| 1 |
All ecosystems of the world combine to form: |
- A. Community
- B. Population
- C. Biosphere
- D. Competition
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| 2 |
A relationship between species in which both species benefit is called. |
- A. Parasitism
- B. Mutualism
- C. Symbiosis
- D. Commensalism
|
| 3 |
The only source of energy for all ecosystems of the world is. |
- A. Sun
- B. Moon
- C. Plants
- D. Ocean
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| 4 |
Abiotic component of the ecosystem is: |
- A. Producers
- B. Consumers
- C. Decomposers
- D. Light
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| 5 |
All the population that live in a habitat and interact in various ways with one another are collectively called: |
- A. ecosystem
- B. community
- C. biosphere
- D. populations
|
| 6 |
Primary source of energy for all ecosystem is. |
- A. Electricity
- B. Sun
- C. Fire
- D. Nutrients
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| 7 |
The basic tropic level of all food chain is. |
- A. Producers
- B. Consumers
- C. Decomposers
- D. Reducers
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| 8 |
In an ecosystem the flow of _________ is one way, while _________ is/are constantly recycled. |
- A. Minerals, energy
- B. Energy minerals
- C. Oxygen, Energy
- D. Glucose, water
|
| 9 |
Which one of the following is not a temporary parasite? |
- A. Mosquito
- B. Virus
- C. Leech
- D. Bed bug
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| 10 |
Identify the correctly matched pair: |
- A. Rainfall biotic factors in ecosystem
- B. Global warming formation of fossil fuels
- C. Renewable natural resources air
- D. Corn secondary consumer
|