Cell differentiation

Animals and plants produced by sexual reproduction begin life as a single cell – a fertilisedegg or zygote.

This cell must divide to produce a multicellular organism. It must also differentiate so that its cells develop features that enable them to fulfil specific roles.

Specialised cells in animals

Cells of the…Specialised to… Circulatory system Transport substances, defend the body, regulate temperature Excretory system Remove waste products and unwanted substances, regulate the water content of the body Muscular system Bring about movement Nervous system Respond to internal and external stimuli and conditions, carry messages for the…