Bootcamp quiz 2 (Reproduction, Genetics, Ecology)

When a natural disaster destroys a stable ecosystem, the area is temporarily less stable than before. This is most likely due to  

• (1) a decrease in biodiversity 
• (2) an increase in the number of food chains
• (3) an increase in the number of species
• (4) a decrease in the rate of mutation

A food web is represented on the right. Which organism would receive the least amount of transferred solar energy? 

• Grasses
• Owls
• Frogs
• Field Mice

A food web is represented on the right. Which organism would receive the most amount of transferred solar energy? 

• Grasses
• Owls
• Frogs
• Field Mice

Populations of aspen trees in the western United States are being destroyed by an unexplained illness. The altered landscape is affecting the animals that live there. Populations of deer mice are increasing greatly in these areas. Unfortunately, these mice often carry a virus that is deadly to humans. This scenario best illustrates that  

• (1) a change in the environment always results in disease 
• (2) humans are the cause of the breakdown of this ecosystem
•  (3) the stability of this ecosystem is limited by the amount of water available
• (4) every population in an ecosystem is linked with other populations

Dodder, a plant with no chlorophyll, grows on a living plant of a different species from which it obtains nutrients. Which pair of terms describes this relationship?  

• (1) parasite and host
• (2) predator and prey 
•  (3) producer and decomposer
• (4) consumer and scavenger

The Eurasian water milfoil is a nonnative species, which was once commonly sold as an aquarium plant, and is now found growing in many lakes in New York State. It has few natural enemies, and grows rapidly, crowding out many native species. This plant ruins fishing areas and interferes with boating and other water sports. This is an example of 

• (1) human consumption of finite resources 
• (2) an unintended consequence of adding an organism to an ecosystem 
• (3) an abiotic factor having a negative effect on an ecosystem 
• (4) the introduction of a species that has increased the long-term biodiversity of an ecosystem

Which process is represented in the diagram?

• energy flow
• biological evolution
• cellular communication
• ecological succession

Which of the following is an example of competition?

• Two vultures fight over a dead rabbit
• A bear eats a fish
• Birds migrate south
• Pet dog keeps a man company

^{_{What is the carrying capacity of the following graph?}}

• 1000
• 8000
• 800
• 600

_{Which term refers to the ecological niche of many bacteria and fungi in an ecosystem}

• decomposer
• herbivore
• producer
• scavenger