Question

Which of the forest layer shown in the diagram receives the maximum sunlight?

A. Emergent layer
B. Canopy layer
C. Understory layer
D. None of the above

Answer 1

Hint:Sunlight is necessary for the plants because sunlight helps plants for performing photosynthesis by activating chloroplasts. However, different plants have different requirements for sunlight energy.

Complete answer:There is an uneven distribution of plants in a forest, this is known as stratification. Due to which different plants receive different amounts of sunlight.
Emergent layer: It is the topmost layer of forest. It consists of the top of trees that emerges from the canopy. These plants require the maximum amount of sunlight, therefore they emerge to receive the maximum possible amount of sunlight. Only the strongest and tallest plants are able to reach this level.
Canopy layer: It is the second layer of the forest. It is found at a lower level than the emergent layer. The canopy also receives a very good amount of sunlight. Usually, the plants which require moderate amounts of sunlight reach this level. The canopy forms a very thick and dense cover outside the forest. It filters the sunlight reaching the lower levels.
Understory layer: This layer is found below the canopy layer. It consists of various forms of shrubs. These plants require fair amounts of sunlight. The plants at this level receive filtered amounts of sunlight. The light is filtered by the canopy.
Thus, based on the above information this can be concluded that the emergent forest layer shown in the diagram receives maximum sunlight.

Hence, the correct answer is option (A).

Note: Stratification is the vertical distribution of different species that occupy different levels. Stratification is the structure in the form of a recognizable pattern in any spatial arrangement of the members of communities. Stratification is generally observed for the forest ecosystems.