BDY511 Chap 3 & 4

Bacteria that obtain energy by oxidizing sulfide ions to sulfur is known as...

• Photoautotroph

• Chemoautotroph

• Heterotroph

• Saprotroph

Define gross primary production (GPP).

• The amount of light energy absorb by the producer.

• The amount of energy that been transferred to another trophic level.

• The amount of light energy that converted to chemical energy by photosynthesis per unit time.

• It represent the storage of chemical energy that is available.

Which of the following do not limit the primary production in aquatic and terrestrial ecosystem?

• Light

• Temperature

• Energy

• Nutrient

Choose two (2) key processes of hydrologic cycle.

• Precipitation

• Aerobic respiration

• Denitrification

• Transpiration

Select two (2) key processes of phosphorus cycle.

• Nitrifying bacteria convert nitrate to phosphorus.

• Weathering of rock gradually add phosphate to soil.

• Phosphate is returned to the soil or water through the decomposition of biomass.

• The burning of fossil fuels adding significant amount of phosphorus to the atmosphere.

Define ecotone.

• Refers to the organization and functioning communities which they interact with each other within particular habitat.

• The study of organism and how they interact with the ecosystem.

• At the edge of the two overlapping ecosystem where we can find the unique species.

• The transitional zone or junction between two or more diverse communities.

Which of the following is not the types of ecotone?

• Inherited ecotone

• Induced ecotone

• Convoluted ecotones

• Wide ecotone

Identify the types of ecotone that is anthropogenic and successional changes over time.

• Narrow ecotone

• Induced ecotone

• Perforated ecotone

• Inherent ecotone

A forest and lake has a large transition zone based upon physical factor and vegetation. Identify this type of ecotone.

• Narrow ecotone

• Wide ecotone

• Convoluted ecotone

• Perforated ecotone

The ecotone that has transitional gaps by having a different habitat is known as...

• Perforated ecotone

• Convoluted ecotone

• Inherent ecotone

• Induced ecotone