The Wings of a Bird and the Wings of a Bat

question 8

Multiple Choice

The wings of a bird and the wings of a bat both form from the front appendages (arms) .The bird wing is covered by feathers and the bat wing consist of a thin layer of skin stretched between the "finger" bones. Are the wings of the bird and bat homologous or analogous?

• A) homologous since they evolved from the same body part
• B) analogous: birds' flight requires feathers and bats use skin; both are wings, but they evolved differently
• C) both: homologous in that they both evolved from a front appendage, but analogous in that they evolved differently
• D) neither since birds and bats do not share a recent common ancestor

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Definitions:

Euphotic Zone

The layer of a body of water that is sufficiently lit by sunlight, allowing photosynthesis to occur.

Bathyal Zone

The bathyal zone refers to the oceanic depth range from 200 to 4000 meters below the surface, characterized by limited sunlight and cooler temperatures, inhabiting a unique marine life.

Coastal Zone

The interface between land and water, including the shoreline and adjacent land areas that directly affect or are affected by marine processes.

Lake Turnover

The process of a lake's water turning over from top to bottom, bringing oxygenated water from the surface to the bottom and nutrient-rich water from the bottom to the surface.