Food Chains And Webs

Front 1

Food chains and food webs are often used to describe the energy relationships between organisms. Which statement identifies the difference between the food chains and food webs?

Back 1

Food webs are more complete and complicated models than food chains

Front 2

Which organism in the food web might die off if the rate population decreases?

Back 2

stoat

Front 3

Which statement best describes the significance of the arrows in a food web?

Back 3

it shows the flow of energy from the thing being eaten to the organism doing the consuming

Front 4

Which of the following statements best describes an energy pyramid and why the shape is smaller at the top?

Back 4

A. less energy is available moving up from the producers to the consumer

Front 5

Which level of the energy pyramid contains the most individual organisms?

Back 5

Primary producers

Front 6

What information is included in a food web?

Back 6

how energy flows and the feeding relationships in a food web

Front 7

Hummingbirds share a mutualistic relationship with the flowers they feed on. Which of these statements about the relationship between the flower and the hummingbird is true?

Back 7

Both the flower and the hummingbird are helped.

Front 8

What happens to both organisms in a parasitic relationship?

Back 8

For one of them it is beneficial and the other is negatively affected.

Front 9

A desert is an ecosystem that has relatively high temperatures and low amounts of rainfall. Which of these abiotic factors can limit the size of a population in a desert?

Back 9

water

Front 10

What happens to a population of birds when a resource that is a limiting factor in the environment, such as nesting sites, suddenly becomes scarce, which means less available?

Back 10

The population size will decrease to a size that can be supported by that limiting factor.

Front 11

The Florida panther used to live in forests, prairies, and swamps that at one time covered most of the southeastern United States. Now the panther lives in the southern tip of Florida. Based on this information, what is the main factor that has contributed to the decline of the Florida panther population?

Back 11

loss and the breaking up of habitat

Front 12

In a laboratory setting, scientist are investigating the relationship between the temperature of an alligator’s nest and the gender – male or female – of the hatched eggs. Five different nests are kept at five different temperatures ranging from cool to very warm. The percentage of male and female hatchlings (baby alligators) is recorded. What is the independent variable in this investigation?

Back 12

the temperatures of the nests