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202420 - BIO202 - 21355

202420 - BIO202 - 21355

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(LO#3 and 4; +1) Which characteristic(s) is (are) shared by both cnidarians and flatworms?

dorsoventrally flattened bodies

a digestive system with a single opening

radial symmetry

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(LO#3 and 4; +1) The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the

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(LO#1;+1) In septate fungi, what structures allow cytoplasmic streaming to distribute needed nutrients, synthesized compounds, and organelles throughout the hyphae?

tight junctions that form in cross-walls between cells

complex microtubular cytoskeletons

multiple chitinous layers in cross-walls

pores in cross-walls

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(LO#3; +1) Sponges are most accurately described as

aquatic filter feeders.

marine filter feeders.

marine predators.

freshwater scavengers.

aquatic predators.

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(LO#3; +1) Arrange the following taxonomic terms from most inclusive (most general) to least inclusive (most specific).

1. Apes

2. Hominins

3. Homo

4 Anthropoids

5. Primates

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(LO#1;+1) Which of the following statements is false concerning pathogenic bacteria?

Pathogenic bacteria cause disease by releasing endotoxins or exotoxins

Exotoxins are released only when bacteria die and their cell walls break down

Endotoxins are released only when bacteria die and their cell walls break down

None of the above

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(LO#1;+1) In most fungi, karyogamy does not immediately follow plasmogamy, which consequently

results in multiple diploid nuclei per cell

is strong support for the claim that fungi are not truly eukaryocytic

allows fungi to reproduce asexually most of the time

results in heterokaryocytic or dikaryocytic cells

means that sexual reproduction can occur in specialized structures

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(LO#3 and 4; +1) Which of the following correctly lists organisms from least complex in overall development to most complex?

sponges, clams, lobsters, tunicates, hydras

hydras, sponges, lobsters, clams, tunicates

sponges, hydras, clams, lobsters, tunicates

clams, sponges, hydras, tunicates, lobsters

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(LO#3 and 4; +1) How many of the following are characteristics of at least some members of the phylum Cnidaria?

1. a gastrovascular cavity

2. a polyp stage

3. a medusa stage

4. cnidocytes

5. a pseudocoelom

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(LO#1;+1) In what type of environment would you find extreme halophiles living?

very salty water

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