Flower Basket Sponges (Glass-Sponges)
Definition
Are used for fiber optics.
Term
Basket Sponges
Definition
Very large sponges with large osculums.
Term
Sea Wool Sponges
Definition
Very Absorbent Sponges
Term
Carnivorous Sponges
Definition
Can Digest Small Animals
Term
Tube Sponges
Definition
Have Many Osculums
Term
Elephant Ear Sponges
Definition
Large surface area of the sponge is used for cleaning and ceramics. They can also be used to apply make-up.
Term
List Examples of Cnidarians
Definition
  • Jelly Fish
  • Hydra
  • Coral
  • Sea Anemones
Term
List Characteristics of Cnidarians
Definition
  • Radial Symmetry
  • Tentacles
  • Stingers
  • Lack Cephalization
  • Nematocysts
Term
What are Nematocysts?
Definition
Stingers on tentacles.
Term
What are Nematocytes Made Of?
Definition
Cnidocytes
Term
How many Cnidarian Species are Native to the Sea and Ocean?
Definition
10,000
Term
How many Cnidarian Species are Native to Fresh Water?
Definition
50
Term
Epidermis
Definition
Outerlayer of Cells
Term
Gastroderm
Definition
Inner Cell Layer
Term
Mesoglea
Definition
Jelly Like Middle Layer
Term
How do Cnidarians Eat?
Definition
Sting their food and and digest their food in their gastrovacular cavity.
Term
Do Cnidarians have tissues?
Definition
No, they are made up of just specialized cells.
Term
What are Polyps?
Definition
Vased Shaped Cnidarians
Term
Give an Example of a Cnidarian?
Definition
Coral
Term
What is a Medusa?
Definition
Bell Shaped Cnidarians
Term
Give an Example of a Medusa?
Definition
Jellyfish
Term
Cnidarian Body Types
Definition
  • Polyp
  • Medusa
Term
How do Cnidarians Reproduce?
Definition
They are Hermaphroditic as well as Assexual.
Term
Classes of Cnidarians
Definition
  • Hydrazoa
  • Scyphozoa
  • Anthozoa
Term
Examples of Hydrazoa
Definition

Hydra (fresh water)

Man of War (Floats Above Water)

Term
Scyphozoa
Definition
  • Jellyfish
  • Some can be deadly like the australian box jelly which can cause death in a few minutes.
Term
Anthozoa
Definition
  • Sea Anemones and Corral
  • Most corrals live in colonies which form reefs from the corral skeletons which are made of calcium carbonate.
Term
Importance of Cnidarians
Definition
  • Symbiotic Relationships
  • Corral Reefs provide homes for animals and help shorelines from washing away.
  • Coral can also be used for jewlery.
Term
How do Cnidarians Respire?
Definition
Diffusion through their body walls.
Term
In the Aurelia life cycle how is a medusa produced?
Definition
The budding polyp releases it in its youth.
Term
What is the Gastroderm?
Definition
The inner lining of the gastrovacular cavity.
Term
What is the Mesoglea?
Definition
The layer that lies between the gastroderm and the epidermis.
Term
What is the Gastrovacular Cavity?
Definition
Digestive chamber with singal opening.
Term
Nerve Net
Definition
Loosely Organized Network of Nerve Cells
Term
Statocysts
Definition
Sensory cells that help determine direction of gravity.
Term
Ocelli
Definition
Eyespots that direct light
Supporting users have an ad free experience!