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Plant part roots
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Slide 1

The EXTERNAL Structure

The EXTERNAL Structure

of

PLANTS

Slide 2

External Structure of the Plant  Parts of the plant on the outside.

External Structure of the Plant Parts of the plant on the outside.

The Root

Types of Root Systems

Functions of the Root System

Specialized Root Systems

Slide 3

MAIN ROOT

MAIN ROOT

LATERAL

OR SIDE

ROOT

ROOT

SYSTEM

LEAF

STEM

FLOWER

FRUIT

NODE

NODE

NODE

INTER-

NODE

TERMINAL BUD

AXILLARY

BUD

SHOOT

SYSTEM

Slide 4

The Shoot System is found

The Shoot System is found

ground and the Root System

is found

ground.

ABOVE

BELOW or UNDER

Slide 5

Types of Root System

Types of Root System

Looks like a

tangled mass

of roots

Examples of plants

With this root

system are

Banana

Coconut

Rice

Corn

Sugar Cane

All Grasses

Slide 6

Tap Roots

Tap Roots

Have a large main

central root

Have many branching

roots

Go deep in the soil

Examples of plants :

Large trees e.g.

mango, avocado

Shrubs e.g. tomato,

peppers

Slide 7

Aerial Roots

Aerial Roots

Plant attaches itself to

tree branch or telephone wire

Roots hang down in mid-air and absorb water from rainfall

Examples :

Wild Pine

Some Orchids

Slide 8

Specialized Roots

Specialized Roots

STILT

ROOTS

e.g.

Mangrove

Slide 9

PROP

PROP

ROOTS

e.g.

Corn

Slide 10

ADVENTITIOUS Roots -

ADVENTITIOUS Roots -

Grow from unusual places on plants such as

- Stems, leaves and even fruits

Slide 11

Roots :

Roots :

Functions of Roots

- anchor plants firmly in the ground

- absorb water and minerals

from the soil

- of some plants,

can store starch

- of some plants can

be used to grow

a new plant

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