| 1 |
Which of the following biogeochemical cycle is not component of ecosystem. |
Carbon cycle
Potassium cycle
Oxygen cycle
Nitrogen cycle
|
| 2 |
Which of the following statement is not true with respect to the role of matter undergoing decomposition. |
Decomposed matter increase soil fertility
They provide a texture which is favorable for plant growth
Organic compounds for complexes with mineral nutrients which enhance uptake by plants.
In high concentration the decomposition product may increase the photosynthesis
|
| 3 |
Which of the following statements is not related to the decomposition phenomenon occurring in nature. |
Decomposition is due to autotrophic organisms
Decomposition involves bacteria and fungi
During decomposition organisms carry out specific reactions
Many species of decomposer are present in the biosphere
|
| 4 |
Which of the following process involves the use fo organic compound as an electron acceptor. |
Aerobic respiration
Anaerobic respiration
Fermentation
Glycolsis
|
| 5 |
In biological ecosystem which of the following substance is used by organisms. |
Water
Sunlight
Minerals
All above
|
| 6 |
Which of the following energy is trapped by the autotrophic organisms. |
Mechanical energy
Electrical energy
Radiant energy
Electronic energy
|
| 7 |
Which of the following is component of the ecosystem. |
Inorganic substances
ORGANIC Substances
Animal and plants only
All above
|
| 8 |
Which of the following statement is not related with industrial ecology. |
Study of interactions between human activities and its environment
Industrial ecology seeks to optimize the total industrial materials cycle from virgin material to finished product
Industrial impacts on the environment
Economic system are viewed in isolating from their surrounding
|
| 9 |
The action of all the relations of all the organism to their environment is called |
Biology
Botany
Ecology
Archiology
|
| 10 |
Which of the following statement is not related with environmental pollution. |
Direct or indirect change in any component of the biosphere
Undesirable change in the physical characteristics of the air
Undesirables change in the biological characteristics of the soil
not affecting adversely the industrial progress
|
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