Biological Classification And System Of Classification Question 45
Question: Which is not true for the heterocyst of Nostoc
Options:
A) Intercalary position
B) Site of nitrogen fixation
C) Presence of polar nodules
D) $ CO_2 $ fixation ability
Show Answer
Answer:
Correct Answer: D
Solution:
$CO_2$ fixation ability: False. Heterocysts do not have the ability to fix $CO_2$.
This is because they lack the enzyme Ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO), which is necessary for the process of carbon fixation.
The primary function of heterocysts is nitrogen fixation, not carbon fixation. Hence, option D is the correct answer.
BETA
