Tobacco mosaic virus (TMV)

Definition

A widespread plant virus that causes a mosaic pattern of leaf discolouration and reduces plant growth by reducing photosynthesis.

Used by AQA

Specification 4.3.1.2 · Paper 1

This lesson compares two human viral diseases—measles and HIV infection—with a plant viral disease, tobacco mosaic virus (TMV).
Revise: Viral Diseases

1
When explaining TMV's effect, complete the chain: mosaic leaf discolouration → reduced photosynthesis → reduced plant growth.

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GCSE Biology · key term

A widespread plant virus that causes a mosaic pattern of leaf discolouration and reduces plant growth by reducing photosynthesis.

Used by AQA

Specification 4.3.1.2 · Paper 1

This lesson compares two human viral diseases—measles and HIV infection—with a plant viral disease, tobacco mosaic virus (TMV).
Revise: Viral Diseases

1
When explaining TMV's effect, complete the chain: mosaic leaf discolouration → reduced photosynthesis → reduced plant growth.

Create a free account to read GCSE Biology revision notes for your exam board and track your progress.