Morphology of Flowering Plants Lecture 10 Quiz
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Questions and Answers

Which part of the plant is defined as the descending part of the plant axis?

  • Stem
  • Flower
  • Root (correct)
  • Leaf
  • What type of tropism does the root exhibit?

  • Positively phototropic
  • Negatively geotropic
  • Negatively thigmotropic
  • Positively hydrotropic (correct)
  • What do the cells of the root cap secrete for lubricating the passage of root through the soil?

  • Chlorophyll
  • Mucilage (correct)
  • Cellulose
  • Starch
  • In many hydrophytes like Pistia and Eichhornia, what replaces the root cap?

    <p>Root pocket</p> Signup and view all the answers

    What type of roots are generally cylindrical and non-green?

    <p>Fibrous roots</p> Signup and view all the answers

    What don't roots in hydrophytes like Pistia and Eichhornia need to do?

    <p>Penetrate hard soil</p> Signup and view all the answers

    What is the function of the region of cell division or meristematic region in roots?

    <p>This is the growing part of the root and is protected by the root cap</p> Signup and view all the answers

    What is the main function of the epiblema or piliferous layer in roots?

    <p>Presence of unicellular and unbranched root hairs for water absorption</p> Signup and view all the answers

    What is the role of the region of maturation or cell differentiation in roots?

    <p>Formation of different types of primary root tissue like cortex, endodermis, xylem, phloem</p> Signup and view all the answers

    What is the main function of lateral roots in plants?

    <p>Anchoring the plant firmly into the ground</p> Signup and view all the answers

    What is the purpose of root hairs in plants?

    <p>Absorption of water and nutrients from the soil</p> Signup and view all the answers

    What is a notable feature of epidermis with root hairs (epiblema) in roots?

    <p>Presence of unicellular and unbranched root hairs for water absorption</p> Signup and view all the answers

    What is the main function of the region of elongation in roots?

    <p>Absorption of mineral salts</p> Signup and view all the answers

    What is the primary function of root pockets in aquatic plants like Pistia and Water hyacinth?

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

    What is responsible for the absorption of mineral salts in roots?

    <p>Region of elongation</p> Signup and view all the answers

    Apart from anchoring, what is another function performed by roots to prevent soil erosion?

    <p>Preventing soil erosion by binding soil particles together</p> Signup and view all the answers

    Which of the following characteristics is NOT associated with plants?

    <p>Chitin cell walls</p> Signup and view all the answers

    What major evolutionary development allowed embryos to leave the parent plant encased in a resistant coat with a food supply?

    <p>Origin of the seed</p> Signup and view all the answers

    What specific adaptation played a crucial role in protecting gametes and embryos from desiccation?

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

    From which group of organisms did plants evolve?

    <p>Charophyceans with chl</p> Signup and view all the answers

    What allowed plants to move from water (algae) to land approximately 400 million years ago?

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

    What type of autotrophic organisms have cellulose cell walls and store carbohydrates as starch?

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

    Which type of plants lack true roots, stems, and leaves?

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

    What is a notable characteristic of mosses?

    <p>No true roots and simple stems</p> Signup and view all the answers

    In which type of plants are needle-shaped leaves a common characteristic?

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

    Where are the spore-producing organs located in ferns?

    <p>On the underside of leaves</p> Signup and view all the answers

    Which division of plants includes whiskferns and lacks many terrestrial adaptations?

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

    Which type of plants have a trend toward increasing dominance of the diploid sporophyte?

    <p>Vascular plants</p> Signup and view all the answers

    What is a characteristic of dicotyledons?

    <p>Parallel veins in leaves</p> Signup and view all the answers

    Which group of plants produces flowers and fruits?

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

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