Q.34. Give functions of the following parts in flower?
(a) Anther (b) ovary (c) Pollen tube (d) petals(e)sepals
Answers
Answer:
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Answer:
Explanation:
Anthers: It is the head of the stamen and is responsible for producing the pollen which is transferred to the pistil or female parts of the same or another flower to bring about fertilization.
Ovary – They form the base of the pistil. The ovary holds the ovules.
In angiosperms, the pollen tube is siphonogamous and its main function is to carry the male gametes for double fertilization. In some taxa, as in Cucurbitaceae, the tube branches after entering the ovule, prior to fertilization. The tube may even swell and form a bulla. During post-fertilization development of the ovule, a portion of the tube may persist in the micropyle, or in the embryo sac, or in both, sometimes even in the micropyle of the mature seed. Haustorial function has been presumed in a number of taxa.
Petals: This layer lies just above the sepal layer. They are often bright in colour as their main function is to attract pollinators such as insects, butterflies etc to the flower. The petals are collectively known as the corolla.
Sepals: These are the small, leaf-like parts growing at the base of the petals. They form the outermost whorl of the flower. Collectively, sepals are known as the calyx. The main function of the calyx and its sepals is to protect the flower before it blossoms(in the bud stage).