What is incorrect about ecosystem?
1. It can vary from small sized pond to large sized sea
2. It may be anthropogenic in origin
3. It may be temporary or Permanent
4. It involves the function of flow of energy but not recycling of nutrients
Subtopic:  Introduction |
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Which one of the following is a characteristic feature of a cropland ecosystem?
1. Least genetic diversity
2. The absence of weeds
3. Ecological succession
4. The absence of soil organisms
Subtopic:  Introduction |
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Which one of the following is one of the characteristics of a biological community?

1. Stratification 2. Natality
3. Mortality 4. Sex-ratio
Subtopic:  Introduction |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology