Self Studies
Self Studies
Self Studies
Self Studies

Biological Classification Test - 92

Result Self Studies

Biological Classification Test - 92
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Which one of these species has one meganucleus and two micronuclei?
    Solution
    Paramecium aurelia belonging to phylum ciliophora are unicellular organisms. It is a complex organism and has cytoplasm in which all the components of cells are dispersed. It has two types of nuclei i.e., meganucleus and micronuclei. The mega-nucleus controls metabolism such as feeding and maintenance and is polyploid, whereas the micronucleus takes an important role in reproduction and is diploid 
    Thus, the correct answer is option A.
  • Question 2
    1 / -0
    Thin thread like bacteria, which appears like fungal hyphae are known as
    Solution
    Actinomycetes are placed under the kingdom Monera in the group of bacteria. These are the Gram-positive bacteria which possess specialised cells which divide and form chain-like filamentous structures. These filaments are the thin thread like which resemble the hyphal filaments of the fungi. 
    Thus, the correct answer is option C. 
  • Question 3
    1 / -0
    Adhesive pad of fungi penetrate the host with the help of
    Solution
    • The adhesive pad of fungi penetrates the host with the help of mechanical pressure and enzymes. 
    • It pushes against the cell wall of the host and releases cellulase to digest the cellulose of the host cell wall so that the hypha is able to penetrate the host cell wall.

    So the correct answer is option A.
  • Question 4
    1 / -0
    The discovery of virus has placed the problem of the origin of life in new light and it is believed that higher forms of life have descended from
    Solution
    For life to have descend from virus, they must have been from free-living virus only which means they lived independently because at the time of origin there would not have been other species to support virus. So, they could not have been parasitic or dependent. 

  • Question 5
    1 / -0
    Which of the following act for protection of body (defensive) in some Protozoa?
    Solution
    'Trichocyst' is a structure in the cortex of certain ciliate and flagellate protozoans. It consists of a cavity and long, thin threads that can be ejected in response to certain stimuli. So, they act as defensive organs.
  • Question 6
    1 / -0
    Lichens are well known combination of an alga and a fungus where fungus has 
    Solution
    Symbiosis in lichens is the mutually helpful symbiotic relationship of green algae and/or blue-green algae (cyanobacteria) living among filaments of a fungus. The fungus benefits from the algae or cyanobacteria, because they produce food by photosynthesis. The algae or cyanobacteria benefit by being protected from the environment by the filaments of the fungus, which also gather moisture and nutrients from the environment, and provide an anchor to it.
    Thus, the correct answer is option C.
  • Question 7
    1 / -0
    In the following table, identify the correct matching of the crop, its disease and the corresponding pathogen.
    Crop       DiseasePathogen
    A.Citrus  -  Canker1.Xanthomonas axonopodis
    B.Potato  -   Late blight2. Fusarium udum
    C.Brinjal  -   Root knot         3.Meloidogyne incognita
    D.Pigeon pea -  Seed gall4. Phytophthora infestans;
    Solution

    Citrus crop canker is caused due to Xanthomonas axonopodis.

     Late blight of potato is caused due to Phytophthora infestans .

    Root knot in brinjal is because of the pathogen Meloidogyne infestans . 

    Pigeon pea seed gall is caused by Fusarium udum.

    Thus, the correct answer is option b.

  • Question 8
    1 / -0
    A lichen having much branched system of cylindrical or ribbon-like branches but a small thallus, is called as
    Solution
    Fruticose lichen ususally round in cross secetion (terete), and most are branched. They can be like little shrubs growing upward, or they can hang down in long strands. The fruticose lichens have much branched cylindrical, ribbon-like, flattened or sometimes filamentous thalli. 
  • Question 9
    1 / -0
    Which of the following plants can carry out photosynthesis even at $$-20^{\circ}C$$ or below freezing point?
    Solution
    Epilithic antarctic lichens are known to have temperature compensation points well below, $$0^0$$C, and probably have some photosynthetic metabolism even around -$$15^0$$C. Photosynthesis below the freezing point could be explained either by the presence of a solute, which prevents ice formation or the carbon fixation enzyme, ribulose bisphosphate carboxylase, remains active at subzero temperatures. 
    So, the correct answer is option D.
  • Question 10
    1 / -0
    Lichen is a pioneer vegetation of
    Solution
    A lithosere is a plant life, that begins its cycle on a newly exposed rock surface. The first organisms or pioneers, that colonize lithoseres are lichens. Of these lichens are extremely resilient and are capable to survive through their symbiotic relationships of their phycobionts.
    Thus, the correct answer is option C.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now