succ

Secondary succession can happen after primary succession or independently of primary succession.

t

Succession is a process, with each new community paving the way for the next.

t

Which of the following is an example of a pioneer species? a. fungus b. trees c. shrubs d. grass

a

Succession performs a variety of functions within ecosystems. What is the main reason that succession is important in maintaining ecosystems? a. Succession allows the earth to change. b. Succession ultimately leads to climax communities, which are stable and sustainable. c. Succession keeps pollution from harming ecosystems. d. Succession allows simple organisms to play a larger role in ecosystems than normal.

b

Which of the following could be both a natural and a human cause of succession? a. lava flow b. overcutting c. fire d. wind

c

Succession is affected by _______. a. climate b. soil c. geography d. all of the above

d

Which of the following is not a characteristic of a climax community? a. high levels of biodiversity b. presence of complex organisms c. conditions suitable for all organisms d. experiences no change

d

Which of the following is the most likely cause of succession in ecosystems? a. arrival of new species b. rain c. loss of an animal species d. wildfires

d

How are primary and secondary succession similar? a. Both primary and secondary succession involve ecosystems that have no soil. b. Both primary and secondary succession involve ecosystems recovering from a disruptive event. c. Both types of succession require a pioneer species to aid recovery of ecosystems. d. Primary and secondary succession have no similarities.

not c

Human impact on ecosystems would most likely lead to secondary succession over primary succession.

t