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  • The whorl of bracts present below the inflorescence of sunflower is called Option: 1  Involucre 

The whorl of bracts present below the inflorescence of sunflower is called 

Option: 1

 Involucre 


Option: 2

 Spathe 


Option: 3

 Involucel 


Option: 4

 Stipule 


Answers (1)

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Racemose Inflorescence and Its Types - Category B and C

Category C: Main Axis Flattened

Racemose Capitulum or Racemose Head:

  • The main axis is flattened.
  • It appears like a flat disc and is called a receptacle.
  • A large number of sessile flowers are borne on the receptacle in a centripetal succession.
  • Whorl of bracts called involucre is present.
  • This inflorescence is an evolved form of umbel inflorescence.
  • The individual flowers in the capitulum are called florets.
  • The peripheral florets are called ray florets.
  • The central florets are called disc florets.
  • For example, Sunflower.
    whorl of bracts is called an involucre. 

 

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