(a) Name the type of detritus that decomposes faster. List any two factors that enhance the rate of decomposition.
(b) Write the different steps taken in humification and memorisation during the process of decomposition.

Write about 'humification ' and the 'mineralisation' occurring during the process of decomposition.

Assertion: The three steps in the decomposition (fragmentation , leaching and catabolism) operate on the detritus simultaneously Reason: Humification and mineralisation occurs during decomposition in the soil.

Name the process and explain the type of nutrition found in green plants. List the raw materials required for this process. Given chemical equation of the mentioned process. (b) Write three events that occurs during this process.

Consider the following statements. A. The movement of energy is unidirectional from the higher trophic level towards the lower trophic level. B. Detritivores break down detritus into smaller particles bya a process is called fragmentation. C. Humification and mineralisation occur during decomposition in the soil. D. Decomposition is largely an oxygen-releasing process. Of the above statements:

(a) Esters are sweet smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester . Also write the names of all the substances involved in the process of esterification. (b) State any two uses of esters.