Photosynthesis In Higher Plants Question 138
Question: Assertion : Plants utilizing first RuBP in $ CO_2 $ fixations are called $ C_3 $ plants. Reason : Plants utilizing first PEP in $ CO_2 $ fixations are called $ C_4 $ plants.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: B
Solution:
Plants that utilize primarily RuBP to fix $ CO_2 $ , which results in the formation of the three-carbon compound 3-PGA, are called $ C_3 $ plants.
Hatch and Slack proposed a new pathway of $ CO_2 $ fixation via the carboxylation of PEP.
Because the products are four-carbon compounds, plants exhibiting this pathway are referred to as $ C_4 $ plants.
BETA
