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Biological Classification Test - 73

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Biological Classification Test - 73
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  • Question 1
    1 / -0
    A teacher explaining physical contact leading to equal physiological dependence between two thalloid forms was telling about
    Solution
    Lichens are formed by the physical association between fungal partner and the algal partner. The fungal partner acts as a mycobiont and algal partner acts as a phycobiont. In lichens, fungus grow around algae and provide bulk for their growth. The algae and fungus association is must for lichens to reproduce. So, they are physically dependent on each other. Here, both fungus and algae are in their thalloid forms.
    So, option D is the correct answer.
  • Question 2
    1 / -0
    Which one of the following is best indicator of $$SO_2$$ pollution ? 
    Solution
    Lichens are the best indicator of environmental pollution mainly $$SO_2$$. Lichen is a mutualistic association of algae and fungi. In areas of excessive $$SO_2$$ pollution, lichens cannot grow but only green algae may be seen, thus acting as an indicator for $$SO_2$$.
    Hence correct answer is option C. 
  • Question 3
    1 / -0
    Methanogens are best described as ____________.
    Solution
    Methanogens are a morphologically diverse group of archaebacteria. The methanogens are unicellular microorganism and obligate anaerobes extremely sensitive to oxygen. They lack organelles and have no nucleus in their cells similar to prokaryotic cells.
    So, the correct answer is option A. 
  • Question 4
    1 / -0
    Which of the following pairs are correctly matched?
    a. Wood rooting - Fomes
    b. Coprophilus - Peziza
    c. Primary rock colonizers - Nidularia
    Select the correct answer using the codes given.
    Solution
    • Fomes is a genus of perennial woody fungi in the family Polyporaceae.
    • Coprophilous fungi are a type of saprobic fungi. It is growing on animal dung. The hardy spores of coprophilous species are unwittingly consumed by herbivores from vegetation. 
    • Peziza is a large genus of saprophytic cup fungi. It grows on the ground, rotting wood, or dung.
    So, the correct answer is option A.
  • Question 5
    1 / -0
    Most primitive mammal is 
    Solution
    There are three living genera of primitive mammals from Australia classified as Monotremes-The Duck billed platypus and 2 genera of Echidna.
    So the correct answer is platypus.
  • Question 6
    1 / -0
    Both algae and fungi are NOT independently capable of initiating serial changes on bare rocks but lichens can do so because they.
  • Question 7
    1 / -0
    Red rust of tea is caused by _______.
    Solution
    Red rust on tea is caused by the parasitic filamentous green algae, Cephaleuros parasiticus. This alga with its 14 species is parasitic to important economic plants, such as tea, coffee, mango, guava and causes damage such as algal growth on leaves. The disease cycle starts when the hosts are inoculated with sporangia are deposited on susceptible host tissues. 
    So, the correct answer is option A.
  • Question 8
    1 / -0
    Chitin is an important cell-wall component in ___________.
    Solution
    Chitin is a flexible material that is insoluble in water. Plants, bacteria and protists are not able to make chitin. It is the main component of cell walls found in plants, bacteria, fungi which is composed mostly of glycoprotein.
    So, the correct answer is option B.
  • Question 9
    1 / -0
    Consider the following criteria.
    a. Cell type
    b. Level of organization
    c. Mode of reproduction
    d. Mode of nutrition.
    The criteria which formed the basis of the five-kingdom classification include.
  • Question 10
    1 / -0
    In Eusporangiate ferns, the sporangium is derived from a group of _____________.
    Solution
    D. Surface cells of sporophyll
    Solution : The cells which are adjacent to these cells also contribute to the formation of the wall or stack of the sporangium and its sporophyll wall.
    So, the correct answer is "Surface cells of sporophyll".
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