Biology 180: Biodiversity and Evolution Exam 3
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Questions and Answers

What is the approximate date of the origin of plant vascular tissue?

  • 130 million years ago
  • 500 million years ago
  • 420 million years ago (correct)
  • 400 million years ago

    • What is the function of flagella in zoospores?

  • To increase the surface area of the spore
  • To facilitate the fusion of nuclei
  • To provide structural support to the spore
  • To enable the spore to move through water (correct)

    • What is the process by which the cytoplasm of two compatible mating types or hyphae fuse together in fungi?

  • Mitosis
  • Karyogamy
  • Plasmogamy (correct)
  • Meiosis

    • What is the primary mode of reproduction in yeast?

    <p>Asexual reproduction</p> Signup and view all the answers

    What happens to the surface area:volume ratio as shapes or bodies get bigger?

    <p>It decreases</p> Signup and view all the answers

    What is the primary industrial application of yeast?

    <p>Baking and brewing</p> Signup and view all the answers

    What is the primary function of stomata in land plants?

    <p>To regulate water loss</p> Signup and view all the answers

    What type of tissue is responsible for transporting water and nutrients in plants?

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

    What process involves a cycle of multicellular diploid and haploid phases in plants?

    <p>Alternation of generations</p> Signup and view all the answers

    What is the waxy layer that covers the leaf to prevent excessive water loss?

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

    What is the direction of transport in phloem tissue?

    <p>From leaves to other parts of the plant</p> Signup and view all the answers

    What is the phase of the plant life cycle that produces spores?

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

    What is the calculating method for surface area to volume ratio?

    <p>Dividing the surface area by the volume</p> Signup and view all the answers

    Which group of organisms are considered to be the closest living relatives of animals?

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

    What is the characteristic feature of opisthokonts?

    <p>A single posterior flagellum on the swimming cells</p> Signup and view all the answers

    What is the function of flagella in certain cells?

    <p>To aid in locomotion</p> Signup and view all the answers

    What was the significant event that occurred during the Cambrian period?

    <p>The origin of all major animal phyla</p> Signup and view all the answers

    What is the function of choanocyte cells in sponges?

    <p>To create water currents to filter food particles</p> Signup and view all the answers

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