Components Types Of Ecosystems
High-Yield Trend
Questions 13 MCQs
| 1. | grasslands | 2. | agro-ecosystems |
| 3. | oceans | 4. | forests |
1. temperate deciduous forests
2. alpine forests
3. scrub forests
4. tropical rain forests
1. mangroves
2. tropical rainforests
3. alpine forests
4. temperate forests
Which one of the following is not a gaseous biogeochemical cycle in the ecosystem?
1. Sulphur cycle
2. Phosphorus cycle
3. Nitrogen cycle
4. Carbon cycle
Which one of the following is not a functional unit of an ecosystem?
1. Energy flow
2. Decomposition
3. Productivity
4. Stratification
2. Rock
3. Fossils
4. Sea water
In which of the following, do both pairs have the correct combination?
| 1. | Gaseous nutrient cycle Sedimentary nutrient cycle | Carbon and nitrogen Sulphur and phosphorous |
| 2. | Gaseous nutrient cycle Sedimentary nutrient cycle | Carbon and sulphur Nitrogen and phosphorus |
| 3. | Gaseous nutrient cycle Sedimentary nutrient cycle | Nitrogen and sulphur Carbon and phosphorous |
| 4. | Gaseous nutrient cycle Sedimentary nutrient cycle | Sulphur and phosphorous Carbon and nitrogen |
During ecological succession:
| 1. | gradual and predictable change in the composition of species occurs in a given area. |
| 2. | establishment of a new biotic community is very fast in its primary phase. |
| 3. | the number and types of animals are constant. |
| 4. | changes lead to a community that is in equilibrium with the environment and is called a pioneer community. |
Most animals that are in deep oceanic water are?
1. Primary consumers
2. Secondary consumers
3. Tertiary consumers
4. Detritivores
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:
1. Tropical Rain Forest
2. Grassland
3. Temperate Forest
4. Tropical Savannah
Which of the following statements is incorrect regarding the phosphorus cycle?
| 1. | Phosphates are the major form of phosphorus reservoir. |
| 2. | Phosphorus solubilizing bacteria facilitate the release of phosphorus from organic remains. |
| 3. | There is an appreciable respiratory release of phosphorus into the atmosphere. |
| 4. | It is a sedimentary cycle. |
The amount of nutrients, such as carbon, nitrogen, phosphorus, and calcium present in the soil at any given time, is referred to as:
1. Standing state
2. Standing crop
3. Climax
4. Climax community
Which one of the following will accelerate phosphorus cycle?
1. Rainfall and storms
2. Burning of fossil fuels
3. Volcanic activity
4. Weathering of rocks