Unit 7 Evolution Test Review

Front

What is Darwin's theory of evolution by natural selection?

Back

Darwin's theory states that more offspring are produced than can possibly survive, leading to a struggle for existence. The individuals that are best adapted to their environment are more likely to survive and reproduce.

Front

What is essential for a species to survive?

Back

A species must be able to reproduce successfully to ensure its survival.

Front

What is embryology?

Back

Embryology is the study of embryos of various organisms, showing similarities in development that suggest a common ancestor.

Front

What determines if a mutation leads to a new species?

Back

A mutation must provide some type of advantage for the organism for it to potentially lead to the formation of a new species.

Front

What is a heterotroph?

Back

A heterotroph is an organism that gets its food from other living organisms.

Front

What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define speciation.

Back

Speciation is the evolutionary process by which populations evolve to become distinct species.

Front

What is the role of mutations in evolution?

Back

Mutations introduce new genetic variations, which can lead to new traits that may be advantageous for survival.

Front

What is the significance of fossil records in evolution?

Back

Fossil records provide evidence of past life forms and show the changes in species over time, supporting the theory of evolution.

Front

What is the difference between autotrophs and heterotrophs?

Back

Autotrophs produce their own food (e.g., plants), while heterotrophs obtain food from other organisms.