Explain the different types of placentation with example.

1.	Explain the different types of placentation with example.
Answer» The different types of placentation with example: 1. Marginal: It is with the placentae along the margin of a unicarpellate ovary. Example: Fabaceae. 2. Axile: The placentae arises from the column in a compound ovary with septa. Example: Hibiscus, tomato and lemon. 3. Superficial: Ovules arise from the surface of the septa. Example: Nymphaeceae. 4. Parietal: It is the placentae on the ovary walls or upon intruding partitions of a unilocular, compound ovary. Example: Mustard, argemone and cucumber. 5. Free – central: It is with the placentae along the column in a compound ovary without septa. Example: Caryophyllaceae, Dianthus and primrose. 6. Basal: It is the placenta at the base of the ovary. Example: Sunflower (Asteraceae) Marigold.

Answer»

The different types of placentation with example:

1. Marginal: It is with the placentae along the margin of a unicarpellate ovary.

Example: Fabaceae.

2. Axile: The placentae arises from the column in a compound ovary with septa.

Example: Hibiscus, tomato and lemon.

3. Superficial: Ovules arise from the surface of the septa.

Example: Nymphaeceae.

4. Parietal: It is the placentae on the ovary walls or upon intruding partitions of a unilocular, compound ovary.

Example: Mustard, argemone and cucumber.

5. Free – central: It is with the placentae along the column in a compound ovary without septa.

Example: Caryophyllaceae, Dianthus and primrose.

6. Basal: It is the placenta at the base of the ovary.

Example: Sunflower (Asteraceae) Marigold.

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