Exam 24: Animal Evolutionthe Invertebrates

MATCHING Matching.Choose the most appropriate answer for each. a.two pairs of legs per segment b.tiny, flattened, crawling forms c.planarians, flukes, tapeworms d.nematodes e.snails, squids, clams f.wheel animals g.flagellated collar cells present h.jellyfish and corals i.crustaceans, ticks, and insects j. polychaetes, earthworms, leeches k.sea urchins, sea stars -placozoan

-Exoskeletons are most characteristic of

Use the figure above to answer the following questions. -An asexually reproducing individual is indicated by

Why might tardigrades make good organisms for space flight?

__________ is a concentration of nerves and sensory structures at the head end.

MATCHING Matching.Choose the most appropriate answer for each. a.two pairs of legs per segment b.tiny, flattened, crawling forms c.planarians, flukes, tapeworms d.nematodes e.snails, squids, clams f.wheel animals g.flagellated collar cells present h.jellyfish and corals i.crustaceans, ticks, and insects j. polychaetes, earthworms, leeches k.sea urchins, sea stars -rotifers

-Which of the following is NOT a major feature of arthropods?

MATCHING Matching.Choose the most appropriate answer for each. a.two pairs of legs per segment b.tiny, flattened, crawling forms c.planarians, flukes, tapeworms d.nematodes e.snails, squids, clams f.wheel animals g.flagellated collar cells present h.jellyfish and corals i.crustaceans, ticks, and insects j. polychaetes, earthworms, leeches k.sea urchins, sea stars -arthropods

-Which of the following groups contains organisms that produce free-living larvae?

Animals most likely evolved from a colony similar to __________, a type of protist.

Classification.Respond to the following statements in reference to the five animal phyla listed below. a.Annelida b.Arthropoda c.Mollusca d.Echinodermata e.Rotifera -Although most members are enclosed by hardened shells, this phylum name literally means "soft body."

MATCHING Matching.Choose the most appropriate answer for each. a.two pairs of legs per segment b.tiny, flattened, crawling forms c.planarians, flukes, tapeworms d.nematodes e.snails, squids, clams f.wheel animals g.flagellated collar cells present h.jellyfish and corals i.crustaceans, ticks, and insects j. polychaetes, earthworms, leeches k.sea urchins, sea stars -mollusks

What evidence is there that choanoflagellates were the ancestors to animals?

Use the figure above to answer the following questions.It shows a longitudinal section of a sponge body wall.The sponge interior is on the left. -A cell type that secretes skeletal support elements and digests and transports food is indicated by

Nephridia are

Genetic evidence suggests that insects have evolved from crustaceans.What is a reason that insects are so much smaller than crustaceans?

MATCHING Matching.Choose the most appropriate answer for each. a.two pairs of legs per segment b.tiny, flattened, crawling forms c.planarians, flukes, tapeworms d.nematodes e.snails, squids, clams f.wheel animals g.flagellated collar cells present h.jellyfish and corals i.crustaceans, ticks, and insects j. polychaetes, earthworms, leeches k.sea urchins, sea stars -sponges

Which is false regarding the GGC gene?

Classification.Respond to the following statements in reference to the five animal phyla listed below. a.Porifera b.Cnidaria c.Platyhelminthes d.Nematoda e.Annelida -Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system.

-Which of the following is NOT a chelicerate?