Question : What happens to the decomposition rate when detritus is rich in lignin and chitin?

Option 1: It is negligible.

Option 2: It is faster.

Option 3: There is no movement.

Option 4: It is slower.

Question : Identify the step that is not a part of decomposition.

Option 1: Leaching

Option 2: Humification

Option 3: Catabolism

Option 4: Soil erosion

Question : Xenobiotics which are inherently resistant to microbial attack are called as:

Option 1: Biodegradable

Option 2: Persistent

Option 3: All of the given options

Option 4: Recalcitrant

Question : Select the option that expresses the given sentence in reported speech.
The teacher says, “Every action has an equal and opposite reaction.”

Option 1: The teacher says every action had an equal and opposite reaction.

Option 2: The teacher said that every action had an equal and opposite reaction.

Option 3: The teacher said that every action has an equal and opposite reaction.

Option 4: The teacher says that every action has an equal and opposite reaction

Question : ______ affects the rate of humus formation of soil.

Option 1: Flora and fauna

Option 2: Time

Option 3: Temperature

Option 4: Parent rock