There is a common belief in many communities across India that the Peepal tree releases oxygen day and night. However, it is important to note that this belief is not supported by scientific evidence.
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During the process of photosynthesis, plants release oxygen as a byproduct. This process occurs during daylight hours when the plants absorb sunlight and convert carbon dioxide into oxygen. However, at night, plants respire like most living organisms, including humans. This means that they take in oxygen and release carbon dioxide. Therefore, it is generally understood that plants, including the Peepal tree, do not release oxygen at night.
While some sources claim that the Peepal tree has a special type of stomata called sunken, giant, or hydathode at the lower leaf epidermis, which allows it to release oxygen at night, scientific evidence supporting this claim is lacking. Stomata are small openings on the surface of leaves through which plants exchange gases with the atmosphere. These openings close during the night to prevent water loss in most plant species. Even if the Peepal tree had unique stomata, it would not necessarily enable it to release oxygen at night.
It is important to rely on scientific research and evidence when understanding the characteristics and behaviors of trees and plants. While the Peepal tree holds cultural and religious significance in many communities, the belief that it releases oxygen at night should be understood as a cultural belief rather than a scientifically proven fact.