Final answer:
Other organisms, including plants and other animals, have systems that are well adapted to their environments and function effectively for their survival. While different from the human body's organ systems, these systems are specialized to their ecological niches and thus 'function as well' in their own contexts.
Step-by-step explanation:
The human body is often compared to a highly sophisticated machine, consisting of various organ systems that work together to perform functions vital for life. This is similar to complex machines like drills and washing machines, where each part works towards a common goal. In the context of other organisms, such as plants and animals, they too have systems that function efficiently within their ecological niche. For example, the circulatory system of humans is specialized to transport nutrients and remove wastes, and while plants do not have such a system, they have vascular tissues like xylem and phloem to perform comparable functions of transport.
Plants also exhibit complex behaviors and responses to the environment through chemical control mechanisms, much like the nervous and endocrine systems in animals. These systems aid in the detection of environmental changes and facilitate appropriate responses, ensuring survival and adaptation through natural selection. Whether systems of other organisms function 'as well as' the human body can be more accurately framed regarding how well they function within their specific environmental contexts. Each organism's systems are well-adapted to their particular way of life.