Plant Diversity Lecture Week 1
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Questions and Answers

What is the major difference between gymnosperms and angiosperms?

  • Gymnosperms have flowers while angiosperms do not.
  • Gymnosperms have vascular tissue while angiosperms do not.
  • Angiosperms produce seeds enclosed in fruits, unlike gymnosperms. (correct)
  • Angiosperms do not require water for reproduction, unlike gymnosperms.

    • What is the primary reason why bryophytes cannot transport water efficiently?

  • Absence of vascular tissue (correct)
  • Over-reliance on asexual reproduction
  • Lack of flowers for water uptake
  • Inability to produce seeds

    • Which type of plant has an improved vascular tissue compared to others?

  • Gymnosperms
  • Seedless vascular plants
  • Bryophytes
  • Angiosperms (correct)

    • Which of the following is not a characteristic of all plants?

    <p>'Naked' seeds on cones</p> Signup and view all the answers

    What type of plants require water for reproduction?

    <p>Angiosperms and gymnosperms</p> Signup and view all the answers

    What distinguishes angiosperms from gymnosperms regarding seed production?

    <p>Gymnosperms have naked seeds while angiosperms have seeds enclosed in fruits.</p> Signup and view all the answers

    Which plant type has the ability to perform both sexual and asexual reproduction?

    <p>All of the above</p> Signup and view all the answers

    Which of the following has/have been addressed through the development of genetically modified plants?

    <p>All of the above</p> Signup and view all the answers

    Cellulose is found in the cell walls of...

    <p>All of the above</p> Signup and view all the answers

    Quinine and ephedrine...

    <p>... are alkaloids with medicinal uses</p> Signup and view all the answers

    Mosses are...

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

    When and how did bryophytes evolve?

    <p>Evolved 450 million years ago from green algae</p> Signup and view all the answers

    Which were the first land plants?

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

    Which group can serve as effective bioindicators of air quality?

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

    Which group shows the greatest potential to acclimate to global warming?

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

    Which is the correct statement?

    <p>Bryophytes are transitional between the charophycean green algae (charophytes) and the vascular plants.</p> Signup and view all the answers

    Bryophytes contain --- chlorophyll along with carotenoids.

    <p>Two of the above</p> Signup and view all the answers

    Which of the following is NOT a similarity between bryophytes and green algae?

    <p>Cell walls do not contain cellulose.</p> Signup and view all the answers

    Bryophytes have many similarities to vascular plants. Which of the following is INCORRECT?

    <p>None of the above/ All are correct</p> Signup and view all the answers

    Bryophytes have many similarities to vascular plants. Which of the following is false?

    <p>A layer of spores protects multicellular sporangia</p> Signup and view all the answers

    Which of the following are NOT challenges for life on land for plants?

    <p>Too much access to nutrients and energy</p> Signup and view all the answers

    There are many challenges to life on land for plants. Which solution helps the plant with sexual reproduction?

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

    There are many challenges to life on land for plants. Which solution helps the plant with desiccation?

    <p>epidermis, stomata and cuticle</p> Signup and view all the answers

    There are many challenges to life on land for plants. Which solution helps the plant with transport?

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

    There are many challenges to life on land for plants. Which solution helps the plant with support?

    <p>lignin and wood</p> Signup and view all the answers

    There are many challenges to life on land for plants. Which solution helps the plant with dispersal?

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

    There are five important characteristics of plants; which of the following is correct?

    <p>Plants have a multicellular embryo protected within the female parent</p> Signup and view all the answers

    There are five important characteristics of plants; which of the following is incorrect?

    <p>Plant cell walls contain very little cellulose</p> Signup and view all the answers

    This question is about alternation of generations in bryophytes. Which of the following is correct?

    <p>Diploid sporophyte produces haploid spores by meiosis</p> Signup and view all the answers

    This question is about alternation of generations in bryophytes. Which of the following is correct?

    <p>Haploid gametophyte produces gametes by mitosis</p> Signup and view all the answers

    This question is about alternation of generations in bryophytes. Which of the following is INCORRECT?

