Evolution pt 1

Darwin was prompted to publish his theory of evolution by

• the publication of Larmarck's theory of evolution

• an essay by Wallace on evolution

• the vice governor of the Galapagos Islands

• the work of Hutton and Lyell

Darwin was unaware of _________.

• fossils

• the age of the world

• the structure of DNA

• species well adapted to their environment

James Hutton's and Charles Lyell's work suggests that

• all rocks on Earth contain fossils

• all fossils were formed in the last 1000 years

• Earth is several thousand years old

• Earth is many millions of years old

Refer to the illustration. The bones labeled "X" can be referred to as

• homologous structures

• sequential structures

• vestigial structures

• fossil structures

Lamarck's theory of evolution includes the concept that new organs in a species appear as a result of

• the actions of organisms as they use or fail to use body structures

• continual increases in population size

• the natural variations already present within the population of organisms

• an unchanging local environment

The number and location of bones of many fossil vertebrates are similar to those in living vertebrates. Most biologists would probably explain this fact on the basis of

• a common ancestor

• the intelligence of the organism

• the inheritance of acquired traits

• the needs of the organisms

Which is a major concept included in Lamarck's theory of evolution?

• Population size decreases the rate of evolution

• Artificial selection is the basis of evolution

• Change is the result of survival of the fittest

• Body structure can change according to the actions of the organisms

The same kinds of cells that grow in similar patterns in different but related organisms produce

• homologous structures such as wings and arms

• very different embryos

• descent with modification

• natural variations in a population

When lions prey on a heard of antelopes, some antelopes are killed and some escape. Which part of Darwin's concept of natural selection might be used to describe this situation?

• acquired characteristics

• reproductive isolation

• survival of the fittest

• descent with modification

On the Galapagos Islands, Charles Darwin observed

• species completely unrelated to those found in South America

• species exactly like those found in South America

• somewhat similar species, with traits that suited their particular environments

• completely unrelated species on each of the islands