Recently, however, fossilized lizard footprints have been found that capture an individual specimen in the process of accelerating from a four-legged walk into a two-legged run. This find, the oldest of its kind, suggests that bipedalism helped the ancient lizard to evade predators and survive to successfully reproduce.
Which statement contains a fact from the article?
Result:
AI explanationShows the answer. Tap to open.
Option 1: "Bipedalism evolved in lizards before humans."
Explanation: The text states that new evidence indicates lizards may have been bipedal significantly earlier than humans, specifically 25 million years ago. This directly supports the statement that bipedalism evolved in lizards before humans, aligning with the main idea of the text regarding the timeline of bipedalism.
Option 2: "A two-legged stance is usually achieved following a four-legged one."
Explanation: While the text mentions that lizards transition from a four-legged walk to a two-legged run, it does not state that this is a usual or general pattern. Therefore, this option presents an assumption not supported by the text.
Option 3: "Many species of lizard run faster on two legs than on four."
Explanation: The text does not provide any information about the speed of lizards running on two legs compared to four. This statement introduces a comparison that is not mentioned in the text, making it an unsupported claim.
Option 4: "The majority of lizards can walk with a two-legged stance."
Explanation: The text states that there are currently fifty known species of lizard that use a two-legged gait, but it does not imply that the majority of lizards can do so. This option overgeneralizes the information provided in the text.
The rest of this explanation is for members. Sign in free to read why the other options are wrong, key words and tips.
Sign in to read the full explanation