Final answer:
Bilateral symmetry in biology is when an object can be divided into two equal, mirror-image halves across a unique plane. The compound in the last flashcard is likely exhibiting bilateral symmetry, and a plane of symmetry can be found by cutting it down the front to back of the organism.
Step-by-step explanation:
Bilateral symmetry is a type of symmetry in biology where an object can be divided into two equal, mirror-image halves across a unique plane. In the context of the flashcard, the compound being referred to likely exhibits bilateral symmetry. A plane of symmetry can be found by cutting the compound down the front to back of the organism, resulting in distinct left and right sides that are mirror images of each other.