Which statement is true for photosynthesis? Producers use it. Consumers use it. Scavengers use it. Decomposers use it.
The Correct Answer and Explanation is :
The correct statement is: Producers use it.
Explanation:
Photosynthesis is the process by which plants, algae, and some bacteria (known as producers or autotrophs) convert light energy, typically from the sun, into chemical energy stored in the form of glucose (a sugar). This process occurs primarily in the chloroplasts of plant cells and involves the pigment chlorophyll, which absorbs light energy.
The general formula for photosynthesis is:
[
6CO_2 + 6H_2O + light\ energy \rightarrow C_6H_{12}O_6 + 6O_2
]
In this reaction, carbon dioxide (CO₂) from the atmosphere and water (H₂O) from the soil are used by the plant to produce glucose (C₆H₁₂O₆), which serves as an energy source for the plant. Oxygen (O₂) is released as a byproduct.
Why only producers use photosynthesis:
- Producers (autotrophs), such as plants, algae, and certain bacteria, are the primary organisms that perform photosynthesis. These organisms are capable of creating their own food using light energy. Through this process, they not only provide energy for themselves but also serve as the base of the food chain by creating organic molecules that other organisms can consume.
- Consumers (heterotrophs), such as animals, do not perform photosynthesis. Instead, they rely on consuming plants (or other animals that have eaten plants) to obtain the glucose and energy they need. These organisms obtain energy indirectly by feeding on producers or other consumers.
- Scavengers and decomposers, such as vultures and fungi, also do not perform photosynthesis. Scavengers feed on dead organisms, and decomposers break down organic matter into simpler substances. Neither group creates their own energy through photosynthesis, but rather obtain energy by consuming organic material from other organisms.
In conclusion, photosynthesis is a critical process carried out by producers, as it forms the foundation of energy flow in ecosystems, supporting nearly all life on Earth.