Friday: Evolution Quiz

What is 'COMPETITION' in an ecological sense?

• A type of symbiotic relationship where both species benefit

• A process where organisms vie for the same resources in an ecosystem

• A mutual relationship between predator and prey

• A situation where one organism lives on or in another organism

In a biological context, 'ANALOGOUS' refers to structures that are:

• Structurally similar but functionally different

• Functionally similar but structurally different

• Both structurally and functionally similar

• Neither structurally nor functionally similar

Explain the concept of 'VESTIGIAL' structures.

• Vestigial structures are fully functional and necessary for survival.

• Vestigial structures are remnants of organs or structures that had a function in an early ancestor.

• Vestigial structures are newly evolved structures that have a specific function.

• Vestigial structures are structures that have no evolutionary significance.

The definition of the term natural selection is:

• A process of change by which an organism or species becomes better suited to its environment.

• A sudden and unexplained change in behavior.

• A type of mutation that occurs randomly.

• A form of communication between species.

________ structures are body parts or behaviors that were once useful to an organism's ancestors but are no longer necessary or have diminished in function in the current species. E.g. human appendix, tailbone.

• Vestigial

• Functional

• Essential

• Primary

Type of selection: Finches with medium-sized beaks, which were not specialized for either food source, faced greater competition and had lower survival rates.

The term 'HOMOLOGOUS' refers to structures that are:

• Identical in function but different in origin

• Different in function but similar in origin

• Identical in both function and origin

• Different in both function and origin

Type of evidence for evolution where species may share similar physical features because they share a common ancestor.

• homologous structures

• analogous structures

• vestigial structures

• convergent evolution

Explain the term 'ANATOMICAL'.

• Related to the structure of organisms

• A type of chemical reaction

• A mathematical concept

• A historical event

Give the type of selection: Babies with average birth weights are more likely to survive than those who are either very small or very large.

• directional

• sexual

• stabilizing

• disruptive