12 Answers - Do all plants use photosynthesis? - Quora
Do all plants use photosynthesis
When birds began to fly, their energy requirements skyrocketed. Today’s bats, for instance, and , just as birds live far longer than similarly sized mammals. Mammalian life-expectancy in which size, metabolism, and longevity are all closely related. The general rule is that all mammals have about the same number of heartbeats in a lifetime. A mouse’s heart beats about 20 times as fast as an elephant’s, and an elephant lives about 20 times as long as a mouse. Larger bodies mean slower metabolisms, or less energy burned per unit of time per cell. Birds have the same kind of size/metabolism/life-expectancy curve, but it sits on a higher level than mammals'. A pigeon lives for about 35 years, or 10 times as long as a similarly sized rat. On average, birds live three-to-four times as long as similarly sized mammals.
Lichens typically do use photosynthesis
Because of the stupendous energy demands of flight, birds not only have the superior air sac system for breathing, but their , the cell’s energy-generation centers, are far more efficient than mammalian mitochondria. Parrots in captivity can , scientists have noted an , and scientists may discover that wild albatrosses live to be 100 or more, when their tagging programs get that old. The may explain bird longevity, as the efficient mitochondria of birds . The theory is controversial and will be for many years, but I think that an engine analogy can help. A bird is a piece of high-performance biological technology, and when operating at peak output it puts all land-bound animals to shame. But a bird’s metabolism is usually in its slack state, only maximized during flight. Simply put, a bird has a great energy capacity that is rarely used to its fullest. It is like a high-performance engine that rarely runs near its . Such engines will last far longer than those regularly running near redline. High-performance technology that usually “loafs” in its slack state and is rarely taxed is expensive and long-lasting. The increased investment in superior technology allows for high performance and long life. High-quality technology is more economical in the long run, if the initial investment can be afforded.