Specialised Cells

1P5: Friday 26th November

Specialised CellsNot all parts (cells) of a plant or animal are the same. Some are shaped differently to suit the jobs they do.

Plant e.g. Daffodil Animal e.g. Human

Specialised CellsDraw the following table.

Specialised cell Function Feature

Specialised Cells

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Red Blood Cell

• The function of a red blood cell is to CARRY OXYGEN around our body

• Its special feature is that it has shape that gives it a LARGE SURFACE AREA

• The bigger the surface area the more oxygen that it can carry

Specialised Cells

Red Blood Cell

Specialised Cells

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Nerve Cell• The function of a nerve cell is to carry NERVE

MESSAGES throughout the body• The special FEATURE a nerve cell has is its

LONG STRAND.

Specialised Cells

• Sperm Cell

•The function is to swim to the egg for FERTILISATION

•The special feature a sperm cell has is its TAIL

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS

Specialised Cells

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS

• White blood Cell• Its function is to FIGHT DISEASE• Its special feature is that it has chemicals inside it that

DIGEST GERMS

Specialised Cells

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS

• Leaf Cell

• The FUNCTION of a leaf cell is to MAKE FOOD

• The special FEATURE a leaf cell has is it contains GREEN CHLOROPHYLL

Specialised Cells

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Plant root cell

Feature: Root hairs provide a large surface area.

Function: To absorb water.

Specialised Cells

• Guard Cell

Feature: Sausage shaped

Function: To open and close small pores.

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS

Specialised Cells

• Water vessels

Feature: Long tubes with hoops or spirals to add strength

Function: To carry water up from roots.

DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS

Xylem cells

Specialised Cells

• Cells that do the same job are called

Tissue • Blood, • Skin, • Bone, • Muscle, • Nerves

Examples

Specialised Cells

Cell Function Feature

Red blood cell Carry oxygen Large surface area

Nerve Carry nerve messages Long strand

Sperm Swim to egg for fertilisation

Tail

White blood cell Fight disease Chemicals inside digest germs

Leaf Make food Contains green chlorophyll

Root Absorbs water Root hairs provide large surface area

Guard Opens and closes small pores

Sausage shaped

Water vessel Carry water from roots Long tubes with hoops and spirals to add strength