Evolutionary Characteristics in Seed Plants Quiz
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Questions and Answers

What is a significant derived character that underlies most of embryophyte evolution?

  • Cones for reproduction
  • Dependent embryos (correct)
  • Megasporangia protection
  • Microscopic gametophytes
  • Which structure protects the megasporangia and produces eggs in gymnosperms?

  • Pollen grains
  • Male gametophytes
  • Ovuliferous cone scales
  • Ovules (correct)
  • Which division is the largest taxon among gymnosperms?

  • Ginkgophyta
  • Coniferophyta (correct)
  • Gnetophyta
  • Cycadophyta
  • What is the main purpose of pollen grains in gymnosperms?

    <p>Dispersal and pollination</p> Signup and view all the answers

    Which characterizes the reproductive strategy of most gymnosperms?

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

    Monoecious gymnosperms produce which types of cones?

    <p>Both ovulate and staminate</p> Signup and view all the answers

    What do embryo, food, and integument combine to form in gymnosperms?

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

    What is the function of endosperm in angiosperms?

    <p>Nourishing embryos within a seed</p> Signup and view all the answers

    Which floral whorl is part of a complete flower's structure?

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

    What is the characteristic feature of perfect flowers?

    <p>Presence of both gynoecium and androecium</p> Signup and view all the answers

    Which type of angiosperms have imperfect flowers on different individuals?

    <p>Dioecious angiosperms</p> Signup and view all the answers

    What is the key difference between monoecious and dioecious angiosperms?

    <p>Arrangement of reproductive structures on the same or different individuals</p> Signup and view all the answers

    Why might a flower be considered incomplete?

    <p>Lacking gynoecium and androecium</p> Signup and view all the answers

    Where is the vascular cambium located?

    <p>Between the xylem and phloem in roots</p> Signup and view all the answers

    What drives the formation of secondary xylem and phloem in plants?

    <p>The vascular cambium</p> Signup and view all the answers

    What is the primary function of growth rings in woody plants?

    <p>To serve as a climate proxy</p> Signup and view all the answers

    In which plant tissue are vascular rays found, connecting older and younger xylem?

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

    What is the main function of the bark layer in woody plants?

    <p>To protect against environmental threats</p> Signup and view all the answers

    What is the main function of the shoot system in a plant?

    <p>Carrying out photosynthesis and sexual reproduction</p> Signup and view all the answers

    Which of the following is NOT an adaptation exhibited by stems?

    <p>Tendrils for plant support</p> Signup and view all the answers

    What do nodes represent in plants?

    <p>Branching points or leaf attachment points</p> Signup and view all the answers

    Which tissue layer in plants is specifically adapted for gas exchange, water retention, and defense?

    <p>Dermal tissue</p> Signup and view all the answers

    What are spines on a plant primarily used for?

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

    Which organelle in protists possesses a crystalline rod in one of its flagella?

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

    Which eukaryotic lineage lost or reduced both mitochondria and plastids?

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

    What is the primary mode of transmission of Trichomonas vaginalis?

    <p>Sexual contact</p> Signup and view all the answers

    Which protist is known to infect mammalian hosts via the oral route of entry?

    <p>Giardia intestinalis</p> Signup and view all the answers

    Which supergroup includes diverse protists and anticipates major revisions to the formal taxonomy of life?

    <p>SAR Clade</p> Signup and view all the answers

    Which protist is commercially important for various uses?

    <p>Red Algae</p> Signup and view all the answers

    Which protist uses cilia to move/feed and has two kinds of nucleus?

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

    Which protist causes trypanosomiasis and Chaga’s Disease?

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

    Which protist is unicellular algae encased in glass frustule and contributes significantly to aquatic food webs as primary producers?

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

    Which protist uses pseudopodia for swimming, feeding, and test formation?

    <p>Unikonta: Gymnamoebas</p> Signup and view all the answers

    What is the significance of plastids in eukaryotic cells?

    <p>They are membrane-bound organelles involved in photosynthesis.</p> Signup and view all the answers

    Which evolutionary event led to the formation of mitochondria in eukaryotic cells?

    <p>Primary endosymbiosis of an alpha proteobacterium</p> Signup and view all the answers

    What is a defining characteristic of Kingdom Protista that led to taxonomic controversy?

    <p>The kingdom is polyphyletic and not universally recognized.</p> Signup and view all the answers

    Which statement accurately describes the life cycle of Giardia intestinalis?

    <p>Giardia undergoes excystation to trophozoites in the large intestine.</p> Signup and view all the answers

    Which feature distinguishes Trichomonas vaginalis among protists?

    <p>It colonizes human reproductive and urinary systems.</p> Signup and view all the answers

    Which protist causes sleeping sickness in Africa and Chaga’s Disease in the Americas?

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

    What pigment do Rhodophytes possess that makes them commercially important for various uses?

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

    Which algae are unicellular and adapted to live in snow fields/glaciers?

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

    Which protist is characterized by forming spherical colonies and showing some cellular integration?

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

    Which group of protists are multicellular photoautotrophs using chlorophyll a, c, and fucoxanthin for photosynthesis?

    <p>Brown Algae</p> Signup and view all the answers

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