Photosynthesis Grade 11

Plants use oxygen___

• Continuously

• During the day only

• During the night only

Animals can not carry out photosynthesis because they lack___

• Mitochondria

• Ribosomes

• Chloroplasts

Which of these describe photosynthesis?

• It requires energy from the sun

• It requires energy from food

• It releases energy from food

What is the main pigment in green plants?

• Chloroplasts

• Chlorophyll

• Ribosomes

During photosynthesis, producers convert energy from the sun into___

• Electrical energy

• Chemical energy

• Mechanical energy

Plants provide animals with___

• Food and O2 (oxygen)

• Food

• Carbon dioxide

Why do some leaves turn from green to red, orange or yellow in the fall?

• Chlorophyll changes colours in cool weather

• Chlorophyll is broken down and is stored

• Chlorophyll leaks out of the leaves

Which plant pigment traps most of the light energy used in photosynthesis?

• Carotene

• Chlorophyll

• Betadine

Which is the process plants use to make food?

• Respiration

• Carbon dioxide

• Photosynthesis

The interior space of the chloroplast is called:

• Lamellae
• Grana
• Stroma
• Thylakoids