Archive
8th of March 2017
Biology
Q:

Cut a transverse section of a carpel of any flower in your garden.Observe the section of ovary under microscope.How would you identify it to be monocarpellary or multicarpellary?

Vikas Mahajan - CBSE - Class XI Science

Wednesday, March 08, 2017 at 17:42:PM

A:

Hi Vikas,

A flower is monocarpellary if it has a single carpel and multicarpellary if it has more than one carpel.

When you cut the transverse section of the carpel and observe the section of ovary, look for the chamber or locules in the ovary and the number, distribution and arrangement of placenta in the ovary.

  • If the ovary is unilocular with marginal placentation, then the gynoecium would be monocarpellary.
  • If the ovary is multilocular with parietal or superficial placentation, then the gynoecium would be multicarpellary.

You will not observe marginal placentation in case of multicarpellary gynoecium.

Wednesday, March 08, 2017 at 18:33:PM