Life Science, Monday Opener, 3.11.19

The process by which populations slowly change over time is called__________

• selective breeding
• adaptation
• sepeciation
• evolution

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

If two organisms have similar traits of DNA they are probably

• share a common ancestor
• share a common environment
• share a common population
• speciation

What does Darwin's theory of evolution suggest?

• species change over time
• extinct species are not related to living species
• different species can interbreed
• animals that look alike are most closely related

Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• Better traits

Sea gulls nest in large colonies.  When a crow enters the colony in search of gull eggs to eat, the adult gulls attack the crow.  The gulls mob the crows in large numbers.  This mobbing behavior caused the crows to leave the colony, and the gull eggs remain safe.  The gulls reproduce successfully.  What scientific term BEST describes mobbing behavior in gulls?

• evolution
• adaption
• natural selection
• selective breeding

About 65 million years ago, a meteorite struck the Earth and caused many changes to the environment.  These changes happened suddenly, some species were not able to adapt.  MANY species died off in a very short time.  What is the scientific term that BEST describes this period of time?

• extinction
• evolution
• natural selection
• mass extinction

A group of students is working together to find fossils in a wall of limestone.  As they find fossils, they try to identify what type of organism they have found.  What type of animals are they MOST LIKELY to find fossilized in the wall?

• soft bodied animals, such as worms.
• hard-bodied animals, such as beetles.
• common species of animals that are alive today.
• rare animals that were in a few places in the environment.

What is one reason why fossils are so rare?

• because there are many processes on Earth that destroy living tissue

• because the Earth has not had many organisms living on it

• because the Earth is very young

• because humans destroy all the fossils they can find

On the Galapagos Islands many different species of iguana exist. Some iguanas are large, black, and eat food found in the ocean. Other iguanas are smaller, different colored, and eat food found on the island. What process MOST LIKELY explains the differences seen in the iguana species?

• convergent evolution

• bottleneck

• natural selection

• artificial selection