Ecosystem Multiple Choice Questions and Answers

11. Nitrogen fixing blue green alga

1. Clostridium
2. Rhizobium
3. Nostoc
4. Nitrosomonas

12. Which one is natures cleaner?

1. Consumers
2. Producers
3. Decomposers and Scavengers
4. Symbionts

13. Autotrophs are ............................

1. Consumers
2. Herbivores
3. Saprophytes
4. Producers

14. What is desertification?

1. Conversion of forests into desert
2. Conversion of croplands into desert
3. Conversion of grassland into desert
4. all of the above

15. Ramsar Convention refers to the conservation of ............................

1. Deserts
2. Wetlands
3. Agriculture lands
4. Forest land

16. Rain during November is more acidic than monsoon rain due to

1. dissolved CO2
2. dissolved SO2
3. dissolved NO2
4. none of the above.

17. The word Biophilia was coined by

1. Dr. Hackel
2. Dr. Johanssen
3. Dr. Benjamine
4. E. O. Wilson

18. An ecosystem gradually merges with an adjoining one through a transitional zone is called the ............................

1. Ecological niche
2. ecological footprint
3. ecotone
4. shore effect

19. Study of inter-relationship between organisms and their environment is

1. Ecology
2. Ecosystem
3. Phytogeography
4. Ethology

20. The phenomenon of occurrence of additional species found in the ecotone or transitional zone between adjoining ecosystems is known as ............................

1. Edge effect
2. Root effect
3. Raman effect
4. Coolidge effect