Question

The figure given below shows part of the carbon cycle. K, L and M are processes that take place in the carbon cycle. Which of the following combinations represents K, L and M correctly?

• A. K-Combustion
  L - Respiration
  M - Photosynthesis
• B. K - Respiration
  L - Decomposition
  M - Photosynthesis
• C. K - Decomposition
  L - Respiration
  M - Decomposition
• D. K - Combustion
  L - Decomposition
  M - Respiration

Answer 1

The correct option is D K - Combustion

L - Decomposition
M - Respiration
The burning of the fossils fuels in the presence of air is known as combustion. The label K refers to the process of combustion.

The bacteria and the lower organisms decompose the organic matter and release carbon dioxide. This process is known as decomposition and is represented by the label L.

The green plants fix the carbon dioxide with the help of the enzymes in the chloroplast in the process of photosynthesis. The label M refers to the process of photosynthesis.

Thus, the correct answer is option D.