Question | Answer |
Characteristics of an animal | consumers, most have true tissues, interact with the environment and other animals, |
Invertebrate | animals without bone tissue |
Characteristics of Sponges | sessile filter feeders with specialized cells |
Spicules | needlelike spines which make the sponge stiff, and used for protection |
Asexual reproduction | reproduction without exchanging genetic material |
Sexual reproduction | reproduction which involves the exchange of genetic material |
Larva | Immature form of an organism that is different from its parent |
Bilateral symmetry | only one line of symmetry, left and right |
Radial symmetry | having more than one line of symmetry |
Characteristics of Cnidarians | radial symmetry, tentacles, a single opening where food enters and waste leaves. |
nematocyst | stinging cell on a tentacle |
Classes of cnidarians | sea anenome, coral, jellyfish |
Worms | tube-shaped bodies with bilateral symmetry |
Phyla of Worms | segmentedworms, flatworms and round worms |
Annelids | segmented worms with organized body systems |
Characteristics of Flatworms and Round worms | simple body systems that move with cilia, may be parasitic |
Characteristics of Mollusks | soft bodied, with a foot and a mantle |
Classes of Mollusks | bivalves, gastropods, cephalopods |
Characteristics of Echinoderms | live in the oceans, adults have radial symmetry, feed on the sea floor |
Examples of Echinoderms | sea stars, sea urchins, sea dollars |
Characteristics of Arthropods | segmented body parts and an exoskeleton |
Classes of Arthropods | arachnids, crustaceans, insects, millipedes and centipedes |
Characteristics of Insects | 3 body segments, 3 pairs of legs, live mostly on land |
Characteristics of Crustaceans | varied number of body segments and pairs of legs. 2 pairs of antennae, live mostly in water |
Characteristics of Arachnids | 4 pairs of legs, 2 body segments, most on land |
Molting | shedding of the exoskeleton as an arthropod grows |
Examples of Crustaceans | crabs, lobsters, barnacles and sow bugs |
Examples of Arachnids | spiders, ticks, mites, and scorpions |
Examples of Insects | bees, ants, butterflies, grasshoppers |
Metamorphosis | process during the life cycle where the appearance and body systems undergo a change |
Characteristics of Millipedes and centipedes | long segmented bodies with many legs |
Complete metamorphosis | Life cycle that includes a larval, pupal, and adult stage. |
Incomplete metamorphosis | Life cycle where young grows gradually, and forms an reproductive adult life form at the end. |
Gills | Organs with high surface area, used to exchange gases in water animals. |
Water Vascular System | Hydraulic system used by echinoderms for movement, digestion and circulation. |
Tube feet | fluid filled muscular tubes used by echinoderms for movement and grasping |
Three body parts of insects | head, thorax and abdomen |
Examples of bivalves | oysters, clams and mussels |
Examples of gastropods | snails and slugs |
Examples of cephalopods | squid, cuttlefish, octopus |
Medusa | life form of cnidarian. Gelatinous umbrella shape body with trailing tentacles |
Polyp | life form of cnidarian. cylindrical, sessile body with tentacles above for feeding |