Bio exam practice

Biogeography is ______.

• the study of interaction between living things and their environment

• the study of how factors affect population growth and structure through time

• the study of the physiological, behavioral, or evolutionary mechanisms used by individual organisms to meet ecological challenges

• the study of the geographic distribution of both extant (living) and extinct organisms and the abiotic factors that affect their distribution

Which of the following is a biotic factor?

• pH of soil

• wind

• algae floating in the pelagic zone

• temperature

Which of the following is not an abiotic factor?

• salinity

• pH

• temperature

• light

• bacteria

Which characteristics(s) is or are commonly used to identify terrestrial biomes on Earth? 

• temperature only

• temperature and precipitation

• temperature and vegetation

• precipitation only

Which of the following biomes is characterized by high temperature, high precipitation, and many species of trees? 

• temperate forests

• tropical wet forests

• temperate grasslands

• tundra

In which of the following regions would you expect to find photosynthetic organisms?

• abyssal zone

• aphotic zone

• benthic realm

• photic zone

Which of the following is an example of a lotic ecosystem?

• Pond

• Lake

• Wetland

• River

What is the primary source of energy for most marine ecosystems?

• Phytoplankton

• Seaweed

•  

  Bacteria

• Zooplankton

How might increased salinity in a freshwater ecosystem affect the organisms living there?

• It could cause the water temperature to rise.

• It could lead to increased rates of photosynthesis.

• It could cause some organisms to dehydrate and die.

• It could decrease the amount of dissolved oxygen in the water.

Which of the following scenarios would most likely result in an increase in the number of endemic species on an island?

• A decrease in the island's distance from the mainland

• A decrease in the island's size

• An increase in the island's isolation from other landmasses

• An increase in the island's human population