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Plant Kingdom Test - 1

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Plant Kingdom Test - 1
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  • Question 1
    1 / -0

    Angiosperm: roots :: Phaeophyceae:

    Solution

    The plant body of phaeophyceae is usually attached to the substratum by a holdfast whereas the angiosperms attach to the substratum with the help of  roots.

  • Question 2
    1 / -0

    Which classes of algae possess chlorophyll a, chlorophyll b, carotenoids and xanthophylls?

    Solution

    Phaeophyceae possess chlorophyll a, c, carotenoids and xanthophylls. They vary in colour from olive green to various shades of brown depending upon the amount of the xanthophyll pigment, fucoxanthin present in them

  • Question 3
    1 / -0

    Largest unicellular organism is

    Solution

    Acetabularia is a genus of green algae, specially of  Polyphysaceae family. It is the largest unicellular organism.

  • Question 4
    1 / -0

    The book 'Historia Generalis Plantarum' was written by

  • Question 5
    1 / -0

    In Ulothrix or Spirogyra, reduction division (meiosis) occurs at the time of

    Solution

    In Ulothrix/Spirogyra reduction division (meiosis) occurs at the time of zygospore germination. Plant body of Ulothrix and Spirogyra, is gametophytic (haploid), they produce zoogametes (n) which fuses to form zygosporic (2n) diploid, which is a resting spore. Onset of favourable condition zygospore undergoes reductional division, or meiosis to produce zoo- meiospores.

  • Question 6
    1 / -0

    An algae with ribbon shaped chloroplast

    Solution

    Spirogyra is an algae that have long thread like structure having ribbon shaped chloroplast. Spirogyra is found in stagnant water forming green layer around the surface called pond scum.

  • Question 7
    1 / -0

    A research scholar once collected a certain alga and found that its cells contained chlorophyll a, chlorophyll d and phycoerythrin. The alga must belong to the class

  • Question 8
    1 / -0

    The half of the total carbon dioxide fixation on earth is carried out by algae through

    Solution

    Being photosynthetic, algae increase the level of dissolved oxygen in their immediate environment.

  • Question 9
    1 / -0

    All the florets are disc florets in

  • Question 10
    1 / -0

    The binomial name of French marigold is

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