Arrange the following features related to decomposition cycle in a terrestrial ecosystem in correct sequence?
(A) Fallen leaves eaten by insects and animals
(B) Trees grow in the soil
(C) Some nutrients leach into the soil
(D) Decomposition by earthworm and bacteria etc.
Choose the correct answer from the options given below.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (B), (A), (D), (C)
(B) Trees grow in the soil — first. The trees make the organic matter, and their fallen leaves become the detritus.
(A) Fallen leaves eaten by insects and animals — second. Detritivores feed on the dead leaves and break them into smaller pieces (fragmentation).
(D) Decomposition by earthworm and bacteria etc. — third. Bacterial and fungal enzymes break the detritus down into simpler inorganic substances.
(C) Some nutrients leach into the soil — last. Water-soluble nutrients set free by decomposition go down into the soil, where the trees take them up again.