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Plant Kingdom Test - 48

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Plant Kingdom Test - 48
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Thallus of Anthoceros is
  • Question 2
    1 / -0
    Laminaria is a
    Solution
    Laminaria is a genus of 31 species of brown algae commonly called "kelp". Some species are also referred to as tangles. This economically important genus is characterized by long, leathery laminae and relatively large size. 
    Therefore A is the correct option. 
  • Question 3
    1 / -0
    Food reserve of Laminaria is
    Solution
    • In brown algae,  Food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol. 
    • The vegetative cells have a cellulosic wall usually covered on the outside by a gelatinous coating of algin.  
    • So, the correct answer is "Mannitol'.
  • Question 4
    1 / -0
    In moss, stomata occur on
  • Question 5
    1 / -0
    Tetrasporophyte is found in
    Solution
    • Tetraspores are red algae spores produced by the tetrasporophyte (diploid) phase in the life history of algae in the Rhodophyta as a result of meiosis. 
    • The name is derived from the 4 spores that form after this meiosis, the division is of three kinds: cruciate, zonate, and tetrahedral. Hence, Tetrasporophyte is found in Gelidium.
    • So, the correct answer is "Gelidium'.
  • Question 6
    1 / -0
    Independent alternation of generations is present in
    Solution
    • All Pteridophytes have a true independent alternation of generations, in which a dominant sporophyte generation produces spores through meiosis, and a free-living gametophyte generation forms gametes (egg and sperm) by mitosis.

    So, the correct answer is option C.
  • Question 7
    1 / -0
    The structure that ruptures for dehiscence in moss capsule is
    Solution
    Operculum/lid is connected to the theca region by annulus. Internally the two are separated by peristome. Annulus dries and separates like a circular band holding the operculum and theca
    So, the correct answer is 'Annulus'
  • Question 8
    1 / -0
    The storage product of rhodophyceae is
    Solution
    • Floridian starch is the characteristic photosynthetic reserve substance of red algae, occurring abundantly in certain basin-shaped grain cells. 
    • Most Rhodophyceae store starch outside the chloroplast, often as a cap over a bulging pyrenoid. 
    • The major carbohydrate storage product of red algae is a type of starch molecule (Floridean starch), that is more highly branched than amylopectin. 
    • Floridian starch is stored as grains outside the chloroplast. so option D is correct
  • Question 9
    1 / -0
    Two algae which produce agar-agar are
    Solution
    The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from the genera Gelidium and Gracilaria. For commercial purposes, it is derived primarily from Gelidium amansii. In chemical terms, agar is a polymer made up of subunits of the sugar galactose. so option C is correct.
  • Question 10
    1 / -0
    Sterile uniseriate and multicellular hair present in receptacles of moss is
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