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JAMB UTME - Biology - 1994

Question 1 Report

Which of the following waste products in plants is excreted through the stomata and lenticels?
Answer Details
Carbondioxide is the waste product that is excreted through the stomata and lenticels in plants. During photosynthesis, plants take in carbon dioxide from the atmosphere and use it to produce glucose and oxygen. However, during respiration, plants release carbon dioxide as a waste product, which needs to be removed from the plant's body. The stomata and lenticels are specialized structures in plants that allow for gas exchange, and carbon dioxide is one of the gases that can diffuse out of the plant's body through these structures. In contrast, alkaloids, tannins, and anthocyanins are not waste products that are excreted through the stomata and lenticels. Alkaloids and tannins are secondary metabolites that play important roles in plant defense against herbivores and pathogens, while anthocyanins are pigments that give fruits and flowers their vibrant colors.
Read lesson note on Humans And Environment (JAMB)
Read lesson note on Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)
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