The correct answer is option 3: localised growth. Plants differ from animals in the way they grow and develop. While both plants and animals undergo metabolism, which is the process of converting food into energy, this is not unique to plants. Option 1, locomotion, refers to the ability to move from one place to another, and plants typically do not have this ability. Option 4, catabolism, refers to the breakdown of molecules for energy, which is a part of metabolism and not specific to plants. However, option 3, localised growth, is a characteristic that distinguishes plants from animals. Plants have the ability to grow in specific areas or regions, such as the roots growing into the soil and stems growing upwards towards sunlight. This localised growth allows plants to adapt to their environment and reach for resources like sunlight and nutrients.