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Biological Classification Test - 66

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Biological Classification Test - 66
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Ainsworth has placed Rhizopus in ________.
    Solution

  • Question 2
    1 / -0
    Reindeer Moss is :
    Solution
    Reindeer moss is lichen that is a fruticose lichen found in great abundance in Arctic lands. It is an erect, many branched plant that grows up to 8 cm hight covers immense areas and serves as pasture for reindeer, moose, caribou, and musk oxen.
  • Question 3
    1 / -0
    A harmful lichen is 
    Solution
    • Letharia vulpina is toxic to mammals due to the yellow pigment vulpinic acid.
    • It has been used historically as a poison for wolves and foxes.  Hence, A harmful lichen is Letharia.
    • So, the correct answer is "Letharia'.
  • Question 4
    1 / -0
    Zygospore is formed from :
    Solution

    Correct Option: A

    Explanation:

    • Zygospores are the asexual spores produced in the zygomycetes.
    • Zygospores are strong and resistant spores generated by the fusing of two nuclei of two haploid cells and the formation of gametangia to produce zygote and then the zygospore.
    • In gametangial copulation, the male and female gametangia come into close contact with each other but do not fuse.
    • A fertilization tube is produced where male gametangium enters female gametangium and male gamete goes through.
    • Two gametangia or their protoplasts unite to form a zygospore.

    Hence, zygospore is formed from gamentangial copulation.

  • Question 5
    1 / -0
    Structure helping lichens in respiration is 
  • Question 6
    1 / -0
    Select the correct match :
    Solution
    Symbiosis in lichen is the mutually helpful symbiotic relationship of green algae living among the filaments of a fungus, forming a lichen. Example, Usnea
    So, the correct answer is 'Symbiosis - Lichen'
  • Question 7
    1 / -0
    Which of the following is incorrect ?
    Solution
    Correct Option: A
    Explanation:

    • Rhizopus is a genus of common saprophytic fungi on plants and specialized parasites on animals. Rhizopus produce by forming asexual and sexual spores.
    • In asexual reproduction, the haploid sporangiopores are produced inside a spherical structure, the sporangium. In sexual reproduction, a dark zygospore is produced at the point where two compatible mycelia fuse.
    • Thus, the correct answer is option (A). 
  • Question 8
    1 / -0
    Lichen growing on wood is called :
    Solution
    • In biology that lives in dead wood, leaves, or sticks, or organic debris is called as lignicolous. 
    • Lichens which grow on wood are called lignicolous, e.g., Cephalium.
    • Hence the correct answer is option B. 
  • Question 9
    1 / -0
    What are the successive structures formed in course of sexual reproduction in Rhizopus?
  • Question 10
    1 / -0
    Asexual spores formed by Colletotrichum faleatum, Sphaelotheca sorghi and Rhizopus stolonifer are :
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