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  • Free carpels are calledOption: 1 ApocarpousOption: 2 Polycarpous<div class='q

Free carpels are called

Option: 1

Apocarpous


Option: 2

Polycarpous


Option: 3

Syncarpous


Option: 4

Gamocarpous


Answers (1)

best_answer

 

 

Parts of a Flower - Gynoecium -

Parts of a Flower - Gynoecium

  • Gynoecium is the female reproductive whorl of the flower.
  • It is made up of one or more carpels/pistils/megasporophyll.
  • A carpel consists of stigma, style and ovary.
  • Ovary is the enlarged basal part on which the elongated tube called style is present.
  • The style connects the ovary to the stigma.
  • The stigma present at the tip is receptive surface for the pollen grains.
  • Ovary contains one or more ovules attached to a flattened cushion-like placenta. 
  • When more than one one carpels are present and they are free, the condition is called apocarpous, e.g., lotus and rose.
  • When more than one carpels are present and they are fused, the condition is called syncarpous, e.g., mustard and tomato.
  1. Monocarpellary : It is a gynoecium with a single carpel, e.g., Bean.
  2. Bicarpellary : It is the presence of two carpels in a gynoecium. e.g., Helianthus.
  3. Tricarpellary : It is the presence of three carpels in a gynoecium e.g., Cocos.
  4. Tetracarpellary : It is the presence of four carpels in a gynoecium. e.g., Cotton.
  5. Pentacarpellary : It is the presence of five carpels in a gynoecium. e.g., Hibiscus.
  6. Multicarpellary : It is the presence of many carpels in a gynoecium. e.g., Annona.

Locules in the Ovary:

  • The ovary encloses one to many chambers called the locules. Based on the number of locules, the ovary may be described as follows :
  1. Unilocular : Ovary with one locule. e.g., Dolichos.
  2. Bilocular : Ovary with two locules. e.g., Solanum.
  3. Trilocular : Ovary with three locules. e.g., Allium.
  4. Tetralocular : Ovary with four locules. e.g., Datura.
  5. Pentalocular : Ovary with five locules. e.g., Hibiscus.
  6. Multilocular : Ovary with many locules. e.g., Abutilon.-

 

 

When more than one one carpels are present and they are free, the condition is called apocarpous.

 

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Deependra Verma

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