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11th botany Chapter4


8. Explain the different types of placentation with example.



Marginal

The placentae along the margin of a unicarpellate ovary.
Eg: Fabaceae.

Superficial

Ovules arise from the surface of the septa.
Eg: Nymphaeaceae

Free-central

The placentae along the column in a compound ovary without septa. 
Eg: Caryophyllaceae, Dianthus, Primerose

Axile

The placentae arises from the column in a compound ovary with septa.
Eg: Hibiscus, Tomato, Lemon

Parietal

It is the placentae on the ovary walls or upon intruding partitions of a unilocular, compound Ovary.
Eg: Mustard, Argemone, Cucumber

Basal

The placenta at the base of the ovary.
Eg: Sunflower (Asteraceae) Marigold

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9. Differenciate between aggregate fruit with multiple fruit



 Aggregate fruits Multiple fruits
 It is formed from a single flower with apocarpous pistil. Each free carpel develops into a fruitlet It is formed from whole inflorescence along with its Peduncle.
 It is a group of etaerio of fruitlets Many fruitlets form a composite fruit.
 It can be compact (Annona) or loose (Polyalthia) It is compact
 Eg. Annona, Polyalthia Eg: Pineapple, Jack fruit, Ficus

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10. Explain the different types of fleshy fruit with suitable example.

Fruit classification 
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