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प्रश्न
Sunflower is not a flower. Explain.
उत्तर
Sunflowers are a group of flowers, not a single flower. In actuality, what looks to be a single flower is actually an inflorescence, which is a group or bunch of very small blooms. These flowers are arranged in a unique way on a receptacle. The capitulum is the name for this form of inflorescence. The following are the main characteristics of a capitulum.
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The receptacle has been flattened.
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On the receptacle, there are several tiny, sessile florets.
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The florets that are the newest are in the centre, whereas those that are the oldest are in the periphery.
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Sunflower florets are divided into two types: ray florets and disc florets.
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The receptacle's rim is covered in ray florets. These have a yellow colour to them.
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The disc florets are located in the centre. They are actinomorphic and bisexual.
A sunflower is an inflorescence, not a flower, as evidenced by the characteristics listed above.
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संबंधित प्रश्न
Define the following term:
Actinomorphic
Define the following term:
Zygomorphic
What is a flower?
Describe the parts of a typical angiosperm flower.
Give the technical term for the following
A sterile stamen
Give the technical term for the following
Stamens are attached to the petals
When gynoecium is present above all parts of the flower this condition is called ______.
Given below are floral formulae of some plants. Draw floral diagrams from these formulae.
(i) \[\ce{⊕ ⚥ K_{(5)}, C_{(5)}, A_{(5)}, G_{(2)}}\]
(ii) \[\ce{Φ ⚥ K_{(5)} C_{1+2+(2)} A_{(9)+1} G_{\underline1}}\]
(iii) \[\ce{⊕ ⚥ K_{5} C_{5} A_{5+5} G_{(5)}}\]
Differentiate between pedicel and peduncle
Differentiate between stamen and staminoid
