OSE 7.4 - Lessons 1-5 Test

What is the primary role of photosynthesis in plants?

• A. Producing oxygen for animals
• B. Breaking down food for energy
• C. Recycling nutrients in the soil
• D. Converting light energy into food

What is the main source of carbon in food molecules produced by plants?

• A. Water
• B. Soil nutrients
• C. Carbon dioxide
• D. Oxygen

A molecule made up of amino acids is?

• fat
• carbohydrates
• proteins
• food molecules

The growth of plants without nutrients from soil

• hydroponics
• cellular respiration
• energy
• mitochondria

A green organelle, present in plant cells, where photosynthesis takes place

• chloroplasts
• mitochondira
• glucose
• producer

Which of these are plant inputs for photosynthesis?

• water
• carbon dioxide
• sunlight
• oxygen

Where does the water enter a plant?

• through the roots
• through the stems
• through the leaves

What is the name of the simple sugar that is produced in photosynthesis?

• sucrose
• dextrose
• glucose
• lactose

Where does photosynthesis take place?

• the leaves
• the roots
• the stems

What are stomata?

• fruits
• little holes on the underside of the leaf surface
• tiny root hairs
• another word for chloroplasts