Bio 110 CH 12

Ecology is a science that can be carried out by ________. A) learning by observing B) running experiments to test hypotheses C) both learning by observing and running experiments to test hypotheses D) neither participating in a march to demand actions on climate change

C (both learning)

To best assess the species diversity in one area, one should measure ________. A) the number of species in the area B) the relative abundance of the dominating species of the area C) both the number of species and their relative abundance in the area D) we cannot assess accurately the species diversity of one area

C (both the number of species and their relative abundance)

Which of the following scenarios describe an ecological succession? A) An old field left abandoned that transforms back into a forest over time B) The site of a volcano eruption that is going back to its pre-eruption state C) The regrowth of a forest after a fire D) All of the above are examples of ecological succession

D (all of the above)

The Asian kudzu bug (Megacopta cribaria) arrived in Atlanta in 2009 and is quickly spreading across the South. In addition to eating kudzu, it also eats soybeans and can decimate entire crops. The kudzu bug is a type of ________ species. A) control B) keystone C) umbrella D) invasive

D (invasive)

An ecosystem is a collection of all the ________ in a given area. A) abiotic factors B) plants C) plants and animals D) living and nonliving things

D (living and non living)

All ecosystems need energy. What is the originating source for most of the energy that powers ecosystems on this planet? A) Geothermal energy B) Wind energy C) Solar energy D) Potential energy

Solar energy

All living things need carbon. How does most carbon enter the living portion of an ecosystem? A) Atmospheric CO2 taken in by photosynthesis B) Atmospheric CO2 taken in by soil bacteria C) Elemental carbon taken in by plant roots D) Elemental carbon taken in by plant leaves

A (atmospheric)

The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession. A) primary B) species-rich C) opportunistic D) secondary

A (primary)

What type of species, if removed from the community, could lead to the collapse of the entire community? A) Invasive species B) Keystone species C) Indicator species D) Flagship species

B (Keystone)

Plants rely on pollinators to reproduce, while pollinators rely on plants to provide nutrients. This is an example of ________. A) parasitism B) mutualism C) predator-prey D) commensalism

B (mutualism)