You Learn That Two Species of Fish Co-Occurring in a Lake

question 32

Multiple Choice

You learn that two species of fish co-occurring in a lake evolved into different species because of divergent specialization on bottom- or open water - feeding behaviors.This is a remarkable example of what type of speciation?

• A) Rapid environmental speciation, because the environment drove the speciation event
• B) Sympatric speciation because the two fish lived in sympatry during the process of speciation
• C) Speciation dominated by a chance event, where the chromosome number randomly doubled
• D) Allopatric speciation, because the two fish were separated by the water.

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Definitions:

Cork Cells

Waterproof cells forming the outer protective layer of the bark in trees and other plants, composed of dead cells at maturity.

Vascular Bundle

A strand of tissue in plants that contains both xylem and phloem, responsible for the transport of water, minerals, and nutrients.

Cork Cambium

A layer of tissue in plants that produces cork, a protective barrier for the surface of stems and roots.

Ground Tissue

The bulk of most plant tissues, filling the space between the epidermis and vascular tissue systems, involved in photosynthesis, storage, and support.