Presentation is loading. Please wait.

Presentation is loading. Please wait.

Sponges Cnidarians Comb Jellies

Similar presentations

Presentation on theme: "Sponges Cnidarians Comb Jellies"— Presentation transcript:

1 Sponges Cnidarians Comb Jellies

2 Jelly Fish and sponges are animals?
Sponges were thought to be _______ because they_______ ___________________ Jellyfish were classified as the simplest animals,__________ _________________. What classifies an animal? 2

3 The ___________classifies an organism


5 Unique Features of Sponges Phylum Porifera
Based on the previous video why Do sponges need light?________ ___________ No Movement (________) No Tissue No organs 5

6 What do sponges have? Body is made of special cells that act like organs; _________________ ____________________ ________________ “Mouth” ________________: Collar cells: “heart” _____________: “Stomach” _______________: “skeleton”


8 Examples of Sponges 10,000 species
Glass sponges Bath Sponge Calcium Carbonate Sponge Sponges are classified Based on spicules “_________” __________________. Ex: Silica, spongin, calcium carbonate     8

9 Feeding and Digestion Suspension feeders (_________________)
___________________unicellular algae, bits of organic matter (detritus) Size matters _____________--pinacocytes and archaeocytes ______________--choanocytes ______________do most of the digestion and storage of food Wastes leave via _________ 9

10 Reproduction ______________________________________________
_______________ (Can grow back) Sexual reproduction Sperm enter though the ostia, choanocytes carry them to the egg. Larvae usually develop in the adult then exit through osculum,. 10

11 _______________of Sponges
Filter feeders: Filter out the water Sponges are eaten ______________________ sponge crabs place a sponges on their back to camouflage with their environment - ______________________for animals

12 Human Importance of Sponges
_________________: provides jobs and drives economy in towns that collect them

13 hydra, stinging jellyfish, coral, anemones
Phylum Cnidaria hydra, stinging jellyfish, coral, anemones

14 General Characteristics of Cnidarians: Jellyfish
________________ _______________________ _________________________ define this group nematocytes: stinging cells

15 Cnidarians Have __________________ _________ or _____ body plans

16 Cnidarian Structure _______________2 tissue layers (_____________)
_________________ _______________2 tissue layers (_____________) Epidermis Endoderm (gastric) Mesoglea (jelly) between the two tissue layers. _________________ __________________

17 Reproduction in Cnidarians
____________________________ _____________________: Turritopsis nutricula after the Medusa stage it goes back to the polyp and then Medusa then polyp “forever”

18 Feeding and Digestion Tentacles with_____________ ____________________
suspension feeders, plankton jellyfish are carnivorous-hunt vertebrates and invertebrates Tentacles then _____________ ________________________ Enzymes digest, cells absorb __________________________ Blue=anemone mouth red= fish flesh Jellyfish catching fish Anemone eating mussel

19 Cnidaria have: Cnidocytes, stinging cells that capture prey

20 Nervous System ________________ Respond to stimuli from all directions
Nerve net controls responses and movement

21 Phylum Cnidarians: Include Classes
Scyphozoa: Jellyfish Cubuzoa: Box Jellyfish Hydrozoa: Hydroids Anthozoa: Corals, Sea Anemones

22 Class Scyphozoa: Jelllyfish
______________________, over 280 species: 1. Crown Jellyfish 2. Sea Nettles 3. Blubber Jellyfish

23 Class Scyphozoa (jellyfish)
_________ = primary stage ______________________Domed Shape most are small _________ _____________________ largest reach 70+ meters And 450 pounds

24 Class: Cubuzoa Not True Jellyfish different then scyphozoans
Called______________ __________shaped not umbrella shaped like scyphozoans. This shape makes them ____________ _______________________ Much ____________in Nematocysts More developed nervous system Box Jelly True Jellyfish

25 Long Island Scyphozoa Lions mane can get up to 8 feet, normally 12 inches as seen In the picture to the right Moon Jellyfish inches There sting does not hurt people For Jellyfish Sting use vinegar To neutralize the Venom:

26 Jellyfish as Food?

27 Scyphozoa: Hydrozoa ________________________________
feeding polyps reproductive polyps __________________________. Instead, the colony is suspended from a gas sac. Usually found in tropical waters but can be pushed by currents as far North to Canadian waters man o war

28 Anthozoa (sea anemones, coral, gorgonians)
_________________, most are sessile, never in the medusa stage Most Anthozoans _______________and therefore require light to live. ___________ ________________ __________________

29 Anthozoa: Corals _________________
Soft Coral/non building reef corals _________________ ________________Reef Builders and non reef builders __________are called ________ corals or Hard Corals ____________are called ___________ corals or soft Corals Hard Coral/ reef building corals

30 Anthozoa: Hermatypic Corals
They obtain part of their energy from_____________ ____________________________________________. They secrete calcium carbonate to form a __________ ________.

31 Hermatypic Corals Create Reefs called the Rainforest of the sea
_______________________ ___________ ocean contains coral reefs Reefs worldwide provide economic services worth $375 billion per year.

32 ___________________________ ________________________
At the current rate of coral bleaching due to warmer sea temperatures, All coral reef ecosystems will be gone in years. Healthy Bleached

33 Phylum Ctenophora Comb Jellies

34 Comb Jellies Resemble jellyfish,
Comb plates (rows of cilia) run along exterior and propel the animal Most do not have cnidocytes Secrete sticky substance to bind prey or net-like tentacles

35 Bioluminescence to attract prey, mates, or perhaps to deter predators
Usually found in deep waters

Download ppt "Sponges Cnidarians Comb Jellies"

Similar presentations

Ads by Google