Ecosystem MCQ Questions and Answers for Practice

1. The term Ecology was coined by

1. A.G.Tansley
2. Earnst Haeckel
3. Aristotle
4. Linnaeus

2. The conversion of ammonia to nitrate is known as ............................

1. ammonification
2. nitrification
3. denitrification
4. all of these

3. Organisms which depened on Producers for nutrition are called

1. Autotrophs
2. Saprophytes
3. Consumers
4. Xerophytes

4. The inherent ability of organisms to reproduce and multiply is called

1. C value
2. biotic potential
3. carrying capacity
4. K value

5. An example of one way ecological cycle is

1. carbon dioxide cycle
2. water cycle
3. energy cycle
4. oxygen cycle

6. The animal which consumes decaying organic matter is ............................

1. Carnivore
2. Detritivore
3. Herbivore
4. Producers

7. Sulphur bacteria are examples of

1. Carnivores
2. Heterotrophs
3. Saprophytes
4. Autotrophs

8. ............................ is an example of bottom feeders.

1. Cat fish
2. Frog
3. Snake
4. Tadpole

9. The largest brackish water lake situated in Asia is in Orissa. Which is the lake?

1. Chilka lake
2. Vembanad lake
3. Woolar lake
4. Dal lake

10. The presence of which is necessary for photosynthesis

1. Chloroform
2. Chlorophyll
3. Phosphorus
4. Polymer

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