MYP Biology 5.8 Unity and Diversity Questionbank

The term __________ refers to the differences in traits between organisms or species that arise as they adapt to different environments.

Lions and tigers are placed in the same Genus but are different species. Which aspect of their biology most clearly demonstrates 'diversity' according to the classification hierarchy?

Humans and bacteria recently diverged from a common ancestor

The structure was so successful in early life that evolution conserved it

Phospholipids are the only molecules that can physically form a barrier

Both organisms live in the exact same environmental conditions

Core chemistry is not subject to the laws of mutation

ATP is a larger molecule than pigments and therefore is physically harder to change

Changes in core chemistry are usually lethal, whereas changes in fur color are often non-lethal and potentially beneficial

Fur color is determined entirely by the environment and is not encoded in DNA

Most mutations are harmful because they disrupt a highly successful and vital function

No mutations ever occur in these sequences because they are protected by the cell

Mutations occur significantly slower in these specific genes compared to others

Most mutations are beneficial and lead to rapid changes

Hierarchy

Unity

Conservation

Diversity

Their multicellular structure

Their use of DNA as genetic material

Their method of obtaining food

Their specific habitat and behavioral adaptations