Flower Fruit and Seed


 
 
Concept Explanation
 

Flower Fruit and Seed

Seed Formation: After Fertilisation, the zygote grows to become an embryo. The embryo develops into a seed ( mature ovule) while the surrounding ovary develops into a fruit. The embryo consists of a plumule, radicle and an embryonic axis to which two fleshy cotyledons are attached. The cotyledons store food for the embryo. Seeds are attached to the fruits by a stalk. The stalk on maturity becomes detached and leaves a scar called hilum. Seeds are covered by a protective layer called the seed coat. When a seed gets suitable temperature, air and water, it germinates and grows into a new plant. This process is called germination. The plumule develops into the shoot system whereas the radicle grows as the root system. 

Fruit Formation: The ovary grows into a fruit. The fruit is actually a ripened and mature ovary, generally sweet, juicy or pulpy. It encloses seeds. Some fruits are fleshy and juicy such as mango, apple, peach, orange, etc. Almonds and walnuts have hard and woody shell of nuts. These are the examples of hard fruits or dry fruits. After fertilization the ovary enlarge to from the fruit.

  • The wall of the ovary becomes the fruit wall.
  • The ovules become seeds.
  • A fruit may have one or more seeds.
  • Petals sepals and other parts of the flower dry up and fall off.
  • The fruit is the seed bearing part of the ripened ovary of the flower plant.
  • The seed is the ripened ovule which contains an embryo and is covered  by a protective coat.
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    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Androecium is which part of the flower?

    Right Option : B
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    Question : 2

    Match the column:

    P. The innermost part of the flower is called theX. Ovules
    Q. Small bead like structure inside the ovaryY. Stamens
    R. This part of flower has filament and antherZ. Pistil

    Which of these are correct?

    Right Option : D
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    Explanation
    Question : 3

    A pistil consists of _________________

    Right Option : D
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    Explanation
     
     


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