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Plant Kingdom Test - 47

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Plant Kingdom Test - 47
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Rolling algae is
  • Question 2
    1 / -0
    Brown colouration of Phaeophyceae is due to excess
    Solution
    Phaeophyceae are brown algae that are mostly marine in habitat. Their brown colour is due to the golden brown xanthophyll pigment fucoxanthin. They are multicellular, plant body is called thallus and are immobile.
    So, the correct answer is option A.
  • Question 3
    1 / -0
    A thallus refers to plant body having
    Solution
    • The term thallus is a botanical term that refers to the body of a plant that does not have leaves, stems, and roots.
    • A thallus is composed of filaments or plates of cells and ranges in size from a unicellular structure to a complex tree-like form.
    •  Hence, A thallus refers to a plant body having no distinction of stem, leaves, and roots. Option D is correct. 
  • Question 4
    1 / -0
    Sea weeds belong to which of the following groups of algae?
  • Question 5
    1 / -0
    Chlamydomonas differs from Spirogyra and Ulothrix in having
    Solution
    Chlamydomonas differs from spirogyra and Ullothrix
    in having Glycoprotein instead of cellulose in cell wall
    other eukaryotic cell walls Algal cell walls contain 
    either polysaccharides or a variety of Glycoproteins
    or both.

  • Question 6
    1 / -0
    Coenobium occurs in
    Solution
    Volvox thallus is a motile colony with definite shape and number of cells. This habit of thallus is called coenobium.The colony is hollow, spherical or oval in shape and the size of colony is about the size of a pin head. The number of cells in a colony is fixed. Depending upon the species of Volvox the cells can be 500-60,000. The central part of colony is mucilaginous and the cells are arranged in a single layer on periphery of the colony.
    Hence the correct option is C.
  • Question 7
    1 / -0
    Kombu, an article of marine food is
    Solution
    • Kombu is edible kelp mostly from the family Laminariaceae.
    • It is widely eaten in East Asia. eg: Laminaria. Hence, Kombu, an article on marine food is Laminaria.
    • So, the correct answer is "Laminaria'.
  • Question 8
    1 / -0
    Carpogonium is
    Solution
    Female sex organ, called a carpogonium, consists of a uninucleate region that functions as the egg and a trichogyne, or projection, to which male gametes become attached. 
    Therefore B is the correct option. 
  • Question 9
    1 / -0
    On germination a moss spore produces
  • Question 10
    1 / -0
    Reproduction by autospores occurs in
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