Which substances are products of photosynthesis?

Photosynthesis is the biological process through which plants, algae, and some bacteria convert light energy, typically from the sun, into chemical energy stored in glucose. During this process, the organisms utilize carbon dioxide from the atmosphere and water from the soil. Through a series of chemical reactions, these substances are transformed into glucose, which serves as food for the plant, and oxygen, which is released as a by-product into the atmosphere.

The correct answer highlights that glucose and oxygen are indeed the main products of photosynthesis. Glucose provides essential energy and serves as a building block for growth, while oxygen is crucial for the survival of aerobic organisms, including humans.

In contrast, the other options contain substances that are either reactants in the photosynthesis process (like carbon dioxide and water) or incorrectly associate products (like nitrogen, which is not a product of photosynthesis). Understanding the correct inputs and outputs of photosynthesis helps clarify essential concepts in plant biology and ecosystem functioning.