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Reproduction in Plants Test - 5

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Reproduction in Plants Test - 5
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  • Question 1
    1 / -0
    In which of the following organisms fragmentation occurs?
    Solution

    • Fragmentation is a process of asexual reproduction in which the parent organism breaks up into two or more pieces/fragments, and each piece/fragment gives rise to a new individual. Spirogyra undergoes fragmentation. 
    • Bacteria undergo fission, and Yeast undergoes budding.


    So, the correct option is C.

  • Question 2
    1 / -0
    Which of the following perform reproduction in plants?
    Solution
    • Flowers perform the function of reproduction in plants and are the reproductive parts of a plant. For example, rose, papaya.
    • On the other hand, roots, stems, leaves, and buds are the vegetative parts of the plant but are also involved in reproduction known as vegetative propagation. For example- Bryophyllum, potato.
    • Plants like potatoes (Solanum tuberosum) reproduce by producing tubers. Tubers are modified stems that store starch. Tubers arise as swollen ends of stolons and contain many adventitious buds (eyes on potatoes). Each eye can grow to form an individual plant.

      So the correct option is "All of the above".
    • Question 3
      1 / -0
      Which part of the plant is involved in sexual reproduction?
      Solution
      • The flowers perform the function of sexual reproduction in plants. Flowers are known as the reproductive parts of a plant.
      • While the other parts such as stem, leaf, and root have no role in sexual reproduction and are known as vegetative parts of a plant.
      • Hence, Option B is correct.

    • Question 4
      1 / -0
      The production of a new individual from the parent is called 
      Solution
      Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from a single cell or from a multicellular organism, inherit the genes of their single parent.
      When two parents are involved in reproduction, the method is called sexual reproduction. The male and female gametes fuse during fertilization to produce the zygote. The zygote subsequently develops into an embryo which further develops into a new individual. 
      In either case, the new individual arises from the parent.
      So the correct option is "Reproduction".
    • Question 5
      1 / -0
      The process in which organisms break into pieces is called 
      Solution
      Fragmentation is the process in which the body of an organism breaks up into two or more pieces, which on maturing grows to form a completely new organism. Ex- Spirogyra, algae.

      So the correct option is "B- Fragmentation". 
    • Question 6
      1 / -0
      In which of the following modes of reproduction new plants are produced without seeds?
      Solution
      • Asexual reproduction produces plants that are genetically identical to the parent plant because no mixing of male and female gametes takes place
      • Vegetative reproduction is a type of asexual reproduction without the production of seeds or spores. Many types of roots exhibit vegetative reproduction.
      • While in sexual reproduction produces offspring by the fusion of gametes, resulting in offspring genetically different from the parent or parents. The zygote formed due to the fusion of gametes will develop to form an embryo that is protected in hard protective coverings of seed.

      Hence, option D is correct.
    • Question 7
      1 / -0
      In which of the following processes water is involved in the reproduction?
      Solution
      • When water and nutrients are available algae grow and multiply rapidly by fragmentation. 
      • An alga breaks up into two or more fragments. These fragments or pieces grow into new individuals. 
      • This process continues and they cover a large area in a short period of time.
      Option "C" is correct.
    • Question 8
      1 / -0
      The ovary of a flower contains small structures called:
      Solution
      • The ovules are small structures present in the ovary. The ovule contains the female gamete.
      • Pollen contains male gametes and is formed inside the anther.

      So, the correct option is B.
    • Question 9
      1 / -0
      The classification of the flowers as unisexual and bisexual is on the basis of:
      Solution
      • A flower typically consists of petals, sepals, stamen, and pistil (carpel). 
      • Stamen is the male reproductive part of a flower and the pistil is the female reproductive part of a flower. 
      • Some flowers may carry both stamen and pistil in the same flower and are called bisexual flowers (as both the sexes are present in the same flower) and some flowers may have separate male and female flowers and are called unisexual flowers. 
      • The male flower has only the stamen and no pistil while the female flower has only the pistil and no stamen.

      So, the correct answer is option C,
    • Question 10
      1 / -0
      ___________ is a life process that is not essential for an individual's survival but for survival of the species.
      Solution
      • Reproduction is a biological process in which an organism produces young ones (offspring) of the same kind. 
      • It is one of the most important characteristics of living organisms. 
      • An individual has a limited lifespan and lives for a defined time period but species survive and evolve for a much longer duration.
      • This process does not serve any other purpose than to multiply organisms, and it is not required for the energy production or growth of organisms. 
      • Thus an individual can survive without reproduction but a species may extinct. 
      So, the correct answer is option 'B'.
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