Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
35. Define decomposer.
|
Decomposers are organisms that get energy by breaking down the remains of dead organisms
|
|
|
36. Why should there be many more prairie dogs than coyotes in a prairie ecosystem? (Short Answer)
|
It takes many prairie dogs to support just one coyote since very little energy is transferred to the coyote when it eats the prairie dog. So it takes a large number to support an entire population of coyotes.
|
|
|
37. In the antarctic ecosystem, what animal are krill a source of food?
|
COD, penguin, crabeater seal
|
|
|
38. Give an example of a food chain.
|
Algae>>>Krill>>>Cod>>>Seal>>>>Whale
|
|
|
39. Energy in a food chain flows from one organism to another as each organism
____________________________________. |
Eats the one below it.
|
|
|
40. How does a decomposer respond to biomass? (Short Answer)
|
Decomposers break down biomass in a process called decay. During decay, decomposers break down biomass, releasing energy and stored nutrients.
|
|
|
29. Energy is ______________ at each level of an energy pyramid.
|
Lost
|
|
|
30. When a mouse hides under a rock during a rainstorm, what part of its environment is it responding to?
|
Nonliving
|
|
|
31. What do fungi and other decomposers break down?
|
Biomass
|
|
|
32. As decomposers break down the remains of other organisms, what do they put back into the ecosystem?
|
Nutrients
|
|
|
33. What does a grass plant use most of the energy it gets from the sun on?
|
Its own life processes
|
|
|
34. How do decomposers benefit an ecosystem?
|
Decomposers benefit an ecosystem by
1. Returning nutrients to the soil and 2. Breaking down dead organisms. |
|
|
23. What do food webs show?
|
Food webs show that energy flows in many ways through an ecosystem
|
|
|
24. Name 2 nonliving parts of an ecosystem to which organisms may respond.
|
1. Air temperature
2. Rain |
|
|
25. What links together in a community to form food webs?
|
Food chains
|
|
|
26. Name three things that that organisms can respond to.
|
1. Other organisms
2. The nonliving environment 3. Themselves |
|
|
27. The amount of available energy becomes __________________ at each higher level in a food chain.
|
Smaller
|
|
|
28. If you yawn when you are tired, what type of stimulus are you responding to?
|
Internal stimulus
|
