An organism’s fitness is measured by how strong and fast it is.?

Marcelle Vanlith: False, it is the measurement of that organism's genotype to be reproduced. If that be through being faster and stronger than its competition then that would be a measurement of that species' fitness, but fitness isn't contained in just being fast or strong. Sloths survive through slow movements which attract little attention and allow camoflauging bacteria to cover it's body. This will enable its genes to be passed on. Fitness is how successful the organism is at passing its genes to the next generation....Show more

Bryan Avinger: false.Turtles, slugs, and jellyfish are neither strong nor fast, yet they have survived for millenniums in their respective environments.Strength comes at the cost of increased energy consumption. Even if you don't move all day, your muscles still consume roughly 1/4 of your total energy expenditure. A muscle-bound creature starves in times of famine.Speed is a widely desired trait in the animal world (more so than streng! th perhaps), as it is the method most often used to avoid predators or catch prey. However, not all creatures use speed to survive. Spiders, sloths, porcupines, chameleons, and crocodiles come to mind....Show more

Tijuana Tatsak: False.'Fitness' depends entirely on envirnoment. Strength and speed are advantageous in most circumstances, true, but not to all creatures. To a mouse-sized animal with dog-sized predators, the ability to hide is probably more important than either. Strength can be a disadvantage in, say, a cramped environment if it requires so much mass that it's difficult to move around or alerts prey to its approach. In a wide-open environment with few hiding-places, endurance- ie, the ability to keep moving for a long time without burning too much energy- may be more important than top speed in outrunning predators. Effective defense mechanisms like poison can obviate the need for either. Most plants have neither 'strenght' nor 'speed' of that kind ! at all. And so on, and so forth. The only measure of fitness! is how well the organism's traits allow it to survive and reproduce....Show more

Lulu Bukowiecki: false - not necessarily it depends on what is required for the organism to be "fit"although strong and fast is usually favorable - fitness does not depend on it. ex: something is strong and fast, but then the enviroment gets cold, it doesen't have a way to survive, and something slower that can withstand the cold survives. - the slower is more fit (not because it's slow but because it can live in the cold)...Show more

Roselee Mczeal: Sure, but it could also be how slow and how well camouflaged it is or how well it can squirm through reeds.The characteristic must meet the demands of the environment.