Ecology Test

What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

If there are 100 Kcal of energy available in the producers, how much energy would be available in the primary consumers?

• 10 Kcal

• 1 Kcal

• 100 Kcal

• 1000 Kcal

Order the biological levels from the most complex to the simplest.

• biosphere

• organism

• population
• community

• ecosystem

​ ​ ​ ​ The molecule ​ (a)   , a sugar/carbohydrate and (b)   gas is produced when plants, algae, and cyanobacteria photosyntesize.

• glucose
• oxygen
• carbon dioxide
• water

Angel was trying to explain the concept of carrying capacity to her mother. Which of the following descriptions is accurate? Carrying capacity is:

• The maximum number of individuals that an ecosystem can sustain.

• The ability of an environment to accommodate a growing population.

• The greatest number of individuals that an area can sustain over the long term.

• The maximum number of species that can co-exist in an area.

What does the graph represent?

• Logistic Growth

• Exponential Growth

What does the graph represent?

• Logistic Growth

• Exponential Growth

A large decrease in the sea otter population would most likely cause the size of which of the following populations to increase the most?

• Sea star

• Barnacle

• Kelp

• Phytoplankton

Using the energy pyramid shown, which of the following is true?

• #1 is a producer and obtains the least energy.

• #1 is a consumer and obtains the least energy.

• #2 is a consumer and obtains the most energy.

• #3 is a consumer and obtains the least energy.

Which of the following best explains the orca population changes between 1996 and 2002?

• The number of orcas born was less than the number of orcas that died.

• The number of orcas emigrating was higher than the number of orcas immigrating.

• The total number of orca births and immigrants was more than the total number of orca deaths and emigrants.

• The total number of orca births and deaths was greater than the total number of orca immigrants and emigrants.