Virus Chart, Botany, School Education

Quick Answer: The Virus Chart is a printed botany wall chart that explains what viruses are, with labelled diagrams of virus structure of the kind taught in school biology, such as the tobacco mosaic virus and a bacteriophage. Teachers use it for lessons on microbes and plant disease.

Why a Virus Chart Sits in the Botany Series

Viruses are not plants, yet school syllabi have long introduced them in botany beside bacteria, algae and fungi, because two famous examples come from plant science. The tobacco mosaic virus (TMV) was the first virus to be identified, from the mottled leaves of infected tobacco, and its rod-shaped particle, a spiral of protein units wrapped around a single strand of RNA, is a staple of textbook diagrams. A virus chart in this series therefore typically pairs TMV with other forms so that students can compare shapes.

The second classic figure is the bacteriophage, a virus that infects bacteria. Its drawing shows a polyhedral head holding DNA, a hollow tail sheath, a base plate and tail fibres that grip the bacterial wall. Charts often follow it through the lytic cycle: attachment, injection of DNA, manufacture of new viral parts inside the host, assembly, and bursting of the cell. Some versions add an enveloped animal virus for contrast.

What makes this topic hard for students is scale and status. Viruses are far smaller than bacteria, are imaged only with electron microscopes, and cannot reproduce outside a living cell, which is why biologists debate whether to call them alive. A labelled chart gives the class a shared picture to argue from. Panels vary between editions, so compare them with the virus topics in your syllabus.

Specifications

Applications

• Introducing viruses after the bacteria topic, contrasting a non-cellular particle with a prokaryotic cell
• Explaining leaf mosaic, curling and stunting as symptoms of viral disease in crop plants
• Sequencing the stages of bacteriophage multiplication before a written test
• Supporting discussion on why antibiotics do not act on viruses

Care & Handling

• Mount the virus chart next to the bacteria and fungi charts so the microbe unit reads as one wall.
• Hold the corners with clips or a hanging rail; adhesive tape tends to lift the print when removed.
• When the unit ends, roll the sheet printed side out around a tube so it does not curl away from the wall next time.

Why Choose LabEquip

Biology teachers building a microbiology wall usually order this chart with the Bacteria Chart from the same botany series. Both sit in the Educational Charts range, and a department list covering several titles can be sent through the LabEquip contact page.

Frequently Asked Questions

Are viruses living or non-living?

They sit on the boundary. Outside a host cell a virus is an inert particle with no metabolism, but inside a living cell it takes over the cell’s machinery to make copies of itself. Most school syllabi describe viruses as a link between living and non-living matter.

Why is the tobacco mosaic virus shown on a botany chart?

TMV infects tobacco and related plants, causing a mottled mosaic pattern on the leaves, and it was the first virus ever identified. Its simple rod of protein around RNA makes it the standard plant virus for teaching.

What is the difference between a virus and a bacterium?

A bacterium is a complete single cell with a cell wall, cytoplasm, ribosomes and its own metabolism. A virus has no cell structure: it is nucleic acid, either DNA or RNA, inside a protein coat, and it can multiply only inside a host.

What happens in the lytic cycle of a bacteriophage?

The phage attaches to the bacterium with its tail fibres and injects its DNA. The host cell then makes viral DNA and proteins, these assemble into new phages, and the cell bursts to release them.

Can students see a virus with a school microscope?

No. Most viruses are smaller than the finest detail a light microscope can resolve, so they are imaged with electron microscopes. The chart’s drawings are based on such images, which is exactly why a wall chart is useful for this topic.

Why don’t antibiotics cure viral infections?

Antibiotics target structures and processes that belong to bacteria, such as cell walls and bacterial ribosomes. Viruses have none of these, so the drugs have nothing to act on. Viral diseases are prevented with vaccines or treated with antiviral medicines.

Last Updated: September 2026