    <p>Spores grow in sporophytes</p> Signup and view all the answers

    When talking about alternation of generations, which of the following is correct?

    <p>Both A and B</p> Signup and view all the answers

    Which of the following is false when talking about bryophytes gametophytes?

    <p>Antheridia- gametangia producing eggs</p> Signup and view all the answers

    Which of the following is false when talking about bryophytes sporophytes?

    <p>Plant spore cell walls contain sporopollenin to help with reproduction</p> Signup and view all the answers

    Sporophytes and gametophytes are...

    <p>Sporophytes are 2N or diploid. Gametophytes are 1N or haploid.</p> Signup and view all the answers

    In bryophytes, which structure(s) are on the tips of separate gametophyte thalli?

    <p>All of the above</p> Signup and view all the answers

    How does reproduction in mosses occur?

    <p>When the thallus is covered in free-standing water</p> Signup and view all the answers

    Which of the following is not grouped under the bryophytes?

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

    Which phylum is the earliest living plant most closely related to green algae?

    <p>Marchantiophyta (Liverworts)`</p> Signup and view all the answers

    How many species of Liverworts (Marchantiophyta) are there?

    <p>5200</p> Signup and view all the answers

    What is the dominant generation in liverworts such as Marchantia?

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

    Which structure in Marchantia bears the gametangia?

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

    What is the method of asexual reproduction in Marchantia?

    <p>Simple fragmentation</p> Signup and view all the answers

    Which generation in Marchantia is initiated with fertilization?

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

    What attaches the maturing sporophyte to the gametophyte in Marchantia?

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

    What is the purpose of the conducting tissue in mosses?

    <p>Transporting water and nutrients</p> Signup and view all the answers

    Which class of mosses contains the vast majority of moss species?

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

    What is the distinctive feature of sporophytes in Sphagnum moss?

    <p>Red to blackish-brown capsules</p> Signup and view all the answers

    Which of the following is NOT a common use of Sphagnum moss?

    <p>Anti-inflammatory medication</p> Signup and view all the answers

    What is the primary function of the pseudopodium in sphagnum moss?

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

    What is the unique feature of granite mosses that allows them to adapt to hostile environments?

    <p>Survival under extreme conditions</p> Signup and view all the answers

    What is a unique feature of Granite Mosses (Rock Mosses)?

    <p>They have four vertical slits on the sporangium</p> Signup and view all the answers

    What is the function of leptoids in True Mosses?

    <p>Food conduction</p> Signup and view all the answers

    How is fertilization achieved in True Mosses?

    <p>With sperm swimming down a tube in the archegonium</p> Signup and view all the answers

    Where does meiosis occur in True Mosses to produce haploid spores?

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

    What is the function of the calyptra in True Mosses?

    <p>Protects the sporangium</p> Signup and view all the answers

    What is the function of paraphyses in bryophytes?

    <p>Protection and water retention</p> Signup and view all the answers

    Where are antheridia clustered in bryophytes?

    <p>Leafy structures called splash cups</p> Signup and view all the answers

    What is the method of sperm dispersal in bryophytes?

    <p>By splashing out from splash cups</p> Signup and view all the answers

    How do gametophytes of hornworts (Phylum Anthocerophyta) differ from other bryophytes?

    <p>They are more vertical than horizontal</p> Signup and view all the answers

    Bryophytes are thought to have evolved from?

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

    In Bryophytes, the gametophyte is...

    <p>Haploid and dominant</p> Signup and view all the answers

    Both mosses and flowering plants...

    <p>have multicellular embryos</p> Signup and view all the answers

    Prokaryotes include...

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

    Which of these statements is false about sphagnum moss?

    <p>It contains substances that promote the rapid decay of organisms that die in it</p> Signup and view all the answers

    Peat moss (sphagnum)...

    <p>both B and C</p> Signup and view all the answers

    Which statement is true about members of the genus Marchantia?

    <p>Both B and C</p> Signup and view all the answers

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