One of the similarities between the defence mechanisms of a plant and an animal includes the A - VCE - SSCE Biology - Question 3 - 2010 - Paper 1

Both plants and animals utilize protective barriers to defend against pathogens. In plants, the epidermal layer acts as a physical barrier that prevents pathogens from invading. Similarly, animals have skin which serves the same purpose. This shared defense mechanism highlights a fundamental similarity in their approaches to protect against infectious agents.