The diagram shows a summary of photosynthesis.
Which substance is Y?
a
glucose
b
H2O
c
O2
d
CO2
c) O2
To determine which substance is represented by Y in the diagram of photosynthesis, we need to understand the process of photosynthesis and identify the role of each substance involved.
Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, water, and carbon dioxide into glucose and oxygen. It takes place in the chloroplasts of plant cells.
The substances involved in photosynthesis are as follows:
a) Glucose: This is the end product of photosynthesis, produced by combining carbon dioxide and water with the help of sunlight and chlorophyll. Glucose is an energy-rich organic compound that plants use as a source of energy.
b) H2O (Water): Water is one of the reactants in photosynthesis, and it is split during the light reaction of photosynthesis to release oxygen and provide electrons for the synthesis of glucose. Water provides the necessary hydrogen and oxygen atoms for the formation of glucose.
c) O2 (Oxygen): Oxygen is a product of photosynthesis and is released into the environment. It is essential for aerobic respiration in organisms, including plants, animals, and humans. Oxygen is also necessary to support life on Earth.
d) CO2 (Carbon Dioxide): Carbon dioxide is taken in by plants during the process of photosynthesis. It is converted into glucose by incorporating carbon atoms into the glucose molecule. Carbon dioxide is obtained from the atmosphere.
By examining the diagram, we can see that Y represents O2, which is oxygen. Oxygen (O2) is released as a byproduct of photosynthesis.
Therefore, the correct answer is: c) O2