Fruit structure - PowerPoint Presentation

Slide1

Fruit structure

Mrs. Kalicharan

Lesson 1

Unit: DiseaseSlide2

What are these?Slide3

Definition of fruit

A

fruit is a part of a flowering plant that derives from specific tissues of the flower, one or more ovaries, and in some cases accessory tissues. Fruits are the means by

which these plants disseminate seeds (fertilised ovules).Slide4

Fruits are found in

two

main

categories:

Dry fruits: fruits in this category can be further divided into fruit that split open and throw out their seeds e.g. flamboyant and

those that do not split e.g. sunflower or corn

Fleshy fruits: these include all the brightly coloured and juicy fruits which attract animals. E.g. mangoes, orangesSlide5

Labelled parts of a fruitSlide6

Labelled parts of a fruitSlide7

Parts of a fruit (pericarp)

The pericarp is typically made up of three distinct layers

:

1. the epicarp/ exocarp,

which is the outermost layer;

2. the mesocarp, which is the middle layer; and

3. the endocarp, which is the inner layer surrounding the

ovary or the seeds. Slide8

Parts of a fruit (pericarp)

Epicarp

-

is the outermost layer of the pericarp. The epicarp forms the tough outer skin of the fruit, if there is one.

Mesocarp- is the fleshy middle layer of the pericarp of a fruit; it is found between the

epicarp and the endocarp. It is usually the part of the fruit that is eaten.Endocarp-

is the inside layer of the pericarp, which directly surrounds the seeds. It may be membranous as in citrus where it is the only part consumed.