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Explain the following types of placentation Marginal

Explain the following types of placentation
Marginal

Answers

Eric
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-placenta appears as one ridge on ovary wall
- ovules are attached to placenta in rows e.g. peas in a pod
Basal


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placenta formed at the base of the ovary with numerous ovules attached to it
Parietal
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edges of carpels fuse together
- dividing walls disappear, leaving one loculus
- have numerous seeds e.g. passion fruit
- placenta of each carpel appears as ridges on ovary wall
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edges of carpels fuse together to form a single central placenta
- numerous ovules arranged on placenta
- ovary divided into a number of loculi by walls of the carpel e.g.

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-edges of carpels fuse together
- dividing was disappears leaving one loculus
- placenta appears at base of ovary-? has numerous ovules



ericmunguti answered the question on October 5, 2018 at 11:07

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