Unit 7 Quiz 1

First organisms were

• Eukaryotes
• Photosynthetic prokaryotes
• Anaerobic prokaryotes
• Aerobic prokaryotes

What is biogenesis?

• life from nonlife
• organic compounds
• living organisms can produce living organisms
• new species

What is spontaneous generation?

• life from life
• life arises from nonlife
• trait inherited from same species
• not a real word

What was the experimental difference with Pasteurs flasks

• contact with air
• nutrient broth
• s shaped flask
• contact of broth with microorganisms

Which scientist wanted to disprove the idea of spontaneous generation by growing maggots in jars that were covered/uncovered?

• Spallanzani
• Redi
• Pasteur

The species of finches that Darwin observed differed in the shape of their beaks.  According to Darwin, all of these species probably differed due to...

• natural selection
• had migrated from Africa
• had descended from similar birds in Africa
• ate the same diet

Natural selection is the process by which...

• the age of selected fossils is calculated
• organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment
• acquired traits are passed on from one generation to the next
• all answers are correct

 In a population of clover flowers, there are both white and purple varieties.  The cows that graze the field where the clover grows prefer the purple variety.  Over time, the white clover flowers become much more numerous and the purple ones more scarce.  This is an example of which process that can cause evolutionary change?

• genetic equilibrium
• genetic mutation
• natural selection
• overproduction

According to Darwin, evolution occurs...

• only through artificial selection
• during half-life periods of 5,715 years
• because of natural selection
• so rapidly that it can be observed easily

Which of the following is a correct statement about the relationship between natural selection and evolution?

• Natural selection results from evolution.
• Natural selection includes evolution as a part of it.
•  Natural selection is one mechanism of evolution.
• Natural selection and evolution are the same thing.