Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
The process by which plants make their own food is called:
Respiration
Photosynthesis
Transpiration
Digestion
Photosynthesis
Photosynthesis is the vital biochemical process by which green plants, algae, and certain bacteria convert light energy into chemical energy. Using sunlight, carbon dioxide, and water, they synthesize glucose to serve as their food and release oxygen as a byproduct.
Photosynthesis is the vital biochemical process by which green plants, algae, and certain bacteria convert light energy into chemical energy. Using sunlight, carbon dioxide, and water, they synthesize glucose to serve as their food and release oxygen as a byproduct.
Think of a plant leaf as a tiny solar-powered kitchen where sunlight acts as the electricity, water and carbon dioxide are the raw ingredients, and glucose is the nutritious meal produced.
PHOTO means light and SYNTHESIS means putting togetherтАФputting things together using light!
6CO2тАЛ+6H2тАЛOSunlightтАЛC6тАЛH12тАЛO6тАЛ+6O2тАЛ тАФ Overall balanced chemical equation for photosynthesis
The process occurs inside chloroplasts using the green pigment chlorophyll to capture solar energy. This energy drives two main stages: the light-dependent reactions (which split water and produce ATP and NADPH) and the light-independent Calvin cycle (which fixes carbon dioxide into organic glucose molecules).
Photosynthesis takes place primarily in the chloroplasts of plant leaves.
Chlorophyll is the key pigment responsible for trapping light energy.
Oxygen is a vital byproduct released into the atmosphere.
Serves as the primary source of organic food for nearly all life on Earth
Maintains atmospheric oxygen levels and reduces carbon dioxide
Rate is limited by environmental factors such as light intensity, temperature, and water availability
Primary production in global ecosystems
Crop yield enhancement in modern agriculture
| Feature | Photosynthesis | Respiration |
|---|---|---|
Energy Change | Stores energy (endergonic process) | Releases energy (exergonic process) |
Gas Exchange | Consumes CO2тАЛ, releases O2тАЛ | Consumes O2тАЛ, releases CO2тАЛ |
Photosynthesis consists of two phases: light reactions occurring in the thylakoids and the Calvin cycle occurring in the stroma.
Option A (Respiration) breaks down food for energy, Option C (Transpiration) is water loss via evaporation, and Option D (Digestion) is food breakdown in animals.
B is correct тАФ Photosynthesis is the fundamental biological process by which plants manufacture their own food.
Competitive exams frequently test the products of light-dependent vs. light-independent reactions; remember that oxygen is produced during the light reaction via photolysis of water.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants