Week 3 - Fossil Record

Which of the following correctly lists the geologic time  periods in order from OLDEST to MOST RECENT?

• Precambrian, Mesozoic, Paleozoic, Cenozoic
• Cenozoic, Mesozoic, Paleozoic, Precambrian
• Precambrian, Paleozoic, Mesozoic, Cenozoic
• Mesozoic, Paleozoic, Precambrian, Cenozoic

Which of these geologic periods is the earliest?

• Permian

• Cambrian

• Silurian

• Triassic

Which of these periods is part of the Mesozoic Era?

• Devonian

• Jurassic

• Ordovician

• Carboniferous

Which of these periods is part of the Paleozoic Era?

• Jurassic

• Cretaceous

• Permian

• Triassic

Which of these periods is part of the Cenozoic Era?

• Triassic

• Quaternary

• Devonian

• Silurian

A bat wing and a bird wing are both used for flight. This is an example of a ___ structure.

• Homologous

• Analogous

• Homeotropic

• Allotropic

Which of these structures is an example of a homologous structure?

• Human arm and whale flipper

• Insect wing and bird wing

• Fish fin and octopus tentacle

• Bat wing and insect wing

During the Carboniferous, dragonflies became jumbo-sized. This is an example of:

• directional selection

• stabilizing selection

• disruptive selection

• artificial selection

A tiny human baby can have trouble staying warm and is at risk of hypothermia. A large baby can cause complications during childbirth. The preference for medium-sized babies is an example of:

• directional selection

• stabilizing selection

• disruptive selection

• artificial selection

Humans have bred many different species of dogs, each with different characteristics. This is an example of:

• directional selection

• stabilizing selection

• disruptive selection

• artificial selection