A) Consumer
B) Heterotroph
C) Carnivore
D) Decomposer
E) Producer
75. Describe a conceptual model:
A) a model that works best when dealing with relatively simple systems, specifically those
that can be accurately described by a set of mathematical equations whose behavior is
well known
B) a model that utilizes mathematical algorithms to predict complex responses in
ecosystem dynamics
C) a model that consists of mathematically complex models that are good at predicting
components of ecosystems such as food chains
D) a model that is generally considered more ecologically realistic, while analytic models
are valued for their mathematical elegance and explanatory power
E) a model that is represented by conceptual representations of the relationships between
different organisms in a community and their environment
76. "Vitality" of an ecosystem is a property which:
A) resists anthropogenic impact
B) characterizes the defences of the ecosystem and manifested in the ability of biocenosis
to heal itself
C) maintains stability within certain boundaries of anthropogenic loads
D) recoverers from the anthropogenic impact
E) determines the risk of loss of stability, balance and vitality of the ecosystem
77. Only 10 percent of the energy stored in an organism can be passed on to the
next trophic level. Of the remaining energy, some is used for the organism’s life
processes, and the rest is:
A) used in reproduction
B) eliminated as heat
C) stored as fat
D) used for digestion
E) stored as body tissue
78. What is biogas produced as a result of anaerobic fermentation of biological
mass?
A) methane (CH4)
B) ammonia (NH3)
C) hydrogen sulfide (H2S)
D) ozone (O3)
E) carbon dioxide (CO2)
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