1. The chemical equation CH 2 O + O 2 Ã CO 2 + H 2 O, is a simplified representa

Question

1. The chemical equation CH2O + O2Ã CO2 + H2O, is a simplified representation of what major process? A) photosynthesis; B) biomass burning; C) respiration; D) CO2 conversion to a greenhouse gas; E) evaporation.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

2. A biome is: A) the smallest possible region necessary for a particular species to survive;

B)a biological agent that contributes to humus decomposition; C) the broadest justifiable regional subdivision of the biosphere, containing an association of plants and animals; D) a specific ecological niche for an animal species; E) the outer edge of a tropical rainforest.

3. The total quantity of all living organic matter in an area is called the area’s: A) biota;

B) biomass; C) autotrophic mosaic; D) edaphic level; E) gross primary productivity.

4. The small stomata in the leaves of plants (leaf pore spaces) are sites for exchange with the atmosphere of:

A) carbon dioxide and water vapor; B) nitrous oxide; C) nitrogen gas; D) sulfur compounds; E) methane.

5. As one moves up the food chain, energy use efficiency: A) increases; B) stays about the same; C) doubles at each level; D) declines.

Explanation / Answer

1. C) respiration

2. C) the broadest justifiable regional subdivision of the biosphere, containing an association of plants and animals;

3. A) biota

4. A) carbon dioxide and water vapor

5. B) stays about the same

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