Kit Library / Science / Biology

⚡ Topic Learning Kit

Photosynthesis

English 17 leveled MCQs 17 flashcards 7 games Free

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💡 Key Idea

The Core Equation of Life

Plants cook their own food.

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. It is the foundation of almost all life on Earth.

↳ Photosynthesis turns light, water, and CO₂ into food and oxygen.

📖 Definition

What Exactly Is Photosynthesis?

Photo = light, synthesis = make.

Photosynthesis is the biochemical process where autotrophs use sunlight to synthesise glucose from carbon dioxide and water, releasing oxygen as a by-product.

↳ It is the light-driven making of food from simple raw materials.

⭐ Important Fact

Where It Happens: The Chloroplast

Tiny green factories inside cells.

Photosynthesis occurs in chloroplasts, organelles found mainly in mesophyll cells of leaves. Chloroplasts contain the green pigment chlorophyll, which absorbs light energy.

↳ Chloroplasts are the sites; chlorophyll is the light-catcher.

📖 Smart notes

What you'll study, topic by topic

1

Photosynthesis: How Plants Make Food

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose, using carbon dioxide and water and releasing oxygen. It occurs in chloroplasts an...

  • Photosynthesis converts light energy into chemical energy in glucose.
  • Overall equation: 6CO₂ + 6H₂O + light → C₆H₁₂O₆ + 6O₂.
  • Occurs in chloroplasts, mainly in leaf mesophyll cells.

~8 min · full explanation, examples & memory tricks in the app

❓ Leveled MCQ practice

Try the smart MCQs from this kit

17 questions laddered from warm-up to topper-level, each with an explanation. A taste:

What is the primary purpose of photosynthesis in plants?

Beginner
A To release energy from food B To produce food (glucose) using sunlight C To absorb water from the soil D To transport nutrients throughout the plant
Show answer & explanation

To produce food (glucose) using sunlight

Photosynthesis is the process by which plants make their own food (glucose) using sunlight, carbon dioxide, and water.

Which of the following is NOT a raw material required for photosynthesis?

Beginner
A Sunlight B Oxygen C Water D Carbon dioxide
Show answer & explanation

Oxygen

Oxygen is a product of photosynthesis, not a raw material. The raw materials are carbon dioxide, water, and sunlight.

In which organelle does photosynthesis take place?

Beginner
A Ribosome B Mitochondria C Nucleus D Chloroplast
Show answer & explanation

Chloroplast

Photosynthesis occurs in the chloroplasts, which contain the green pigment chlorophyll.

What is the role of chlorophyll in photosynthesis?

Intermediate
A It breaks down water B It absorbs light energy C It stores glucose D It releases oxygen
Show answer & explanation

It absorbs light energy

Chlorophyll is the pigment that absorbs light energy, which is then used to drive the reactions of photosynthesis.

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