Which of the following is among the least productive ecosystems?
Least productive ecosystem is desert and deep lake.
What is the least productive ecosystem on earth?
Deserts
Deserts, tundra, and the deep ocean are the least productive ecosystems, typically having an energy fixation of less than 0.5 × 103 kilocalories per square meter per year (thousands of kcal/m2/yr; it takes one calorie to raise the temperature of one gram of water by 34°F [1°C] under standard conditions, and there are …
Are coral reefs least productive ecosystem?
In oceans, there are lots of nutrients but no sufficient sunlight is available in deep areas hence, oceans have least productivity. Grasslands are less productive ecosystem with annual productivity of 200-100gm/m2. Maximum productivity can be seen in coral reefs followed by estuaries.
Is Coral Reef the most productive ecosystem?
Coral reefs are among the most productive ecosystems on the planet, with the primary producers at the base of the food chain (including corals) supporting their complex food webs.
Which of the following biomes has the least gross primary productivity?
The rate at which plants and other photosynthetic creatures generate organic substances in an ecosystem is referred to as primary productivity. Deserts, tundra, the open ocean, and the lakes and streams biome all have the lowest amounts of primary productivity. As a result, the right answer is ‘Open Ocean.
Which organisms provide most of the nutrient supply in the ocean?
Fish play a far more important role as contributors of nutrients to marine ecosystems than previously thought. In a pair of articles, they show that fish contribute more nutrients to their local ecosystems than any other source — enough to cause changes in the growth rates of the organisms at the base of the food web.
Why Earth has climate zones and seasons?
The earth has climate zones because of it’s varied landscapes for example ocean etc but mainly has to do with amount of sunlight that reaches a place. Seasons are created because the earth is tilted on a imaginary line called the axis.
Why are oceans least productive ecosystem?
(i) There is insufficient radiation as sunlight decreases with the increasing depth of the ocean. (ii) Oceans are nitrogen deficient which is an important nutrient for plants.
Why do you think the open ocean is not a productive ecosystem?
The open ocean is not a productive ecosystem because most of the ocean does not receive sunlight. The productive places in the ocean are the places where plankton can carry out photosynthesis (near the surface) or the bottom, where benthic organisms can feed off the detritus.
Why are oceans least productive?
The primary factors affecting the productivity of any ecosystem are sunlight, carbon dioxide, water, and nutrients. -Oceans contain lots of nutrients but they have no sufficient sunlight reaching in the deep areas, therefore, oceans have the least productivity among all ecosystems.
Which of the following is the area of least productivity?
Which of the following is the area of least productivity? Explanation: D The area of least productivity in the ocean is the area that does not receive any sunlight, so photosynthesis cannot occur. The area without any sunlight is called the aphotic zone.
Which aquatic habitat is the most productive?
Wetlands and Nature
- Wetlands are among the most productive ecosystems in the world, comparable to rain forests and coral reefs.
- Wetlands play an integral role in the ecology of the watershed.
- Wetlands’ microbes, plants and wildlife are part of global cycles for water, nitrogen and sulfur.