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Plant Kingdom Test - 93

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Plant Kingdom Test - 93
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Haploid condition is shown by
    I. Spore
    II. Sporophyte
    III. Gametophyte
    Solution
    Sporophyte develops by diploid zygote and hence is diploid. Spores are produced on sporophyte by meiosis and hence are haploid. Haploid spores develop mitotically into the haploid multicellular gametophyte. Thus, spores and gametophyte exhibit haploid condition while sporophyte is diploid. 
    Therefore, the correct answer is option C.
  • Question 2
    1 / -0
    Diatomaceous earth is obtained from
    Solution
    Cells of diatoms (Bacillariophyceae) are surrounded by the cell wall, deposited with silica called as frustules which are composed of two overlapping halves (the epitheca and the hypotheca). Shells of diatoms are highly resistant to decomposition due to the presence of silica and are deposited in ocean beds leading to the formation of the diatomaceous earth. Thus, the correct answer is option A.
  • Question 3
    1 / -0
    Which class of algae reproduces asexually by non-motile spores and sexually by non-motile gametes?
    Solution
    The algae which belong to the group Rhodophycaea can reproduce sexually as well as asexually. In asexual reproduction, the non-motile spores are produced which form the new cell body. The sexual reproduction is the fusion of the non-motile gametes to form the embryo which develops to form the new algal body.
    Thus, the correct answer is option A. 
  • Question 4
    1 / -0
    Brown algae have a characteristic pigment ______.
    Solution
    Brown algae or Phaeophyceae have pigments like chlorophyll a , chlorophyll c and fucoxanthin. It  is a dominant pigment which give brown or olive color to brown algae. Phycocyanin and Phycoerythrin are pigments present in red algae or Rhodophyceae. Haematochrome is yellow , orange or red pigment present in certain green algae or Chlorophyceae. Therefore option B "Fucoxanthin" is correct option
  • Question 5
    1 / -0
    Thermal algae survive at
  • Question 6
    1 / -0
    Frog Spawn Alga is
    Solution
    Batrachospermum is one of the fresh water forms of Rhodophyceae. This alga is found in slow running shallow streams and on the banks of lakes and ponds. The alga is also known as the frog spawn or the eggs of frog, because the plants are mucilaginous, moniliform or beaded in appearance to the naked eye.
    So, the correct answer is 'Batrachospermum'
  • Question 7
    1 / -0
    Zygotic meiosis occurs in _____.
  • Question 8
    1 / -0
    Accessory photosynthetic pigments, phycoerythrin and phycocyanin, occur in
    Solution
    Option 'A' is correct 
    Phycobiliens are group of accessory pigments
    found is red and blue - green algae. The 
    phycobilins are classified as phycorythrin
    and phycocyanies. These have open chain
    Tetraphyrrale structure and are hot water
    soluble pigments. Phycobilins are the Major
    photosynthetic pigment where phycocyanis pigment
    which are light Blue is color are found is blue 
    green algae where as phycoerythrin are red is 
    color and are found is red algae.     

  • Question 9
    1 / -0
    Ancestors of land plants possessed
    Solution
    Ancestors of land plants are considered to be the green algae. Every plant and its part becomes an habitat for some organism. Arboreal habit is that place where organisms live and feed . it includes root of trees, canopies of rainforest, branches, leaves or even holes of trees. Heterotrichous habit is considered to be most evolved habit in green algae which has two branches . one is prostrate and erect branches. Therefore option B "Heterotrichous habit" is correct answer.
  • Question 10
    1 / -0
    Photosynthetic pigment capable of absorbing green light is
    Solution
    Pigments play an important role in providing color or light absorption. Different pigments are present in different plants and algae to carry out their particular function as per pigment and plant nature. Chlorophyll is an important pigment responsible for carrying out photosynthesis and give green color to plants. it is present in green plants and algae. The red protein, phycoerythrin is an accessory pigment to main chlorophyll pigment and is present in red algae which plays an important role in absorption of green light  through phycobiliproteins phycocyanin and allophycocyanin.  Carotenoids are other accessory light harvesting pigment and photoprotective agent. Therefore option C "Phycoerythrin" is correct option.
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