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Monday, 5 June 2017

The terms Introse and Extrose are related to

  By GK Planet Team       Monday, 5 June 2017

Introse and Extrose

The terms introse and extrose are related to
  1. presence of stamen inward or outward to the whorl of petals
  2. the face of anther towards or opposite the center of the flower
  3. the position of anther below or above the ovary
  4. the position of anther below or above the stigma
Answer: The face of anther towards or opposite the center of the flower

Introse and Extrose Anthers in Plants

The anther wall breaks at a specific site. Usually this site is observed as an indentation between the locules of each theca and runs the length of the anther, but in species with poricidal anther dehiscence it is instead a small pore. If the pollen is released from the anther through a split on the outer side (relative to the center of the flower), this is extrorse dehiscence, and if the pollen is released from the inner side, this is introrse dehiscence. If the pollen is released through a split that is positioned to the side, towards other anthers, rather than towards the inside or outside of the flower, this is latrorse dehiscence.
Anthers which have their face towards the pheriphery of the flower is called extrose anthers.
While if the face of anther lies towards centre of the flower, it is known as introse anther.
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