APES - UNIT 2 THE LIVING WORLD

Guano from fish-eating birds is a common source of this element

Phosphorus

Which element limits primary production in freshwater lakes?

Phosphorus

Living organisms must acquire energy from their environment. Examples of adaptations that help organisms acquire this energy include ...

1) The dark, heat absorbing coloration of a reptile 2) The fangs and claws of a lion

A field is abandoned, and an invasive plant that can live in nutrient-poor soil moves into the field. If the land is later cleared of this invasive species and it is discovered that the soil has an abundance f nitrogen compounds, what conclusions can be made?

Bacteria in soil and in root nodules converted free nitrogen into nitrogen compounds

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include...

Carbon & Sulfur

Exemplified by moss growing on a tree trunk in the forest

Commensalism

Exemplified by starlings displacing bluebirds from nesting sites

Competition

Of the following organisms, which occupies the lowest trophic level? Show your knowledge of the trophic system

Deer Trophic levels: 4: large carnivores or omnivores that consume smaller animals 3: carnivores consume plant material 2: herbivores consume plant material 1: autotrophs produce energy by photosynthesis

Ecological concept that includes all others

Ecosystem

In the mediterranean climate regions like portions of California, a wetter-than-normal winter often leads to greater severity of fires the following summer. This seeming paradox occurs because increased rain leads to...

Greater accumulation of chaparral

Defining characteristic of a wetland involve...

Hydrology, soil type, species composition

Exemplified by bees consuming nectar and carrying pollen from one flower to another

Mutualism

Which has the lowest net primary productivity, measured as kilocalories of energy produced per square meter per year?

Open ocean

Exemplified by ticks feeding on a deer

Parasitism

The great grasslands of the world have which of the following primary characteristics in common?

Seasonal cycles of temperature and precipitation produce abundant vegetative growth.

Which of he following is a characteristic of tropical rainforests?

Soils are relatively poor in nutrients because most of them are stored in the plants.

His element in pyrite contributes to acid mine drainage

Sulfur

If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by adjacent development?

The biodiversity of the pond has decreased

What can be estimated from the sample of invertebrates in the pond

The species richness

Small populations of animals, such as those typically found on islands, are prone to extinction because

They are more valuable to unpredictable events

What is generally true for K-strategist species as compared to r-strategist species?

They have longer life spans