Select the correct match from the following
I. Sedimentary nutrient – Nitrogen cycle
II. Pioneer species – Lichens
III. Secondary succession – Burned forests
IV. Pyramid of biomass in sea – Always upright
Select the correct match from the following
I. Sedimentary nutrient – Nitrogen cycle
II. Pioneer species – Lichens
III. Secondary succession – Burned forests
IV. Pyramid of biomass in sea – Always upright
The correct option is C II and III only
1. Biogeochemical cycles are of two types (a) gaseous (b) sedimentary cycles. Gaseous cycles have their nutrient reserves in the atmosphere mainly, for example, nitrogen and carbon cycle. The sedimentary cycles like the phosphorus cycle have their nutrient reserves in the soil, rocks and minerals.
2. The successive development of different biotic communities at the same site until a stable community develops there is called ecological succession. The species that invade a bare area are called pioneer species. In primary succession on rocks, these are usually lichens which are able to secrete acids to dissolve rock, helping in weathering and soil formation. These later pave the way for some very small plants like bryophytes which are able to take hold in the small amount of soil.
3. Secondary succession is a biotic succession on a secondarily bare area created due to forest fire, repeated floods, deforestation etc.
4. Pyramid of biomass in oceans is always inverted because the biomass of the primary producer (phytoplankton) is the least when compared to the higher levels of organisms.
1. Biogeochemical cycles are of two types (a) gaseous (b) sedimentary cycles. Gaseous cycles have their nutrient reserves in the atmosphere mainly, for example, nitrogen and carbon cycle. The sedimentary cycles like the phosphorus cycle have their nutrient reserves in the soil, rocks and minerals.
2. The successive development of different biotic communities at the same site until a stable community develops there is called ecological succession. The species that invade a bare area are called pioneer species. In primary succession on rocks, these are usually lichens which are able to secrete acids to dissolve rock, helping in weathering and soil formation. These later pave the way for some very small plants like bryophytes which are able to take hold in the small amount of soil.
3. Secondary succession is a biotic succession on a secondarily bare area created due to forest fire, repeated floods, deforestation etc.
4. Pyramid of biomass in oceans is always inverted because the biomass of the primary producer (phytoplankton) is the least when compared to the higher levels of organisms.
