Most animals that are in deep oceanic water are?
1. Primary consumers
2. Secondary consumers
3. Tertiary consumers
The vertical distribution of different species occupying different levels in a biotic community is known as:
The mass of living material at a tropic level at a particular time is called:
In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:
1. net primary productivity
2. gross primary productivity
3. secondary productivity
4. net productivity
Most animals are tree dwellers in a:
If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain?
Plant → mice →snake→ peacock
|1.||0.02 J||2.||0.002 J|
|3.||0.2 J||4.||0.0002 J|
Which one of the following processes during decomposition is correctly described?
|1.||Humanification-Leads to the accumulation of a dark-coloured substance in humans which undergoes microbial action at a very fast rate|
|2.||Catabolism-Last step decomposition under fully anaerobic condition|
|3.||Leaching-Water soluble inorganic nutrients rise to the top layers of the soil|
|4.||Fragmentation-Carried out by organisms such as earthworms|
Secondary productivity is the rate of formation of new organic matter by: