UNICELLULAR AND MULTICELLULAR ORGANISMS.

UNICELLULAR ORGANISMS

• Uni means one• Consists of only one cell, very tiny.• Can only be seen under microscope.• Live in water or wet place.– Wells, seas,rivers and drains.

• Have different body shapes.• Carry out all the life process – Respire, eat, excrete, reproduce and move.

Examples:

• Parameciums

Amoeba

Euglena

Chlamydomonas

Yeast Cell

MULTICELLULAR ORGANISMS

• Multi means many.• Made up of many cell.• Include grass, trees, fish and birds.• Hydra and Spirogyra simple multicellular

organisms.

Spirogyra

• Simple multicellular plant.

• Shaped like cylinder.• Join together to form

long filament• Green in color (because

it has chlorophyll)• Can make its own food.

Spirogyra

Hydra

• Multicellular animal.• Cylindrical in shape.• Attaches itself to water

plants.