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Biological Classification Test - 86

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Biological Classification Test - 86
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Rod shaped bacteria are called?
    Solution
    Bacteria are the smallest cell wall having prokaryotes with are a unicellular, microscopic and cosmopolitan organism.
    The bacteria have different shapes such as the Cocci which are the bacteria that are round or oval in shape.
    The bacilli bacteria are the ones that have aros shape structure.
    The spirilli are the spiral bacteria.
    And Vibrio is the bacterial shape that includes bacteria that are comma-shaped.

    So, the correct option is 'Bacilli'
  • Question 2
    1 / -0
    Maximum modes of nutrition occur in ____________.
    Solution
    Monerans are the group of organisms that show the maximum number of modes of nutrition. Some of the monerans like Cyanobacteria are autotrophs and can produce their own food, while some others like E. coli are heterotrophs and depend on other organisms for their food. Some of them also live as saprophytes, parasites, commensal, etc.
    So, the correct answer is 'Monera'.
  • Question 3
    1 / -0
    Most of the lichens consists of?
    Solution
    Lichens are a group of plants, formed by the association of algae and fungi. Most of the lichens consist of Green algae and ascomycetes living in symbiotic relationship. So the correct answer is option C, Blue-green algae & Ascomycetes.

  • Question 4
    1 / -0
    Methanogens and Thermococcus bacteria are similar in the presence of 
    Solution
    Cyclosis refers to the cyclic movement of cell protoplasm or cytoplasm. it is found in the majority of cell. It is found in Methanogens and Thermococcus bacteria. These bacteria do not possess a cellulosic cell wall. Also there is no such red pigment found in cell membrane. Presence of introns is a character of eukaryotic cells. 
    Thus, the correct answeris 'cyclosis'.
  • Question 5
    1 / -0
    Sexual life cycle of toadstools is different from Albugo in the presence of
    Solution
    B. Diplophase
    Solution : Albugo is a phycomycete where the sexual reproduction occurs by the fusion of two gametes from zoospores. But in toadstools that belong to basidiomycete there is diploid phase in life cycle where the nucleus of two cells are together (n+n). Meiosis occurs in the diplophase of those fungi.
    So the correct answer is "Diplophase".
  • Question 6
    1 / -0
    Spermatization type of sexual reproduction found in-
    Solution
    Sexual reproduction takes place by spermatization between spermatia and receptive hyphae. It occurs in Ustilago which belongs to the phylum Basidiomycota.
    So, the correct option is 'Ustilago'. 
  • Question 7
    1 / -0
    Circular DNA molecule occurs in?
    Solution
    • Bacteria is a prokaryotic organism. It has single, circular DNA. The bacterial genome leads ranges from 130 kbp to 14 Mbp. The genetic material is in direct contact with the cytoplasm. 
    • The region of the cytoplasm where the genetic material is present is known as a nucleoid. The circular DNA undergoes transcription and translation and synthesizes bacterial proteins. 
    • The chloroplast is a semi-autonomous organelle which has circular DNA. It is known as Ct-DNA which helps to synthesize the protein for the organelle. ct-DNA acts as plasmid and it is used for genetic manipulation.
    • Mitochondria is a semi-autonomous organelle which can synthesize its own protein. It has circular DNA which is known as mt-DNA. mt-DNA acts as plasmid and it is used for genetic manipulation.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    Lichen and mosses do not grow in :-
    Solution
    Solution: Lichens are used as the indicators of air pollution. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially $$SO_2$$ (sulphur dioxide) can damage lichens and check them from growing. Places where lichens are not going, it indicates the air heavily polluted with sulphur dioxide.
    So the correct answer is "$$SO_2$$ polluted area"

  • Question 9
    1 / -0
    Lichens are mutualistic relationship between:
    Solution
    D. Both (A) and (B)
    Solution: Lichens are mutualistic association between algae and fungi. Most of the time the algae is a cyanobacteria. In this association, the algal part produces food by photosynthesis and supplies that to the fungal part. On the other hand, the fungal part adsorbs water and minerals from soil and supplies those to the algal part. In this association, both the organisms are benefited and hence it is an example of mutualism.
    So the correct answer is "Both (A) and (B)".
  • Question 10
    1 / -0
    A lichen having much branched system of cylindrical or ribbon-like branches but a small thallus, is called as?
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