An inverted pyramid of biomass can be found in which ecosystem?

1.	Forest	2.	Marine
3.	Grassland	4.	Tundra

Which of the following is not a producer?

Which of the following ecosystems is most productive in terms of net primary production? 

Pyramid of numbers is :
1. Always upright
2. Always inverted
3. Either upright or inverted
4. Neither upright nor inverted

Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis? 

Among the following, where do you think the process of decomposition would be the fastest?

How much of the net primary productivity of a terrestrial ecosystem is eaten and digested by herbivores? 

During the process of ecological succession, the changes that take place in communities are :
1. Orderly and sequential
2. Random
3. Very quick
4. Not influenced by the physical environment

Climax community is in a state of :
1. Non-equilibrium
2. Equilibrium
3. Disorder
4. Constant change

Among the following bio-geo-chemical cycles, which one does not have losses due to respiration? 
1. Phosphorus
2. Nitrogen
3. Sulphur
4. All of the above