Ecosystem – Solutions

1. Fill in the blanks.

a) Plants are called _____ because they fix carbon dioxide.

b) In an ecosystem dominated by trees, the pyramid (of numbers) is of the ____.

c) In aquatic ecosystems, the limiting factor for productivity is ______.

d) Common detritivores in our ecosystem are ______.

e) The major reservoir of carbon on the earth is _____.

Solution:

a) Plants are called autotrophs because they fix carbon dioxide.

b) In an ecosystem dominated by trees, the pyramid (of numbers) is of the inverted type.

c) In aquatic ecosystems, the limiting factor for productivity is light