TLS Online TPP Program
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TLS Online TPP Program
#Question id: 12971
#Unit 10. Ecological Principles
One group of ecologists has suggested that producers are limited by competition for resources, primary consumers (herbivores) are limited by predation, and secondary consumers (carnivores) are limited by food. If this were true, at which of the following trophic levels would one expect to find substantial evidence for competitive exclusion?
TLS Online TPP Program
#Question id: 12970
#Unit 10. Ecological Principles
In deep-sea hydrothermal vents near the Galapagos Islands, bacteria obtain energy by oxidizing hydrogen sulphide released from the vents. Giant tube worms, which lack mouths and digestive systems, harbour the bacteria in their tissues and use them as a source of organic molecules. Clams obtain energy by filtering bacteria directly from the water, and numerous crabs and octopi feed on the clams. In this unique ecosystem, the bactena are playing the role of
TLS Online TPP Program
#Question id: 12969
#Unit 10. Ecological Principles
In which of the following habitats would one expect to find the highest diversity of vascular plants?
TLS Online TPP Program
#Question id: 12968
#Unit 10. Ecological Principles
Most terrestrial ecosystems have a pyramidal structure of where biomass of producers > primary consumers > secondary consumers > tertiary consumers. However, some aquatic ecosystems have an inverted pyramidal structure where the standing biomass of producers < primary consumers. An explanation for this is:
TLS Online TPP Program
#Question id: 12967
#Unit 10. Ecological Principles
Which of the following is the best explanation for why net primary productivity in terrestrial ecosystems tends to increase toward the tropics?
TLS Online TPP Program
#Question id: 12966
#Unit 10. Ecological Principles
You are planning a dive in a lake, and are eager to observe not many underwater organisms but be able to observe them both close up and far away. You would do well to choose