Plant part roots

Page
1

Slide 1

The EXTERNAL Structure

of

PLANTS

Slide 2

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

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

ground and the Root System

is found

ground.

ABOVE

BELOW or UNDER

Slide 5

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

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

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

STILT

ROOTS

e.g.

Mangrove

Slide 9

PROP

ROOTS

e.g.

Corn

Slide 10

ADVENTITIOUS Roots -

Grow from unusual places on plants such as

- Stems, leaves and even fruits

Slide 11

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