Refer to the Accompanying Figure

question 9

Multiple Choice

Refer to the accompanying figure. Suppose new molecular analyses indicated that the phylum Annelida had diverged from the arthropod lineage after Onychophora and Tardigrada. What would this imply about protostome evolution?
1) Segmentation evolved only once within protostomes.
2) The annelid lineage gained and then lost the ability to molt.
3) The annelid lineage gained and then lost jointed limbs.

• A) 1, 2, and 3
• B) 2 and 3
• C) only 3
• D) 1 and 2
• E) 1 and 3

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Definitions:

Mental Health

A state of well-being in which an individual realizes his or her own abilities, can cope with the normal stresses of life, can work productively, and is able to make a contribution to their community.

Depression

A psychological condition marked by a consistently low mood or a lack of enthusiasm for activities, significantly disrupting everyday functioning.

Dementia

A broad category of brain diseases that cause a long-term and often gradual decrease in the ability to think and remember, significantly affecting daily functioning.

Geographic Closeness

Refers to the physical proximity between places or people, affecting the ease of travel, communication, and relationship maintenance.