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Biology Test 276

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Biology Test 276
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Weekly Quiz Competition
  • Question 1
    4 / -1

     Archaebacteria differ from eubacteria in:

    Solution

    Correct option is A. Cell wall

     

  • Question 2
    4 / -1

    Solanum, Panthera, Homo are examples of:

    Solution

    Solanum, Panthera, Homo are examples of Genera.

    Example:

    1. Potato → Genus: Solanum; 
      Species: tuberosum
    2. Human → Genus: Homo;
      Species: sapiens
    3. Lion → Genus: Panthera; 
      Species: leo

    Hence, the Correct Answer is C

    NCERT Reference: Topic “Genus” from Chapter "The Living world" of NCERT

     

  • Question 3
    4 / -1

     Five kingdom system of classification suggested by R.H. Whittaker is based on: 

    Solution

    Correct option is A.  All of these

    Explanation of the correct option:

    1. R. H. Whittaker recommended the Five Kingdom Classification in 1969.
    2. He partitioned living creatures into five realms Monera, Protista, Fungi, Plantae, and Animalia.
    3. The grouping depended on the cell structure like a prokaryotic cell or eukaryotic cell, cell divider constituents, and so forth body organization, method of sustenance (autotrophic, heterotrophic), propagation, and phylogenetic connections.

    Final answer: The Five Kingdom Classification suggested by R. H. Whittaker was based on the complexity of body organization, mode of nutrition, and presence or absence of a well-defined nucleus.

     

  • Question 4
    4 / -1

    A taxon can be defined as _________

    Solution

    A taxon is a taxonomic group of any ranking whereas a group of related species is the genus and a group of related families is the order.

    Biodiversity is the number and type of organisms present on Earth.

    Hence, the Correct Answer is B

    NCERT Reference: Topic- TAXONOMIC CATEGORIES” of chapter "The Living world" of NCERT

     

  • Question 5
    4 / -1

    In multicellular organisms _____refers to the production of progeny possessing features more or less similar to those of parents.

    Solution

    Reproduction ensures the continuity of the species, generation after generation. Genetic variation is created and inherited during reproduction.

     

  • Question 6
    4 / -1

    Which of the following is correctly matched?

    Solution

    Coelenterates have radial symmetry. Aschelminth are pseudocoelomates. Molluscs do not show metamerit Sponges are diploblastic.

     

  • Question 7
    4 / -1

    Frogs are ______

    Solution

    Frogs are carnivores. This means that their diets consist of food material which are solely animal in origin. Frogs normally feed on insects such ad flies, mosquitoes, dragonflies and worms.

     

  • Question 8
    4 / -1

    Which of these characteristics of frog is the reason for its short alimentary canal?

    Solution

    Frogs are carnivorous. This means that their diet consists of food which is purely of animal origin. For this reason, the length of its intestine is reduced. Thus, frogs have a short alimentary canal.

     

  • Question 9
    4 / -1

    Cardiac muscle cells differ from striated muscle cells in having _______________.

    Solution

    The cardiac muscle fibres are uninucleate and their nuclei are centrally placed. Striated muscle fibres are multinucleated and their nuclei lie at irregular intervals.

     

  • Question 10
    4 / -1

    The figures given below show the types of coelom. Identify them and select the correct group of organisms which possess them.

    Solution

    Figure 'A' is of coelomates (Annelids), Figure 'B' is a pseudo-coelomates (Aschelminthes) and Figure 'C' is a acoelomates (Plathyhelminthes).

     

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