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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Which of the following plants does not grow from seeds?

    Question: Which of the following plants does not grow from seeds?

    Options:

    Pea
    Cauliflower
    Tomato
    Potato

    🔑 Key Points
    🥔 Potato Growth and Structure:
    → In potatoes, the underground portion is a modified stem.
    → It stores reserve food and has all characteristics of a stem, such as roots and shoots appearing from it, and it has buds (eyes).
    → Potato is a tuber (the green part seen in young potatoes carries out photosynthesis).
    → It is called a modified stem as it has scaly leaves, nodes, internodes, and adventitious roots, characteristic of stems.
    → Potato tuber bears buds in small pits known as eyes.
    → Buds develop into branches, and some branches become green, erect, and leafy stems that grow horizontally underground.

    📝 Additional Information
    → The first step in the process of plant growth is seed germination.
    → The seed germinates when favorable conditions for growth exist in the environment.
    → In the absence of such favorable conditions, the seeds do not germinate and go into a period of suspended growth or rest.
    → Once favorable conditions return, the seeds resume metabolic activities, and growth takes place.
    → The root system begins its development from the embryonic root, also called the radicle, which grows out of the seed after the seed has absorbed water.
    → This is the primary root of a new plant.
    → The tip of the root is covered by a mass of loose cells called the root cap.

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