Ch 1 Eco Class 9 MCQ. We covered all the Ch 1 Eco Class 9 MCQ in this post for free so that you can practice well for the exam.
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Ch 1 Eco Class 9 Objective MCQ for Students
In the grassland, trees do not replace the grasses as a part of an ecological succession because of
A) Insects and fungi
B) Limited sunlight and paucity of nutrients
C) Water limits and fire
D) None of the above
Option c – Water limits and fire
Which one of the following is the correct sequence of the phases of biotic succession?
A) Nudation, Migration, Ecesis, Reaction, Stabilization
B) Migration, Nudation, Ecesis, Reaction, Stabilization
C) Ecesis, Migration, Nudation, Reaction, Stabilization
D) Stabilization, Reaction, Nudation, Migration, Ecesis
Option a – Nudation, Migration, Ecesis, Reaction, Stabilization
Which one of the following is the correct order of biological organization ranging from organism to biosphere?
A) Population, Ecosystem, Community, Landscape
B) Landscape, Community, Ecosystem, Population
C) Population, Community, Ecosystem, Landscape
D) Population, Landscape, Community, Ecosystem
Option c – Population, Community, Ecosystem, Landscape
Consider the following statements relating to the ecosystem. 1. The term ecosystem was first used by A.G. Tansley. 2. Those organisms which produce their food themselves are termed autotrophs. 3. Consumers consume their food through the process of photosynthesis. 4. Decomposers convert inorganic matter into organic matter. Which of the above statements is correct?
A) Only 1 and 2
B) Only 1 and 3
C) Only 2 and 4
D) Only 3 and 4
Option a – Only 1 and 2
Which of the following statements is true about Bionomics? 1. It means ‘management of life.” 2. It is synonymous with ecology. 3. It stresses the value of natural systems which influence human systems.
A) Only 1
B) Only 1 and 2
C) Only 2 and 3
D) 1, 2 and 3
Option c – Only 2 and 3
In the context of ecosystem productivity, marine upwelling zones are important as they increase marine productivity by bringing the 1. Decomposer micro-organisms to the surface. 2. Nutrients to the surface. 3. Bottom-dwelling organisms to the surface. Which of the statements given above is/are correct?
A) Only 1 and 2
B) Only 2
C) Only 2 and 3
D) Only 3
Option b – Only 2
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