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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'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:Warm or cold blooded? Respiratory system type of organs does it change during lifetime? What habitat can you find this group in? Do they migrate? Are they territorial? How do they obtain food? Give an example of a food chain including these animals. What type of reproduction is representative of this group? (Asexual, sexual, external, internal) eggs or live young? How many young at a time usually? How often do they reproduce in a year?

Answers:> Few questions about the Phylum Mollusca? One of my favorite things. They don't fly! > Warm or cold blooded? Cold > Respiratory system type of organs does it change during lifetime? Hmmm. The general answer is no. But for some marine snails which have a larval stage, yes. > What habitat can you find this group in? Most, LOL. You'll find them in pretty much all marine and permanent aquatic environments. You'll find them in terrestrial environments where there's moisture, or moist places. > Do they migrate? I can't think of any that migrate. > Are they territorial? Most aren't. Some of the octopus species are. Some of the cuttlefish are territorial around breeding time. > How do they obtain food? Most bivalves are filter feeders. Most gastropods crawl around, and rasp food from surfaces with the radula -- you'll find detrivores, herbivores, and even carnivores doing this in this group. Cephalopods actively hunt and swim after prey. > Give an example of a food chain including these animals. Marine phytoplankton -> zooplankton -> clam Marine phytoplankton -> zooplankton -> small fish -> squid -> large fish Lettuce -> snail -> human being === > What type of reproduction is representative of this group? Sexual reproduction. Bivalves: external fertilization, eggs. Gastropods: internal fertilization. Some gastropods lay eggs, and others give live birth. Cephalopods: internal fertilization, lay eggs. > How many young at a time usually? Bivalves: thousands. Gastropods: the ones that lay eggs will lay somewhere between a dozen and a couple hundred at a time. The ones that give live birth have one at a time. Cephalopods: hundreds. > How often do they reproduce in a year? Bivalves: Hm, I don't know. Total guess: they reproduce about 26 times a year, timed by the tides. Gastropods: The ones that lay eggs will do so whenever they have some to lay. If the weather is good, every couple of weeks, I'd guess. The ones that give live birth will do so continuously in good conditions -- the adult Malaysian trumpet snails in my aquarium would give birth each and every day. Cephalopods: Once a year, I think.

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.

From Youtube

The life of Fish :Fish Kingdom: Animalia Phylum: Chordata All fish are aquatic and are found in fresh and salt water throughout the world. There are three main classes: the jawless fish (Agnatha), bony fishes (Osteicthyes) and cartilaginous fishes (Chondrichthyes). The jawless fishes, such as lampreys and hagfish, are the only fish that have sucking mouthparts, which makes them dependent on a parasitic way of life. They are primitive fish and fins are either absent or poorly developed. Bony fish possess true ossified, internal skeletons to support the body tissues and a rigid skull of fused dermal bones. Most also have external scales covering the body and a bony flap, the operculum, covering a single gill exit. The spiracle is reduced or lost in bony fishes and the majority have swim bladders evolved from the primitive fish lung. Their eyes are large and of primary sensory importance. The fins are flexible and often able to be folded against the body. This is the biggest class of fish and includes about 20000 species. There are around 900 species of cartilaginous fish. Sharks and rays are two examples that belong to one subclass (Elasmobranchii). These differ from bony fishes in having flexible, cartilaginous skeletons, sometimes strengthened by salt deposits. Elasmobranchs are covered with tooth-like scales called denticles, which helps strengthen the body's structure. They have multiple, uncovered gill exits and they have a good sense of smell. They have long snouts and their jaws are ...