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Biology II (33)
General Question on all of Chapter 33
| Question | Answer |
|---|---|
| What characteristics do Phylum Porifera have? What animals are in Phylum Porifera? | Characteristics 1.) Lack symmetry 2.) No tissue or organs 3.) Colonial 4.) Adults are sessile 5.) Larvea are free swimming 7.) Internal skeleton made up of spicules containing calcium carbonate, silica, or protein |
| What are the cells that make up a sponge? | COanocytes and Amoebocytes |
| What animals are in phylum cnidarian? | Portugese man-o-war, jelly fish, sea anemones, hydras, and coral |
| What characteristics do phylum cnidarian have? | 1. have simple muscle nerves 2. 1st group of animals have movement 3. Radical symmetry 4. distinct tissues but no organs 5. diploblastic 6. immobolize prey with cnidocytes or tentacles 7. 2 body forms: medusa and polyp |
| What are cnidocytes? | Stinging cells that contain nematocytes |
| What are nematocytes? | powerful toxin that stuns or kills prey (protective coating will prevent them from stinging themselves) |
| How do Cnidaria feed? | 1. tentacles pull prey into gastrvosculr cavity 2. digestive enzymes are released 3. food that are too big are ocntinued to be broken down by enzymes in gastrovascular cavity 4. food particles small enough go through phagocytosis. forms vascular bundle |
| What animals are in the phylum platyhelminthes? | flat worms, planaria, tapeworm, liverflukes |
| What charcteristics do plats have? | 1. flat worms dorse ventrally 2. bilateral symmetry and cephalization 3. acoelemates 4. body has layer of muscle tissues 5. differentiated organs 6. branched gastrovascular cavity with digestive system |
| How does planaria feed? | 1. pharnyyx sucks up smaller pieces 2. enzymes are released inside of pharnxy and digests food. 3. food particles are transported to gastrovascular cavity 4. food particles that are too big are continued to be broek n down by enzymes in gast cav 5. s |
| Which plat animal can has a life cycle with two or more hosts? Why? | Liver flukes have a life cycle with two or more hosts during life cycle. Alters behavior or hosts 1 or 2 to increase chance of infected another host. mature flukes live in blood lines of humans and drill out of hosts skin |
| What are the general characteristics of rotifers? | small 2. pseudocoelemates 3. cilia at top helps rotatewater into mouth 4. some species reproduce by parthogenisis- asexual reproduction by females |
| What animals are in phylum nematodas? | Roundworms, hook worms, ascaris, heartworm, pin worm, vinegar eels |
| What are the general characteristics of nematodas? | unsegmented cylindral bodies bilateral symmetry pseudocoelemates longitutal muscles hydroskeleton nutrients are transported through pseudocolem covered with tough waxy cuticle reproduce sexually by internal fertilization complete digestive tract |
| What animals are in phylum mollusca? | snails, clams, octopuses, squibs, chiton, muscles, oysters, slug |
| What are the general characteristics of mollusca? | 1. Coelemates 2. bilateral symmetry 3. protosomes 4. muscular foot for locomotion 5. inhabit in marine and fresh water and land 6. soft bodies 7. secrete protective shell chitin 8. lost of shell during evolution |
| What are the four major parts of a mollusc | Foot, mantle, visceral mass, and radula |
| What is the function of a radula? | used for eating |
| what is the function of a mantle? | shell of calcium carbonate wit houter protection |
| What is the function of the foot? | locomotion, attatchment |
| What is the function of the visceral mass? | includes circulation organs. used for gass exchange |
| What are the three classes of Mullusca? | Gastropoda class, Bivalvia class, and cephalopoda class |
| What animals are in the gastropoda class? | snails and slugs, gleds gas exchange. |
| What animals are in the Bivalvia class? | clams, oysters, muscles, and scallops two shelled mollusca veins |
| What animals are in the cephalopoda class? | Octopus and squib. they move by force |
| What animals are in phylum annelida? | Earthworms and leeches, sandworms, and tube worms, fan worms, and christmas tree worms |
| What are the general characteristics of Annelidas? | Segmented worms 2. Hydroskeleton 3. Closed circulatory system 4. Coelemates 5. Body is divided into segments 6. Digestive system is specialized into crop, espophagus, gizzard, and intestine |
| What animals are in phylum antropoda? | crustaceans, spiders, insects, barnicle |
| What are the general characteristics of anthropodas? | JOinted feet Modifications of structure and function segmented bodies iwth jointed apendages exoskeleton made up of chitin Head, thorax, and adominum Coelemates Protosomes Developed nervous system |
| What is the exoskeleton made up of? | made up of chitin and waxy cuticle. muscles attatched to exoskeleton |
| What is molting? | exoskeleton is shed at interval, allowing growth by the production of a larger exoskeleton |
| What is ecolysis? | exoskeleton doesn't grow, but body grows in size. example are shells. |
| What animals are cheliceriforms? | meristomata and arachnida |
| What characteristics do cheliceriforms have? | simple eyes 6 pairs of apendages. Chelicerea are pincher or fangs. Pedelpols are for sensing. Four pairs of walking legs. lack antennas |
| What animals/classes are in Myriapods? | Diplopodas and chiplopodas. |
| What are the characteristics of myriapodas? | one pair of antennas mouth part has 3 pairs of modified apendages unbranched apendages compound eyes |
| What phylums are in Hexapodas? | Insects |
| What characteristics does hexapodas have? | three pairs of walking apendages 2. wings 3. goes through metamorphasis |
| What animals are in crustaceans? | crayfish, crabs, lobsters, and barnicles |
| What characteristics do crustaceans have? | two pairs of antennas three or more pairs of apendages branched apendages walking legs on thorax apendages on abdominum aquatics use gills for respiration |
| What is the difference between complete and incomplete metamorphasis? | Complete metamorphasis young looks different than adults. ex, catepillars, maggots, grubs (june beetles). incomplete metamorphasis- young resembles adult. ex. crickets, grasshopers, cicetas. |
| What animals are in phylum echinodermata? | starfish, sea urchins, sand dollars, sea cucumbers, brittle stars |
| What are the characteristics of echinodermatas? | spiny skin deutrosomes water vascular system tube feet (locomotion) all marine bilateral symmetry |
| How do starfish feed? | 1. pulls on shell of clam with tube feet to open 2. stomach is exerted into opening 3. stomach absorbs nutrients |