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Plant Kingdom Test - 94

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Plant Kingdom Test - 94
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Archegonium is absent in _____.
    Solution
    Archegonium are female sexual organ present in plants. Thallophytes are most primitive type of plants which include algae. The mode of reproduction in algae is asexual or sexual. Sexual reproduction occurs through the anisogamous or isogamous gametes or through oogamy. There are no separate sexual organs in thallophytes. Bryophytes, Pteridophytes and Gymnosperms are higher than thallophytes and posses different sexual organs such as archegonium.
     Therefore option C "Thallophytes" is correct 
  • Question 2
    1 / -0
    Plant group in which every cell of gametangium can form gametes is ?
    Solution
    Gametangium is the sexual organ or cell where gametes are produced. It is found in algae, protists, fungi and gametophyte of plants.  In Thallophytes, the reproductive organs are unicellular . When these are multicellular every cell in organ produces gametes. therefore option A "Thallophyta" is correct option. 
  • Question 3
    1 / -0
    Dominant gametophytic phase alternated by multicellular dependent sporophyte occurs in
  • Question 4
    1 / -0
    Algae attached to stone surfaces are called
    Solution
    The algae growing attached to stones and rocky surfaces are called lithophytes. Epilithic algae are found attached on surface of rocks, e.g Rivularia, Gloeocapsa, Pleurocapsa, Ectocarpus, Polysiphonia etc.
  • Question 5
    1 / -0
    Which is important in development of seed habit?
  • Question 6
    1 / -0
    Mitospores of algae differentiate through _____.
  • Question 7
    1 / -0
    Pseudopodium in Sphagnum is
  • Question 8
    1 / -0
    Identify the correct pair of characters with reference to Pteris. $$I$$. Neck canal cell is uninucleated $$II$$. Stem grows vertically in soil $$III$$. Apogamously produced sporophytes are haploids $$IV$$. Open dichotomous venation in leaflets.
  • Question 9
    1 / -0
    Hydroids and leptoids were first found in
    Solution
    A leptoid is a type of elongated food conducting cell analogous to phloem in vascular plants. It is found in the stem-like structure of certain mosses, like those belonging to family Polytrichaceae. They surround strands of water and mineral conducting elements the hydroids, analogous to trachieds in vascular plants.
    So, the correct answer is 'Mosses'
  • Question 10
    1 / -0
    Carpogonium occurs in
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