write a function of a flower parts
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Answers
Answer:
Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
Explanation:
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Answer:
1.. Sepals (Calyx): These are small leaf-like green structures that form the outer whorl of the flower. They act as a supporting system to the floral part. Sepal can be located at the base near the stalk..
2.. Petals (Corolla): These are flat, colourful, generally large parts that form the second whorl inside the sepals. Petals usually have a great aroma or fragrance which attracts insects or other vectors for pollination..
3.. Androecium: Stamens are the male reproductive organs in plants that collectively form the androecium. These are present inside the petals and form the third whorl. Stamens have two parts, the slender stalk called a filament, and anther is the fertile part present at the tip of the filament. These parts are connected by a sterile band called connective..
4. Gynoecium: Carpel (also known as Pistil) is the female reproductive part in plants and collectively forms the gynoecium. These are the fourth and the innermost whorl of a flower. Based on the number of carpels, flowers are classified into three types, namely monocarpellary, bicarpellary and polycarpellary. Carpel has basically 3 parts:
a) Stigma: Stigma is the uppermost sticky receptive part of the carpel that is exposed to the external environment to receive pollen grains from the anther of a stamen..
b) Style: It is the stalk that connects Stigma with the ovary..
c) Ovary: It is the swollen structure of the carpel that has parenchymatous cushions called placenta in its chambers..
Ovules are attached to the placenta and contain the female gametes or female sex cells of the plant. There is usually more than one ovule in the ovary..
Ovule has one or two layers of covering called integuments with a terminal pore called the micropyle. Each ovule contains only one female gamete of the plant, the one present inside the ovule is called ovum or egg..
During pollination, pollen grains fall on the stigma of the flower and start to germinate. This process is followed by fertilisation that results in the development of the ovary into fruits and ovules into seeds...