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examples of phylum porifera

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Question:1. List the 3 types of body symmetry in order of increased complexity. 2. Organisms that cannot produce their own food are called? 3. Name 1 advantage of dividing organisms into smaller units. 4. The development of neural tissue to form a brain (or central nervous system) is known as? 5. What type of mobility do sponges have? 6. What type of symmetry do the most agile and quick animals have? 7. Name the 3 classes of sponges 8. What does Porifera mean? 9. Name the 3 classes of cnidarians 10. What structures provide skeletal support in the sponge? 11. What 2 compounds can spicules be made of? 12. What structure aids in respiration, circulation, digestion and excretion in the sponge? (Hint: it is part of a special cell) 13. How does water exit the sponge? 15. What cell is involved in the production of gametes, spicules and the transport of nutriencein the sponge? 16. What cells comprise the endoderm of a sponge? 17. Sponges reproduce asexually by producing__________or ____________. 18. A coiled, stinging structure that is found within a cnidoblasts cell is a ________.

Answers:1. There are 3 types of symmetry in the animal phyla in order of increased complexity: (Asymmetrical, Radial, and Bilateral) An example of an animal with asymmetry is the sponge under the Poriferan phylum because they come in different shapes and sizes. Radial symmetry found only in Cniderians like hydra or jellyfish. Bilateral symmetry - tunicates, humans, starfish, worms, clams, and grasshopper. 2. Heterotrophic organisms 3. Not to sure on that means... 4. Neural fold 5. Sponges are sessile, which means they stay attached to one place. They filter in water and nutrients through the water, as well as oxygen, so it doesn't have to move. It reproduces by budding, which means it grows a little sponge out of the side of it. 6. Bilateral 7. Calcarea (calcerous sponges - having spicules), Demospongiae (horn sponges, like the bath sponge), Scleropongiae (coralline or tropical reef sponges), and Hexactinellida (glass sponges). 8. Means an animal with openings in this case "pores" 9. Anthozoa (true coral, sea anemones, sea pens), Cubozoa (box jellyfish), Hydrozoa (freshwater hydra, fire coral), Scyphozoa (true jellyfish) 10. Spicules are the only primitive form of support in sponges. 11. I'm not too sure on what you mean by compounds... 12. Respiration: Incurrent pore (where water enters), Osculum also known as the outcurrent pore (where water leaves the sponge), this all occurs in the spongocoel (body cavity that involves water circulation and where nutrients get absorbed) Answer is Spongocoel. 13. Osculum 15. Haploid cell. 16. Choanocytes (These cells just "feed" the sponge) 17. Sponges can reproduce in two ways: sexually and asexually. in sexual reproduction, they release sperm into the water in hopes that it will land inside another sponge and fertilize an egg cell. all sponges are hermaphrodites, meaning that they can produce both egg and sperm, but they can't fertilize themselves. In asexual reproduction, a small sponge will grow off the side of the parent sponge in a process called budding. some species will bud internally by packing the new sponge cells into vessicles called "gemmules," which are released into the water when the parent sponge dies. all sponges that are produced asexually are exact clones of the parent sponge. 18. Thread tube

Question:I need information on the phylums... Porifera Cnidaria Platyhelminthes nematoda mollusca annelida arthropoda echinodermata chorodata the meaning of the name, atleast two classes from that phylum, 3 common examples of species from that phylum, major living environments, economic importance of that phylum, unique characteristics ie: reproductive method, body parts, type pf symmetry. please dont give me a web site!!!!!!!!! best answer will be rewarded so try hard!

Answers:1. The correct word is "phyla," not "phylums." 2. You need to do your own homework. I would be happy to help with specific questions, but not an entire homework assignment.

Question:i'm writing a lab report for my biology class and we have to write about how the hydra has advances over the phylum porifera and fungi. but i need some help finding some! please help me! 10 points and 5 stars to best answer. if you have no clue, why are you answering? and i have googled it! why would i be asking it on yahoo answers if i hadn't googled it? i'm not stupid/

Answers:They are predatory, express radial symmetry, and while normally sessile (sedintary) can move at will. In most bio books, the sections of the chapter that contains this info lists Porifera, then Hydra (in evolutionary order) stating advantages of the latter over the former as it moves along, so you might want to check that as well.

Question:I have a project for school that my group has the Animalia Kingdom for and since our class is pretty big, we have the vertebrate half of the Animalia Kingdom and another group has the invertebrate half. My marine biology teacher is insisting that there are at least 5 phyla that make up the vertebrate part of the kingdom, but I can only find the chordata phylum. Does anyone know of another phylum that makes up vertebrates?

Answers:There's the one Phylum - Chordata - notochord present at some time disappearing early in many forms, either temporary or permanent paired gill slits; dorsal nerve cord. The Vertebrates are one of four subphylums under Chordata. There are seven Classes that make up the vertebrate part of the subphylum Cyclostomata ( example: lamprey eel - no true jaws, scales or fins) Chondrichthyes (Examples-sharks, rays) Osteichthyes ( bony fishes ) Amphibia Reptilia Aves Mammalia