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 (C)</p> Signup and view all the answers

Which characterizes the reproductive strategy of most gymnosperms?

<p>Monecious (B)</p> Signup and view all the answers

Monoecious gymnosperms produce which types of cones?

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

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

<p>Seeds (C)</p> Signup and view all the answers

What is the function of endosperm in angiosperms?

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

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

<p>Gynoecium (D)</p> Signup and view all the answers

What is the characteristic feature of perfect flowers?

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

Which type of angiosperms have imperfect flowers on different individuals?

<p>Dioecious angiosperms (C)</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 (D)</p> Signup and view all the answers

Why might a flower be considered incomplete?

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

Where is the vascular cambium located?

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

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

<p>The vascular cambium (B)</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 (C)</p> Signup and view all the answers

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

<p>Xylem (C)</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 (D)</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 (A)</p> Signup and view all the answers

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

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

What do nodes represent in plants?

<p>Branching points or leaf attachment points (D)</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 (B)</p> Signup and view all the answers

What are spines on a plant primarily used for?

<p>Defense (B)</p> Signup and view all the answers

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

<p>Mitochondrion (B)</p> Signup and view all the answers

Which eukaryotic lineage lost or reduced both mitochondria and plastids?

<p>Amoebozoa (C)</p> Signup and view all the answers

What is the primary mode of transmission of Trichomonas vaginalis?

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

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

<p>Giardia intestinalis (C)</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 (A)</p> Signup and view all the answers

Which protist is commercially important for various uses?

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

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

<p>Paramecium (B)</p> Signup and view all the answers

Which protist causes trypanosomiasis and Chaga’s Disease?

<p>Trypanosoma (C)</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 (A)</p> Signup and view all the answers

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

<p>Unikonta: Gymnamoebas (B)</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. (B)</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 (C)</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. (D)</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. (A)</p> Signup and view all the answers

Which feature distinguishes Trichomonas vaginalis among protists?

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

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

<p>Trypanosoma (A)</p> Signup and view all the answers

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

<p>Phycoerythrin (C)</p> Signup and view all the answers

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

<p>Chlamydomonas (C)</p> Signup and view all the answers

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

<p>Volvox (C)</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 (C)</p> Signup and view all the answers

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