Biology Test 3 Flashcards

Specialized stinging cells found in Cnidarians, used for defense and catching prey.

Polyps adhere to a surface at the base and have a gastrovascular top; Medusas have a bell-shaped body, are free-moving, and have their gastrovascular cavity on the bottom.

A sponge catches its food by moving water through the pores and out the Osculum. It's digested by being engulfed in mucus in the pores.

<p>They have a gastrovascular cavity, Cnidocytes, forms include Polyps and Medusa, and can be sessile or mobile.</p> Signup and view all the answers

<p>Anthozoa: only polyps, hard exoskeleton; Hydrozoa: reproduce by budding; Scyphozoa: has round medusa and radial symmetry; Cubozoa: box-shaped, hollow tentacles.</p> Signup and view all the answers

<p>Gas exchange happens on the surface, protonephridia regulates osmotic balance, they are very flat; classes include Monogenea (parasitic on gills, no coelom), Turbellaria (no respiratory or circulatory system), Trematoda (parasitic, small, take hosts on land), Cestoda (segmented).</p> Signup and view all the answers

<p>Soft-bodied, most have shells; classes include Polyplacophora (chitons, 8 dorsal plates), Gastropoda (spiraled shell, use foot or cilia for motion), Bivalves (2 halves drawn together by adductor muscles), Cephalopods (have a beak, use tentacles).</p> Signup and view all the answers

<p>Coelomates with bodies composed of fused rings; classes include Polychaete (mobile marine, feet on each segment), Oligochaeta (less mobile, burrow or live in tubes), Hirudinea (leeches, predatory, suck blood).</p> Signup and view all the answers

<p>Have an alimentary canal but have no circulatory system.</p> Signup and view all the answers

<p>Segmented body, flight, legs on either side of segments.</p> Signup and view all the answers

<p>Chelicerates: have claw-like appendages called chelicerae and book lungs (includes arachnids); Myriapods: terrestrial with jaw-like mandibles; Pancrustaceans: includes insects and crustaceans.</p> Signup and view all the answers

<p>Both constitute the clade Deuterostomia; Echinoderms have radial symmetry, a slow-moving water vascular system, and tube feet; Chordates have bilateral symmetry with a segmented body.</p> Signup and view all the answers

<p>They have a gastrovascular cavity, Cnidocytes, forms include Polyp and Medusa, and can be sessile or mobile.</p> Signup and view all the answers

<p>Animals that have a fluid-filled body cavity called a coelom, with a complete lining called a peritoneum.</p> Signup and view all the answers

<p>Parapodia.</p> Signup and view all the answers

<p>The bristles are called Chaetae, and they are made of Chitin.</p> Signup and view all the answers

<p>They secrete HIRUDIN, which prevents blood from coagulation.</p> Signup and view all the answers

<p>Ecdysoans.</p> Signup and view all the answers

<p>The cuticle is made of a protein called Chitin, and it is shed through Ecdysis.</p> Signup and view all the answers

<p>Chelicerates, Myriapods, Pancrustaceans.</p> Signup and view all the answers

<p>A fluid equivalent to blood in Invertebrates.</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>They have book lungs.</p> Signup and view all the answers

<p>A liquid protein produced from specialized abdominal glands.</p> Signup and view all the answers

<p>Pincers on the front of Myriapods.</p> Signup and view all the answers

<p>They are called larvae, such as maggots, grubs, and caterpillars; they look very different from the adults.</p> Signup and view all the answers

<p>The young are called Nymphs and they resemble the adults but are smaller.</p> Signup and view all the answers

<p>They have a water vascular system; their tube feet are used for motion and feeding.</p> Signup and view all the answers

<ol> <li>Mature ones live in blood vessels of human intestines; 2) They reproduce sexually and the eggs exit through human poop; 3) Eggs develop into ciliated larvae in water and infect snails; 4) Asexual reproduction in snails leads to new motile larvae; 5) Larvae penetrate skin and blood vessels of humans in irrigated fields contaminated with infected human poop.</li> </ol> Signup and view all the answers

<p>Polyps and Medusa.</p> Signup and view all the answers

<p>They are the 'true tissue' animals.</p> Signup and view all the answers

<p>Spongocoels are pore-like openings that allow water and food to enter the inner cavity of the sponge; Osculum is the opening at the top of the sponge where water exits.</p> Signup and view all the answers

<p>They capture food particles that are suspended in water as it passes through their body.</p> Signup and view all the answers

<p>Echinodermata (Sea Urchins) and Chordata (Tunicates).</p> Signup and view all the answers

<p>Nematoda (Round worms) and Arthropoda (Scorpions, arachnids).</p> Signup and view all the answers

<p>Rotifera (Rotifers), Mollusca (mollusks, octopi), Annelida (Annelids).</p> Signup and view all the answers

<p>Lack of a backbone.</p> Signup and view all the answers

<p>75% are gastropods.</p> Signup and view all the answers

<p>Phylum Mollusca; causes include loss of habitat, pollution, and non-native species.</p> Signup and view all the answers

<p>Bilateral symmetry; they have triploblastic development.</p> Signup and view all the answers

<p>Medusozoa: alternate between polyp and medusa forms (includes Hydrozoa, Scyphozoa, and Cubozoa); Anthozoans: only occur as Polyps (include Corals and Anemones).</p> Signup and view all the answers

<p>They are specialized stinging cells used for protection and catching prey. Cnidarians have them.</p> Signup and view all the answers

<p>They are 'true tissue' animals.</p> Signup and view all the answers

<p>They are suspension feeders.</p> Signup and view all the answers

<p>They have a hollow nerve cord on their dorsal side, notochord, muscular post-anal tail, anus, pharyngeal slits or clefts, and muscle segments.</p> Signup and view all the answers

<p>Lancelets and Tunicates.</p> Signup and view all the answers

<p>Catching food and evading predators.</p> Signup and view all the answers

<p>Cambrian Period.</p> Signup and view all the answers

<p>It is the most primitive fossil found from the Cambrian period; it was about 3 cm long and had a well-formed brain, eyes, and muscular segments but no skull or ear organs.</p> Signup and view all the answers

<p>They had defensive plates of bone on their skin.</p> Signup and view all the answers

<p>Mouth parts.</p> Signup and view all the answers

<p>Vertebrates that have jaws.</p> Signup and view all the answers

<p>They are part of the Placoderms and they appeared around 440 million years ago.</p> Signup and view all the answers

<p>Acanthodians.</p> Signup and view all the answers

<p>Chondrichthyans, ray-finned fish, lobe-finned fish.</p> Signup and view all the answers

<p>Elasmobranchii (sharks and rays).</p> Signup and view all the answers

<p>It is a Spiral Valve, which increases surface area.</p> Signup and view all the answers

<p>A cavity in some vertebrates that reproductive fluids and poop empty into.</p> Signup and view all the answers

<p>Osteichthyes.</p> Signup and view all the answers

<p>Form vs Function.</p> Signup and view all the answers

<p>Environment.</p> Signup and view all the answers