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7th LIFE SCIENCE
CHAP 12 INVERTEBRATE TEST
| Question | Answer |
|---|---|
| What characteristic separates invertebrates from vertebrates? | the presence of a backbone |
| Which phylum in the Animal Kingdom has the most species? | Phylum Arthropoda |
| What type of symmetry is found in the worms? | bilateral |
| Name 3 specialized cells in the sponges? | collar cells, flagellated cells, cells that produce the spicules, amebocytes, pore cells |
| What makes a flatworm flat? | lack of body cavities |
| What makes a roundworm round? | fluid within the pseudocoelom; the hydrostatic skeleton |
| What makes a segememted worm segemented? | segmented body wall |
| What helps octopi move swiftly through the water? | siphons |
| The bristles on the earthworm are called ______. | setae |
| What type of feeding do the clams use? | filtering water through their mantle cavity |
| What makes an animal, an animal??? | multicellular, eukaryotic, heterotrophic, nutrition by ingestion, sexually reproducing |
| What are the main characteristics of the Arthropoda? | jointed appendages, exoskeletons of chitin, open circulatory system, segmented bodies |
| Most insecticides enter insects through their respiratory openings called ______________. | spiracles |
| Insects have _____pairs of legs, while arachnids have _______pairs. | 3; 4 |
| Organisms that have both male and female reproductive parts are called _____________. | hermaphrodictic |
| What type of circulatory system do the Annelida have? | closed |
| All worms respire (breathe) through their ______? | skin (cuticle) |
| Examples of Porifera? | sponges |
| Examples of Cnidaria? | Hydra, sea anemone, jellyfish, man-o-war |
| Examples of Platyhelminthes? | flukes, tapeworm, Planaria |
| Examples of Nematoda? | Ascaris, pinworm, hookworm |
| Examples of Annelida? | earthworm, leech, marine worm |
| Examples of Mollusca? | clams, snails, squid, slugs |
| Examples of Arthropoda? | any insect, lobster, shrimp, centipede, millipede, spiders |
| Examples of Echinodermata? | starfish, sand dollar, sea cucumber, sea urchin |
| What are the stinging cells of Cnidaria? | cnidocyte |
| In the life cycle of indirect development, what is the dormant stage called? | pupa |
| The tubules of the insects respriatory system are called? | trachae |
| What are the phyla with radial symmetry? | Cnidaria, Echinodermata |
| What is the main characteristic of the Echinoderms? | the water vascular system |
| The water vascular system of the starfish uses individual ____________ form movement and feeding. | tube feet |
| A bundle of nerve tissue at the anterior end of an organism functions a "simple brain" or ________. | ganglion |
| In the earthworm's digestive tract, the food is stored in the ____________ and ground in the _____________. | crop; gizzard |
| Mollusks with 2 shells hinged together are called ? | bivalves |
| An insect's life cycle in which the body form changes completely? | complete metamorphosis |
| The blood pressure in an earthworm is controlled by the __________________? | dorsal blood vessel and aortic arches |
| The insects body plan consists of 3 segments called? | head, thorax, abdomen |
| What are the 4 stages of complete metamorphosis in the insects? | egg, larva, pupa, adult |
| What the 3 stages of incomplete metamorphosis in insects? | egg, nymph, adult |
| What are the main characteristics of the Porifera? | no specialized tissues, body wall penetrated by pores, filter feeders |
| How are the insects able to change out their exoskeletons if it will not grow with them? | the will shed (molt) the exoskeleton periodically |
| Why do the parasitic worms usually lack a structure for movement? | living within the hosts provides them with everything that they would need |
| Advantages of an exoskeleton. | jointed, provides attachemt for muscles, hard to protect, special shape for function |
| Disadvantages of an exoskeleton. | heavy and hard to move, will not grow and must be shed, left unprotected until new one forms |
| In the Cnidaria, food is captured by? | paralizing prey with stinging cells |
| Animals that are sessile usually aquire food by ___________. | filtering food from the water |
| Detritus feeders get their nutrition from? | organic material in the soil or sand that they eat |
| The gastropods are herbivores and remove food from rocks and plants using a scrapping tongue called a ___________. | radula |
| Insects are very successful because of the many mouthparts that they have developed, name some? | sucking, chewing, siphoning, mandibles for crushing |
| What injects the venom from the cnidocyte to the prey? | nematocyst |
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biobob
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