5. Which of the following is the general equation for photosynthesis?
A. C6H12O6 + 6CO2 — 6CO2 + 6H2O + energy
B. 6CO2 + 6H2O - C6H12O6 + 602 + energy
C. C6H12O6 + 6CO2 + energy - 6CO2 + 6H2O
D. 6CO2 + 6H2O + energy - C6H12O6 + 602

6. Which of the following best explains why planting trees and putting up urban
gardens can help prevent global warming?
A. Plants perform photosynthesis.
B. Plants produce oxygen needed by human beings to survive.
C. Plants absorb carbon dioxide that contributes to the rising of earth's
temperature.
D. Plants release oxygen and perform transpiration.

7. Which structure allows carbon dioxide to enter the leaves?
A. stroma
B. stomata
C. cilia
D. nuclear pore
8. Water reaches the leaves of the plants through vascular tissues called
A. phloem
B. xylem
C. meristem
D. all of these
9. Where does the dark reaction of photosynthesis occur?
A. in the cristae
B. in the stroma
C. in the thylakoids
D. in A&C​