Populations and Communities

All of the following are examples of limiting factors for a population except...

• space
• food
• time
• weather

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

In which type of interaction do both species benefit?

• predation
• mutualism
• commensalism
• parasitism

Which of these relationships is an example of parasitism?

• a bird building a nest on a tree branch
• a bat pollinating a saguaro cactus
• a flea living on a cat's blood
• ants protecting a tree that produces the ants' only food

The series of predictable changes that occur in a community over time is called

• natural selection
• ecology
• commensalism
• succession

In general, which of the following is a true statement about population size?

• If birth rate < death rate, population size increases
• If death rate < birth rate, population size decreases
• If birth rate > death rate, population size increases
• If death rate > birth rate, population size increases

A freshwater lake has a muddy bottom, which is home to different types of algae and other organisms. Many species of fish feed on the algae. Which of the following is an ABIOTIC factor in this ecosystem?

• the temperature of the water
• the color of the algae
• the number of species of fish
• the amount of food available to the fish

Tags

NGSS.MS-LS2-3

Which of the following lists the levels of organization in an ecosystem from the smallest unit to the largest?

• population, organism, community, ecosystem
• organism, population, ecosystem, community
• organism, community, population, ecosystem
• organism, population, community, ecosystem

All the living and nonliving things that interact in a particular area make up a(n)

• ecosystem
• population
• community
• biome

All the different populations that live together in an area make up a(n)

• ecosystem
• community
• habitat
• organism

Counting hawks with and without bands on their legs is

• direct observation
• indirect observation
• sampling
• mark and recapture