Which anatomical feature is NOT associated with suspensory locomotion?

Question

BlackTom AI · Accepted Answer

To tackle this question, I’ll evaluate what suspensory locomotion typically involves in primates and which anatomical features support or hinder it.
Option 1: long fingers. In suspensory locomotion, especially among apes that hang and swing from branches, having elongated fingers helps grasp and支 hold branches securely. Therefore, this feature is commonly associated with suspensory movement.
Option 2: long trunk (spine). A long trunk or spine generally reduces stability when hanging and maneuvering beneath branches, making it less advantageous for sustained suspension. This characteristic is not typically linked to suspensory locomotion and can even be a drawback, suggesting this option is not associated.
Option 3: broad chest. A broad thorax can aid lateral stability and trunk control during arm-swinging through the canopy, supporting the mechanics of suspensory movement. Hence, this feature is often associated with suspensory locomotion.
Option 4: relatively long forelimbs. Extended forelimbs are a hallmark of suspensory locomotion, providing the reach and leverage needed to hang and swing between supports. This feature is strongly linked to suspensory behavior.
In summary, three options describe traits commonly found with suspensory locomotion (long fingers, broad chest, long forelimbs), while the second option (long trunk) stands out as not typically associated due to its potential hindrance to effective suspensory movement.

Which anatomical feature is NOT associated with suspensory locomotion?单项选择题

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