MCQ IN MEDICINE

Detailed explanation-1: -Leaf cuticle-Leaves are covered with a waxy cuticle which also stops their cells from becoming infected. It is a strong barrier that pathogens find it hard to pass through.

Detailed explanation-2: -Physical defenses are a first line of protection for many plants. These defenses make it difficult for herbivores to eat plants. Examples of physical defenses are thorns on roses and spikes on trees like hawthorn. These physical defenses hurt the herbivores and stop them from eating plants’ stems or leaves.

Detailed explanation-3: -The cuticle is a barrier coating the outer surface of epidermal cells of organs of the aerial parts of the plants. It protects against water loss, various abiotic and biotic stress.

Detailed explanation-4: -The plant cuticle is an extracellular hydrophobic layer that covers the aerial epidermis of all land plants, providing protection against desiccation and external environmental stresses.

Detailed explanation-5: -Although lacking an immune system comparable to animals, plants have developed a stunning array of structural, chemical, and protein-based defenses designed to detect invading organisms and stop them before they are able to cause extensive damage.