What is spore formation?

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Jasmine Grover

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Spore formation is a type of asexual reproduction that takes place in spores. Spores are unicellular bodies that are formed due to sexual or asexual reproduction in eukaryotic organisms including bacteria, algae, fungi, and plants.

  • Sporogenesis is the process through which spores are formed.
  • Spores are reproductive cells that form a new organism. They are mostly found in sacs that are called sporangia.
  • The hundreds of spores are collected in the sac by plants until it bursts.
  • These spores are then released into the air where they germinate to form a new plant.
  • Fungi such as Rhizopus, Penicillium, and Mushroom reproduce by spore formation.

Spore Formation

Examples of Spore Formation

  • Spores are formed in fungi on sporangium. Minute haploid spores are produced that grow into new organisms. E.g. – Penicillium.
  • Bacteria form another type of spore known as endospores. E.g. – Bacillus
  • Plants solely reproduce asexually through spore formation. They follow an alternation of the generation life cycles where haploid spores are produced by diploid sporophytes that ultimately produce haploid gametophytes. E.g. – liverworts

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CBSE CLASS XII Related Questions

  • 1.

    Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.

    Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

      • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
      • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
      • Assertion (A) is true, but Reason (R) is false.
      • Assertion (A) is false, but Reason (R) is true.

    • 2.

      Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.

      Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.

        • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
        • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
        • Assertion (A) is true, but Reason (R) is false.
        • Assertion (A) is false, but Reason (R) is true.

      • 3.

        Which of the following is a secondary consumer ?

          • Grasshopper
          • Cow
          • Fish
          • Hawk

        • 4.
          Identify the plant in which emasculation is not required for artificial hybridization.

            • Rice
            • Wheat
            • Pea
            • Papaya

          • 5.
            Choose a correct option that shows an interaction in which one species benefits while the other is neither harmed nor benefitted.

              • Mycorrhizal associations between fungi and roots of higher plants
              • Sea anemone and clownfish
              • Abingdon tortoises and goats in the Galapagos Island
              • Cuscuta on hedge plants

            • 6.
              In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

                • 25%
                • 50%
                • 75%
                • 100%
              CBSE CLASS XII Previous Year Papers

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