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Question

Cyathium inflorescence is found in

A
Croton
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B
Ficus
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C
Euphorbia
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D
Ricinus
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Solution

The correct option is C Euphorbia
Cyathium inflorescence is found in Euphorbia. A cyathium is one of the specialised pseudanthia forming the inflorescence of plants. A cyathium consists of:
  • Five (rarely four) bracteoles. These are small, united bracts, which form a cup-like involucre. Their upper tips are free and in the beginning cover the opening of the involucre .These alternate with
  • Five nectar glands, which are sometimes fused.
  • One extremely reduced female flower standing in the centre at the base of the involucre, consisting of an ovary on a short stem with pistil and
  • Five groups of extremely reduced male flowers, which each consist of a single anther on a stem.
    Therefore, the correct answer is option C.

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