Decomposition Cycle

Q.

Green plants of an ecosystem are called

1. producers

2. consumers

3. decomposers

4. none of the above

Q. The process of break down of detritus into smaller particles by detritivores is called ___.

1. Catabolism
2. Fragmentation
   
3. Mineralisation
4. Humification

Q. Who accepts the nutrient released in environment by decomposer?

1. Consumers
2. Producers
3. Secondary consumers
4. None of the above

Q. Which one of the following is incorrect with respect to the decomposition process?

1. Humification - leads to the accumulation of a dark coloured humus which undergoes microbial action at a very fast rate.
2. Leaching - water soluble inorganic nutrients leach to the upper layers of soil by percolation of water into soil particles.
3. Catabolism - last step of decomposition carried out by saprophytic organisms.
4. Fragmentation - Carried out by organisms such as earthworms.

Q. Match the processes involved in decompostion to its characteristics.

1. Percolate into soil
2. Done by detrivores
3. Enzymatic digestion

Q. is a process by which simplified detritus gets converted into a dark formless substance which is highly resistant to microbial action.

1. Humification
2. Mineralisation
3. Leaching