Ecology and Environment
Character of a stable community is that it
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Single Choice
Which one of the following exhibits least productivity?
ASalty marshes
BGrasslands
COpen oceans
Correct Answer
DCoral reefs
Solution
In oceans, there are lots of nutrients but no sufficient sunlight is available in deep areas hence, oceans have the least productivity. Grasslands are less productive ecosystem with annual productivity of 200−1000 gm/m2. Maximum productivity can be seen in coral reefs followed by estuaries. Salt marshes are estuaries where brackish and salt water mix. Salt marsh plants(halophytes) are salt tolerant and adapted to water levels that fluctuate with tides. Tides carry in the nutrients that stimulate plant growth in marshes.
So, the correct answer is 'Open oceans'.
SIMILAR QUESTIONS
Ecology and Environment
Which one of the following is the most productive ecosystem?
Ecology and Environment
Which of the following statements describe natural extinction? (i) Extinctions abetted by human activities (ii) Slow replacement of existing species (iii) Also known as background extinction (iv) A small population is most likely to be extinct
Ecology and Environment
An ecosystem which can be easily damaged but can recover after some time if damaging effect stops, will be having.
Ecology and Environment
During the stages of succession in a given ecosystem, the following changes in characteristics may be observed. Characteristic Stages in ecosystem development Stages in ecosystem development Early Late A. Total organic matter Low High B. Species diversity Low High C. Size of organism Small Large D. Productivity Low High E. Food chains Short Long Which one of the characteristics, A, B, C, D or E is responsible for the apparent high degree of stability associated with a climax ecosystem?
Ecology and Environment
Two species competing for the same resource can avoid competition by choosing different habits. This phenomenon is called______ and was supported by _______ .
Ecology and Environment
Why are oceans least productive?
Ecology and Environment
Primary productivity varies from ecosystem to ecosystem. Explain?
Ecology and Environment
Highest annual net primary productivity is of
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