Question

Recognise the figure and find out the correct matching.

Diagram

• A. a—viral colony, b—fungal colony
  
• B. a—bacterial colony, b—viral colony
  
• C. a—fungal colony, b—bacterial colony
• D. a—bacterial colony, b—fungal colony

Answer 1

The correct option is D a—bacterial colony, b—fungal colony

Bacterial colonies :
Bacteria are grown in the lab using nutrient media in petri dishes or tubes. The multiplication of bacteria results in the formation of colonies that usually have circular, well-defined margins, shiny or mucoid surfaces. These colonies are usually counted for estimation of the numbers. Hence, the figure shown in (a) is a bacterial colony.

Fungal colonies :
Fungal colonies are large, diffuse and usually bear a cottony appearance due to hyphae. Hence, the figure shown in (b) is a fungal colony.

Viral growth :
Viruses cannot grow on nutrient media as they require living cells to propagate. They grow inside the living systems.