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Plant Kingdom Test - 66

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Plant Kingdom Test - 66
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Algae have cell wall made up of _______________.
    Solution
    The cell walls of algae are made up of mainly two components:
    a) The fribrillar component : Cellulose, mannans, xylans
    b) The amorphous component : galactans (polymers of galactose) such as agar and carrageenan
    So the correct answer is " Cellulose, galactans and mannans"
  • Question 2
    1 / -0
    Gametophytic plant body is nonvascular in
    Solution
    Algae are chlorophyll bearing, simple, thyroid autotrophic and large aquatic organism. They have a non-vascular body.
    Liverworts, being bryophytes, usually grow in moist and shady habitats. The plant body of liverworts is thalloid and nonvascular The main plant body is gametophyte. Ferns, gymnosperms and angiosperms are vascular plants
    Hence, the correct answer is 'Algae and liverworts'

  • Question 3
    1 / -0
    Which one has the larges gametophyte?
    Solution
    In bryophytes and pteridophytes and gymnosperms the male and female gametophytes to not have an independent free-living existence. They remain within the sporophyte. The gametophytes are quite large in Bryophytes as compared to other phyla like pteridophytes or angiosperms.
    So, the correct option is 'Moss'
  • Question 4
    1 / -0
    Which one of the following characteristics is found in all fungi but not in all bacteria?
    Solution
    Algae and fungi both respire Aerobically when a proper medium is present. The cell wall of fungi is made up of chitin and of bacteria is peptidoglycan, both of them can reproduce asexually however not all bacteria have circular DNA. so 'the correct option is - A long circular DNA lying loose in the cytoplasm'
  • Question 5
    1 / -0
    A plant in which only Anemophily occurs,  has unitegmic and orthotropous ovule with haploid endosperm belongs to _____
    Solution

    A. Pteridophytes – ovules are absent, pollination is absent

    B. Gymnosperms – Unitegmic, orthotropous  ovules with haploid endosperm and pollination is by anemophily takes place.

    C. Angiosperms. – Unitegmic or bitegmic ovules, different types of ovules- typically anatropous ovule and occurrence of triploid endosperm.

    D. Mosses - ovules are absent, pollination is absent

    So, the correct option is ‘Gymnosperms’. 
  • Question 6
    1 / -0
    The dominant photosynthetic phase in the life cycle of pteridophyta is equivalent to the
    Solution
    The correct answer is gametophytic phse of bryophytes.
    Bryophytes and Pteridophytes show an intermediate condition called the haplo-diplontic life cycle, where phases are multicellular. But the dominant phase differs. In Bryophytes, the dominant phase is the gametophyte and in Pteridophytes, it is the sporophyte.
  • Question 7
    1 / -0
    Choose the correct answers from the alternatives given.
    Red algae differ from green algae and brown algae in having:
    Solution
    The members of the brown algae family have a different type of gametes that are biflagellated zoospores. These are pear-shaped and have two unequally attached flagella
    The members of the family red algae reproduce asexually by non-motile spores and sexually by non-motile gametes. They do not have a flagellated stage in their life cycle.
    So, the correct option is 'no flagellated stages in their life cycles'
  • Question 8
    1 / -0
    Which of the following pigments do species of Chlorophyta share with higher plants?
    Solution
    Chlorophyta is commonly known as green algae. They are usually grass green due to the dominance of pigment chlorophyll a and chlorophyll b and these pigments are localized in the definite chloroplast. The higher plants also contain chlorophyll a and chlorophyll b pigments.
    So, the correct option is 'Both chlorophyll a and b'
  • Question 9
    1 / -0
    Of the following, the most recent ancestors of vascular plants were probably
    Solution
    The pteridophytes include horsetails and ferns. These are the first terrestrial plants that possessed the vascular tissue that is the xylem and phloem. These are considered as the ancestors of most of the vascular plants like angiosperms and gymnosperms.
    So, the correct option is C. 
  • Question 10
    1 / -0
    Choose the correct answers from the alternatives given.
    A major difference between algae and most fungi is that the former possess:
    Solution
    The Major difference between algae and most fungi is that algae are autotrophs and contains chloroplasts whereas fungi are heterotrophs. The algae contain complex composite cell wall made of cellulose. The Fungi have cell walls made up of chitin.
    Hence, the correct answer is 'both chloroplasts and cellulosic cell wall'.
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