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Plant Kingdom Test - 23

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Plant Kingdom Test - 23
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  • Question 1
    1 / -0
    Meiosis (reduction division) in pteridophytes takes place at the time of _________________.
  • Question 2
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    Succession in a 6 metre deep pond exhibits a sequence of
    Solution
    Seres of biotic communities that develop in a newly formed pond or lake is called hydrosere. It starts as soon as the muddy water becomes clear. Seral stages starts with the submerged plants and the climax community is represented by trees.
  • Question 3
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    Warburg studied his effect on 
    Solution
    The effect on oxygen evolution of Chlorella vulgaris produced by light intensities up to about 40,000 has been studied by the use of the Warburg technique. Warburg (1919) performed flashing light experiment using green algae-chlorella as a suitable material for the study of photosynthesis.
  • Question 4
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    Top-shaped multiciliate male gametes, and the mature seed which bears only one embryo with two cotyledons, are characteristic features of -
  • Question 5
    1 / -0
    The most advanced forms of algae are
    Solution
    • Green algae of Chlorophyceae is considered as the most advanced forms of algae because of the following reasons:
    • a)Chlorophyceae have chlorophylls a and b and store starch as a reserve food material inside their plastids.
    • b)It is a diverse group of algae and most of them are freshwater forms.
    • c)The cells possess one too many chloroplasts which occur in characteristic shapes in different forms and this is the important reason and no other algae exhibit many chloroplasts like Chlorophyta.
    • Hence the most advanced forms of algae are Green algae of Chlorophyceae.
    • So, the correct answer is 'Green algae of Chlorophyceae'.
  • Question 6
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    SrCharactersPlant group IPlant group IIPlant group IIIPlant group IV
     1.AutotrophicYesYesYesYes
    2.TerrestrialNoYesYesYes
     3.Presence of vascular tissueNoYesYesNo
     4.Flower producedNoNoYesNo
    Shirin had been on a holiday to Ooty. In her school, she has studied the interesting world of plants. On the day of her return, she collected four groups of plants I, II, III, and IV. She carefully noted some of their details and arranged the information in the form of a table as given below. She asked her teacher how to identify which group is of pteridophytes. Take a look at the data and suggest which of the groups could be of Pteridophytes and why?
    Solution
    • The pteridophytes are the terrestrial vascular plants which have body differentiated into roots, stem, and leaves. 
    • These are the first plants to have vascular tissues. 
    • The plants possess chlorophyll pigments, which help to perform photosynthesis and so they are autotrophic. 
    • These plants reproduce through spores as they don't have flowers.
    Thus, the correct answer is option B. 
  • Question 7
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    Which of the following pairs are wrongly matched?
  • Question 8
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    Which of the following is an incorrect match for chlorophyll type?
    Solution
    Chlorophyll a is essential for most photosynthetic organisms to release chemical energy but is not the only pigment that can be used for photosynthesis. All oxygenic photosynthetic organisms use chlorophyll a, but differ in accessory pigments like chlorophyll b. 
    Chlorophyll b is an accessory photosynthetic pigment. Chlorophyll b exists in all phototrophs other than diatoms, Cyanobacteria and Algae. 
    Chlorophyll C is found in certain marine algae, including the photosynthetic Chromista (e.g., diatoms, brown algae) and dinoflagellates. 
    Chlorophyll d is present in marine Algae and Cyanobacteria and red algae. 
  • Question 9
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    Pteridophyta do not have
    Solution
    Pteridophytes comprise of a group of roughly 12,000 species of vascular plants that reproduce via spores and have neither seeds nor flowers, e.g., fern. They differ from mosses by being vascular (i.e., having water-conducting vessels). They have stems and leaves like other vascular plants. 
  • Question 10
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    Carpogonium is ......... gametangium of .................
    Solution
    Carpogonial branches are the female gametangium of red algae. They are often very thin hair-like cells with a bulbous base and a twisted upper part.
    Thus, the correct answer is option A.
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