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Plant Kingdom Test - 82

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Plant Kingdom Test - 82
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which one minerals is part of algal cell wall?
  • Question 2
    1 / -0
    Read the statements given below and identify the correct ones:
    (i) Chemotaxonomy is based on the similarities and dissimilarities in the structure of certain chemical compounds among the organism.
    (ii) Karyotaxonomy is based on the nuclear and chromosomal studies.
    (iii) Term taxonomy was coined by Linnaeus.
    (iv) ICBN is for the nomenclature of bacteria.
    Solution
    $$\rightarrow$$(i) and (ii) are correct.
    $$\Rightarrow$$ Sexual reproduction is absent in prokaryotes and some protists. In such cases and fossils morphological difference, (karyotaxonomy) and chemotaxonomy are resorted.
    i) At the molecules level there is similarity in the types of proteins, enzyme and other biochemicals (chemotaxonomy) 
    ii) All the members of a species have similar karyotypes-these is similarity in the no, size and shape behaviour of meiotic chromosome.
    iii) Term taxonomy was coined by de candolle, $$1813$$.
  • Question 3
    1 / -0
    Mosses may also kills 'mycorrihizal fungi' that help trees to absorb
  • Question 4
    1 / -0
    Water helps in the growth of plants, but plants not grow well in a soil flooded with water. The appropriate reason for this is that the?
  • Question 5
    1 / -0
    Which of the following was not flourishing in Jurassic period?
  • Question 6
    1 / -0
    Amphibians among plants belong to ___________.
    Solution
    Bryophytes are called amphibians of the plant kingdom as they live on land but require water for sexual reproduction. Hence the correct option is B.
  • Question 7
    1 / -0
    Spermatozoa receive nutrition from
    Solution

    • The epididymis is a long, coiled tube that stores sperm and transports it from the testes. 
    • The smooth muscle of the epididymis pushes the sperm along tubule with slow waves of peristalsis so that the sperm traverse its entire 20-foot length in about two weeks. 
    • During this time the sperm is supplied with nutrients secreted from the lining of the epididymis and incubated while it matures.
    •  Hence, Spermatozoa receive nutrition from Epididymis.
    • So, the correct answer is 'Epididymis'.
  • Question 8
    1 / -0
    Which of the following statements are correct?
    1. Numerical taxonomy which is now easily carried out using computers is based on all observable characteristics.
    2. Number and codes are assigned to all the characters and the data are then processed.
    3. Some important characters are given more importance.
    4. Cytological information like chromosome number are also included.
    5. At the same time hundreds of characters can be considered.
    Solution
    • Numerical taxonomy which is now easily carried out using computers is based on all observable characteristics.
    • Number and codes are assigned to all the characters and the data are then processed.
    • Some important characters are not given more importance.
    • Cytological information like chromosome number are not included.
    • At the same time hundreds of characters can be considered.
    • So, the correct answer is option D.
  • Question 9
    1 / -0
    'Minute floating' plants are mainly _______.
    Solution
    A. Algae
    Solution : Algae are the minute (mostly) floating plants in the sea as they can photosynthesize and float on sea water while bacteria, virus and fungi cannot be called plants because they does not belong to kingdom-plantae.
    So the correct answer is "Algae".
  • Question 10
    1 / -0
    A prothallus is 
    Solution

    A) Correct option C
    B) Explanation for the correct option:

    • In pteridophytes, gametophyte formed after the germination of haploid spores.
    • The haploid spores of pteridophytes develop into prothallus which is the gametophyte.
    • Prothallus is autotrophic, independent and free-living in nature.
    • The male and female sex organs can develop either on a single prothallus (monoecious) or on a different prothallus (dioecious).
    • Hence, a prothallus is a gametophyte and free-living structure formed in pteridophytes. 
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