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Biological Classification Test - 67

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Biological Classification Test - 67
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  • Question 1
    1 / -0
    Sexual stages of pathogens of Blast of Rice and Red Rot of Sugarcane are named repectively :
  • Question 2
    1 / -0
    In Mucor, conjugation results in :
    Solution
    In Mucor, sexual reproduction takes place by gametangial conjugation. After maturation of gametangia, the common wall at the point of their contact dissolves and the protoplast of both the gametangia unite to form zygospore.
    So, the correct answer is 'Zygospore'

  • Question 3
    1 / -0
    Lichen depicts :
  • Question 4
    1 / -0
    Cladonia rangiferina is,
    Solution
    It is a light-colored, fruticose lichen belonging to the Cladoniaceae family. Its commonly called as reindeer lichen.
    So, the correct answer is 'Lichen'
  • Question 5
    1 / -0
    In Albugo, sexual reproduction results in the formation of :
    Solution
    The sexual reproduction in albugo gives rise to Oospore.
    So the correct option is C.
  • Question 6
    1 / -0
    Asexual reproduction in ascomycetous fungi takes place by :
    Solution
    Ascomycota sprout from spores into hapliod mycelia. These mycelia can produce two types of reproductive structures. First, they can produce conidiophores for asexual reproduction. Conidiaphores may simply branch off from the mycelia or they may be formed in fruiting bodies. Secondly, ascomycota produce structures for sexual reproduction called gametangia. 
    So the correc option is C.
  • Question 7
    1 / -0
    Heterotrophic fungi can live as :
    Solution
    Fungi depend on others for food. They cannot produce food on their own. Fungi can live as saprophytes (use dead and decaying materials as food).
    Fungi can be parasites (require a living protoplasm of a host organism for food)
    Some fungi exist in a symbiotic relationship (usually with algae). In this, the photosynthetic algal part provides food to the fungus. In return, the fungus provides support to the algal part.
    So, the correct answer is D.

  • Question 8
    1 / -0
    Short twisted strands of hyphae which serve as anchors for lichens are :
    Solution
    In lichens, rhizines are multicellular root-like structures, arising mostly from the lower surface.Rhizines serve only to anchor the lichen to their substrate; they do not absorb nutrients as do plant roots.
    So the correct option is A.
  • Question 9
    1 / -0
    Sexual reproduction in fungi can occur by means of :
    Solution
    Important sexual spores in fungi are:
    • Oospore
    • Ascospore
    • Basidiospore

    So the correct optoin is D.
  • Question 10
    1 / -0
    Lichen are composite organisms consisting of an alga and 
    Solution
    Lichens are symbiotic associations between an algal component (phycobiont) and fungal component (mycobiont)
    So, the correct answer is 'Fungus'
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