Photosynthesis and Energy Transformation in Ecosystems

Flashcards covering key concepts related to photosynthesis and its role in ecosystems.

Photosynthesis

The process by which plants convert carbon dioxide and water into glucose using light energy.

Word Equation of Photosynthesis

Carbon dioxide + water → glucose + oxygen.

Chloroplasts

The site in plant cells where photosynthesis occurs.

Chlorophyll

The pigment that absorbs light energy during photosynthesis.

ATP

Adenosine triphosphate, the energy currency used by cells to power biological processes.

Oxygen Production in Photosynthesis

Oxygen is produced as a by-product during the splitting of water molecules in the light-dependent stage.

Rf Value

A ratio used in chromatography, calculated as distance moved by pigment ÷ distance moved by solvent.

Absorption Spectrum

A graph showing how much light is absorbed at different wavelengths for a specific pigment.

Action Spectrum

A graph showing the effectiveness of different wavelengths in driving photosynthesis.

Limiting Factors

Variables that restrict the rate of photosynthesis, such as light intensity, carbon dioxide concentration, and temperature.

Carbon Dioxide Enrichment

The practice of increasing CO₂ levels around plants to improve photosynthesis rates and plant growth.

Plant Growth and Photosynthesis

Higher CO₂ levels can lead to increased rates of photosynthesis and faster plant growth, subject to other limiting factors.