Fill in each blank with the correct word from the lesson.

1. Tiny pores on the leaf surface called _______ allow carbon dioxide to enter and oxygen to exit.
2. _______ is arguably the most important chemical reaction on Earth.
3. The key ingredient in photosynthesis is _______ — the green pigment found in special structures called chloroplasts inside leaf cells.
4. Some is broken down immediately through _______ to release energy for the plant's own activities — growing, reproducing, and defending against pests.
5. As a byproduct, they release the _______ we breathe.

Choose the best option for each question.

1. What are the raw materials for photosynthesis?
   a) Glucose and oxygenb) Carbon dioxide, water and lightc) Starch and chlorophylld) Nitrogen and sunlight
2. What is the role of chlorophyll in photosynthesis?
   a) It absorbs water from soilb) It stores glucose as starchc) It absorbs light energyd) It releases carbon dioxide
3. Through which structures do leaves exchange gases?
   a) Rootsb) Chloroplastsc) Stomatad) Veins

Write T for True or F for False in the brackets.

1. Carbon dioxide, water and light is one of the key concepts in the lesson on Photosynthesis.
2. Glucose and oxygen is the main topic of this lesson.
3. It absorbs light energy is one of the key concepts in the lesson on Photosynthesis.
4. It absorbs water from soil is the main topic of this lesson.

1. In your own words, explain what Photosynthesis means.
2. List two things you learned from this lesson on Photosynthesis.