1. Phylum Cnidaria & Ctenophora
“Jelly Fish” “Comb Jelly's”
Kingdom: Animalia Kingdom: Animalia Phylum:Cnidairia Phylum:Ctenophora
Classes: Anthozoa Classes: Tentaculata
Hydrozoa Nuda
Scyphozoa
BY: Alex Lingg
and a little of Trevor Brown

2. Phylum Cindaria Jelly fish Over 10,000 living species
Three Distinct Groups:
Anthozoa (Corals and sea anemones)
Hydrozoa(Hydroids)
Scyphozoa (true jelly fish)
Coral
Hydroid
True Jelly

3. Phylum Ctenophora True Jelly's Only about 100-150 species known
Only two different species:
- both considered comb jelly's

4. Major Characteristics: Cindaria
distinguished by having cells that have harpoon like or stinging tentacles that are used to eat and to lure prey
basement membranes
muscles
nervous systems
some have sensory organs

5. Major Characteristics: Ctenophora
distinguished from that they have colloblasts, cells that capture prey by squirting glue on them
1 millimeter to 1.5 meters in size
Most species have “comb rows” which are bands of cilia overlapping around the body

6. Feeding: Cindaria Can feed by: absorbing dissolved organic chemicals
filtering food particles out of the water
obtaining nutrients from algae within their cells
Some depend almost completely on absorbing dissolved nutrients

7. Feeding: Ctenophora All are predators Eat 10 times their body weight
Eat zooplankton
mollusk fish larvae

8. Reproduction: Cnidaria
Can reproduce sexually and asexually
The adults have gonads, which release ova and sperm into the water in the breeding season
Asexually they produce buds or split right down the middle

9. Reproduction: Ctenophora
Almost all of the species are hermaphrodites, which means they function as both male and female

10. Structure / Anatomy: Cnidaria Ctenophora two cell layers
First is the ectoderm which includes the epidermis, the nervous tissue
Second is endoderm which includes the gut and associated glands
Ctenophora
two cell layers
the outer layer of the epidermis consists of:
-sensory cells
-secretion
- protection
The inner layer of the epidermis contains a nerve net and muscles

11. Skeletal / Muscular: Cnidaria
They have a mesoglea is the translucent, jelly-like substance found between the two epithelial cell layers in the bodies of coelenterates
Mostly water
The mesoglea has muscle bundles and nerve fibers
Water is used for boyancy

12. Search Results
Structure / Anatomy:

13. Structure / Anatomy:

15. Locomotion: Cinardia
swim by a form of jet propulsion muscles squeeze water out of the cavity tissue layers are very thin, its hard to swim against currents just enough to control movement within currents

16. Locomotive: Ctenophora
Use combs to swim
They can go in the reverse direction!
When trying to escape predators, they can accelerate to six times its normal speed

17. Nervous system and senses
Cnidaria
have no brains or even central nervous systems
Instead they have nerve nets consisting of sensory neurons that generate signals in response to various types of stimulus
Can sense tilt
Most species have simple eyes
Although the eyes probably do not form images, they can distinguish the direction as well as navigate around solid-colored objects

18. Nervous system and scenses
Ctenophora
has no brain or central nervous system
but instead have a nerve net
The largest single sensory feature is the aboral organ
Its main component is a statocyst which is a balance sensor
Has cilia which are balancers that sense its orientation.

19. Regeneration Ctenophora can’t Cnidaria All can regenerate
This means they can recover from an injury
reproduce asexually
They gather small pieces or even collections of separated cells
recover even after apparently being destroyed by predators
Ctenophora can’t

20. Feeding Cnardia When prey is swallowed, it is liquefied by enzymes
Ctenophora
Once the food is in the digestive cavity, gland cells release enzymes that reduce the prey to slurry

21. Respiration Ctenophora
The resulting slurry is wafted through the canal system by the beating of the cilia
The ciliary rosettes in the canals may help to transport nutrients to muscles in the stomach
Cnardia
The slurry circulates through the digestive cavity, through the connecting tunnels
the circulation of nutrients is driven by water currents or by muscular movements
Nutrients reach the outer cell layer by diffusion

22. Excretion
Ctenophora
The anal pores may eject unwanted small particles, but most unwanted matter is regurgitated via the mouth
Cnardia
Indigestible remains of prey are expelled through the mouth. The main waste product of cells' internal processes is removed by the external and internal water currents

23. Class: Cubozoa Box jellyfish distinguished by being cube-shape
known for the extremely potent venom
the most venomous creatures in the world
tings from these are extremely painful and sometimes fatal to humans

24. Class: Hydrozoa are a taxonomic class of very small, predatory animals
most living in saltwater
are related to jellyfish and corals

25. Class: Scyphozoans
Scyphozoans have no durable hard parts, including no head, no skeleton and no specialized organs for respiration or excretion
consist of as much as 99% water and therefore are rarely found in fossil form

26. Class: Tentaculata A class of comb jellies
common feature is a pair of long, feathery, contractile tentacles
the tentacles are sticky-tipped cells that trap small prey

27. Class: Nuda A class of comb jellies
They are distinguished from other comb jellies by the complete absence of tentacles, in both juvenile and adult stages