Q. No.The rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances is called as:
1. biomass
2. transpiration
3. net primary productivity
4. gross primary productivity
1. biomass
2. transpiration
3. net primary productivity
4. gross primary productivity
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The chemical energy that is not converted to new biomass in the process of energy transfer between trophic levels in an ecosystem is finally:
1. removed in the feces
2. recycled by decomposers
3. used by heterotrophs to thermoregulate.
4. dissipated into space as heat
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Aquatic ecosystems that are most adversely affected by acid are those that lack:
1. calcium
2. carbonic acid
3. nitrate
4. bicarbonate
The largest net primary production of the Earth is contributed by:
1. savanna
2. salt marsh
3. open ocean
4. tropical rainforest
An example of primary succession would be:
| 1. | Soil formation in the crater of an extinct volcano |
| 2. | Growth of a pine forest after a fire |
| 3. | Restoration of grass on a former agricultural field |
| 4. | Starfish colonizing on a coral reef |
The residual, after autotrophic respiration is subtracted from GPP, is:
| 1. | secondary productivity | 2. | net primary productivity |
| 3. | standing crop biomass | 4. | chemosynthesis |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Energy and nutrients enter an ecosystem and hence in a community through:
1. Producers
2. Consumers
3. Detritivores
4. Apex predators
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The prime driving force for the water cycle is:
| 1. | evapotranspiration from plants |
| 2. | rainfall |
| 3. | snowmelt |
| 4. | percolation of water through the soil |
The producers in aquatic ecosystems include all except:
| 1. | cyanobacteria | 2. | algae |
| 3. | plants | 4. | zooplankton |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.