Higher Plants Photosynthesis – C4 Pathways:
1. Which enzyme is a major component of the bundle sheath cells?
A. PEPcase
B. PEP
C. RuBisCO
D. PEP carboxylase
Answer: C
2. Which of these is not a 4-carbon compound?
A. Aspartic acid
B. OAA
C. Malic acid
D. PGA
Answer: D
3. Which of these are not present in mesophyll cells?
A. OAA
B. PEP carboxylase
C. PEPcase
D. RuBisCO
Answer: D
4. Which of these is the primary carbon dioxide acceptor in the Hatch and Slack pathway?
A. PEP
B. PGA
C. OAA
D. PEPcase
Answer: A
5. What is the arrangement of cells in plants showing Kranz anatomy?
A. Tapered
B. Irregular
C. Wreath
D. Triangular
Answer: C
6. Which of the following is false regarding the bundle sheaths of plants showing Kranz anatomy?
A. They lack chloroplasts
B. They are layered around the vascular bundles
C. They have thick walls
D. They lack intercellular spaces
Answer: A
