AP BIO: Ecology

Introduced or invasive species are often threatening because:

• They contribute to commensalism

• They do not adapt well to new environments

• They increase biodiversity

• They often lack natural predators

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A bird nests in a tree.  The tree does not gain any benefit and is not harmed.  What relationship best describes this?

• commensalism

• parasitism

• mutualism

• mimicry

Which of the following would have the largest biomass in any given terrestrial ecosystem?

• autotrophs
• secondary consumers
• primary consumers
• tertiary consumers

Tags

NGSS.MS-LS2-3

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

• It will increase.
• It will decrease.
• It will stay the same.
• It will fluctuate.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

Which factor is a density-dependent limiting factor on the population of a species?

• the presence of a toxin in a water source

• natural disasters

• unusual weather

• predation

Tags

NGSS.MS-LS2-4

A population growth rate will _____ near _____.

• Increase; lag phase

• Increase; Carrying Capacity

• Slow; Carrying Capacity

• Slow; lag phase

Tags

NGSS.HS-LS2-1

A population is...

• A group of species in one area
• Multiple species that live in one area
• All of the living and nonliving things in an area
• All biotic and abiotic factors in an ecosystem

In this Food Web Pyramid, if 700,000 kJ of energy is stored in autotrophs as biomass, how much energy is available to be stored as biomass for secondary consumers?

• 7,000

• 700

• 700,000

• 70

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

In the energy pyramid shown, which organism has the least amount of biomass?

• Producers

• Herbivores

• Carnivores

• Apex Predator

Tags

NGSS.MS-LS2-3

What percentage of energy is passed on to each tropic level in an energy pyramid?

• 10%
• 50%
• 90%
• 100%

Tags

NGSS.MS-LS2-3