The Original Source of Salicylic Acid, the Pain-Relieving Substance in Aspirin

question 33

Multiple Choice

The original source of salicylic acid, the pain-relieving substance in aspirin, was ____.

• A) resin from conifers
• B) leaves from bamboo
• C) bark from willow trees
• D) fibers from flax plants
• E) seeds from yew trees

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Definitions:

Sexual Isolation

A mechanism of evolutionary divergence where different species or populations can no longer interbreed due to behavioral or genetic barriers.

Gametic Isolation

A prezygotic barrier where gametes (egg and sperm) of different species are incompatible, preventing fertilization.

Mechanical Isolation

A form of reproductive barrier where differences in the size and shape of reproductive organs prevent mating between species.

Sympatric Speciation

The evolution of a new species within the same geographic region as the parental species. Compare with allopatric speciation.