Correct option is B
Introduction:
- The standing crop in an ecosystem refers to the total biomass (dry weight) of living organisms present at any given moment.
Information Booster:
- The general trend of standing crop (dry weight) from lowest to highest in various ecosystems is as follows:
- Desertified Areas: These areas, often caused by human activities and climate changes, have very low biomass because of the scarcity of water and vegetation.
- They are characterized by dry, barren landscapes where only a few hardy species can survive.
- Tropical Grasslands: Grasslands, while more productive than deserts, still have lower biomass compared to wetlands and forests.
- They support grasses and a few other species but do not sustain as much biomass as tropical swamps or forests.
- Tropical Swamps: Swamps, particularly tropical swamps, have high primary productivity due to abundant water and favorable temperature conditions.
- These ecosystems support a rich diversity of plant species, contributing to a high standing crop.
- Boreal Forest : Boreal forests, despite being quite productive, have a moderate standing crop.
- The shorter growing season and colder temperatures slow down plant growth, leading to less biomass compared to tropical ecosystems.
- Tropical Forest : Tropical forests, due to their biodiversity, warmth, and consistent rainfall, have the highest standing crop.
- These ecosystems support vast amounts of biomass, with dense forests containing a large number of plant species and large trees.