explain the structure of a flower with ahelpof a labelld digram
Answers
A flower is the reproductive structure found in flowering plants. A typical flower contains the following parts:
(1) Stalk- The part by which a flower is attached to the branch is called stalk.
(2) Sepals- The small, green colored, leaf shaped structures found on the outermost part of the flower are called sepals. They are considered to be modified leaves. They protect the flower when they are in the stage of bud and support the petals when in bloom.
(3) Petals- Petals are colored, modified leaves that surround the reproductive parts of flowers. They are brightly colored or unusually shaped to attract insects for pollination.
(4) Stamen- Stamen is the pollen- producing, male reproductive organ of a flower. Stamen usually consists of a long slender stalk, the filament, with the anthers at the tip.
(5) Pistil - Pistil is the ovule producing, female reproductive part of a flower. It is the innermost part of a flower. The pistil consists of three parts: stigma, style, ovary.
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Answer:
1). A typical flower consists of an outer whorl of green sepals (calyx) which protects the parts within.
2) The second whorl has petals (corolla) which are usually brightly coloured. They sometimes have fragrance also.
3) Petals are soft and are useful to attract insects to facilitate cross pollination.
4) The third whorl of the flower consists of stamens (Androecium) which are the male reproductive organs.
5) Each stamen is made up of a filament and an anther.
6) Each anther usually has two anther lobes. The anther produces pollen grains (microspores). •
7) The inner most fourth whorl is gynoecium or pistil. It consists of ovary, style and stigma.
8) Ovary occupies central portion on the thalamus. A swollen ovary is present on the
thalamus.
9) Inside the ovary future seeds, known as ovules are present.1
10) Ovary has a pipe like extension called style. The tip of the style ends in stigma. The stigma receive the pollen grains.
Explanation:
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