define different types of placentation in plants - Botany -

Question

define different types of placentation in plants?

Meetu Misra · Accepted Answer

Dear Student,
Placentation is the arrangements of ovules within the ovary of
the flowers Based on the arrangement pattern, the flowers are
classifies as marginal, axile, parietal, free central and basal

The different types of placentation found in plants are

Marginal placentation: The placenta forms a
ridge along the ventral suture of the ovary and the ovules are
borne on the ridge Example: Peas
Axile placentation: The placenta is axial
and the ovules are attached to the multilocular ovary Example:
China rose, lemon and orange
Parietal placentation: In this type of
placentation, the ovules develop on the inner wall of the ovary
Ovary has a single chamber but appears to be double-chambered
because of the formation of a false septum Example: Mustard and
argemone
Free central placentation: The ovules are
borne on the central axis The septum is absent in this type of
placentation Example: Dianthus and primrose
Basal placentation: In this type of
placentation, the placenta is situated at the base of the ovary and
a single ovule is attached to it Example: Sunflower

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/userimages/mn_images/image/Placentation(1)%20png"
style="width: 344px; height: 235px">
Hope this answers your question
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