Germination (Vegetative Propagation) Mixed Quiz
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Germination (Vegetative Propagation) Mixed Quiz

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@ThrilledGyrolite

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Questions and Answers

What is the main advantage of a plantlet being attached to the parent plant?

  • It has less exposure to pests.
  • It can produce flowers sooner.
  • It requires less sunlight.
  • It receives nourishment for better establishment. (correct)

    • In grafting, the cambium layers of the scion and root stock must unite to form one plant.

    True

    What type of artificial propagation involves removing part of a shoot and placing it in soil or water to develop roots?

    Cuttings

    In layering, a cut shoot is _______ into soil to develop into a new plant.

    <p>pegged</p> Signup and view all the answers

    Match the type of artificial propagation with its description:

    <p>Cuttings = Part of the shoot is removed and placed in soil or water Layering = A cut shoot is pegged into soil Grafting = A shoot twig is attached to root stock Micropropagation = Individual cells are grown in tissue culture</p> Signup and view all the answers

    Which of the following is NOT a requirement for germination?

    <p>Light</p> Signup and view all the answers

    In hypogeal germination, the seed remains below the ground.

    <p>True</p> Signup and view all the answers

    What is the role of oxygen in the process of germination?

    <p>Used in aerobic respiration to provide energy.</p> Signup and view all the answers

    The ______ is the first part of the plant to emerge during germination.

    <p>radicle</p> Signup and view all the answers

    Which type of vegetative propagation involves swollen underground stems?

    <p>Stem Tubers</p> Signup and view all the answers

    Match the following plant propagation methods with their descriptions:

    <p>Stem Tubers = Swollen ends of underground stems Root Tubers = Swollen lateral roots storing food Bulbs = Underground swollen buds Plantlets = Miniature plants along leaf edges</p> Signup and view all the answers

    What is the main characteristic of asexual reproduction in plants?

    <p>Offspring are genetically identical to the parents.</p> Signup and view all the answers

    Bulbs can survive winter beneath the soil until the following year.

    <p>True</p> Signup and view all the answers

    Study Notes

    Germination

    • The process of a seed beginning to grow.
    • Requirements for germination:
      • Water: acts as a solvent for materials, allowing plant hormones and enzymes to function.
      • Oxygen: used in aerobic respiration for energy production.
      • Suitable temperature: for optimal enzyme activity.
      • Food: from the seed's food reserve, providing energy and materials for new plant tissues.
    • Stages of germination:
      • Radicle emerges: forms the root, growing downwards.
      • Plumule emerges: forms the shoot, growing upwards. Plant loses weight.
      • Leaves break the surface: seedling begins photosynthesis, producing glucose for growth and new tissue. Plant gains weight.
      • Hypogeal germination: seed stays underground.
      • Epigeal germination: seed is carried above the ground.

    Asexual Reproduction

    • Reproduction without gametes, producing genetically identical offspring.
    • Vegetative propagation: cloning plants.

    Natural Propagation

    • Stem tubers: e.g., potatoes.
      • Swollen underground stems.
      • Axillary buds produce new shoots and roots, using stored food.
      • Parent tuber eventually dies.
    • Root tubers: e.g., sweet potatoes.
      • Swollen lateral roots, storing food and acting as perennating organs.
      • Allows the plant to survive over multiple seasons.
    • Bulbs: e.g., daffodils.
      • Underground swollen buds.
      • Terminal and axillary buds enclosed in food-rich leaf bases.
      • Axillary buds can grow, producing foliage leaves and roots, eventually forming independent plants.
    • Plantlets: e.g., strawberry plants.
      • Miniature plants forming along leaf edges.
      • Have roots that grow into the ground, establishing a new plant.
      • Modified stems called runners grow over the ground, with plantlets at their ends.
      • Runners provide initial nourishment to the plantlet.
      • When established, the runner withers, and the new plant becomes independent.

    Artificial Propagation

    • Cuttings: e.g., geraniums.
      • A shoot portion is placed in soil or water to form roots.
      • Rooting powder can accelerate root development.
    • Layering: e.g., blackberries.
      • A cut shoot is anchored in soil, developing into a new plant.
      • Adventitious roots form, and the new plant is then separated from the parent.
    • Grafting: e.g., apples.
      • A shoot twig (scion) is attached to a rootstock.
      • Cambium layers unite, forming a single plant.
    • Micropropagation: e.g., bananas.
      • Individual cells (stem, root, or leaf) are grown in tissue culture.
      • Used for houseplants and commercial crops.

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    Description

    Explore the essential processes of seed germination and asexual reproduction in plants. This quiz covers the requirements for germination, stages involved, and vegetative propagation techniques. Test your knowledge on how plants grow and reproduce without the fusion of gametes.

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