Botany-(general)
NEET Botany (general) MCQ Question
Type: MCQ-numerical-Easy-Class 11
If half of the total carbon dioxide fixation on Earth is carried out by algae, and the total carbon dioxide fixation is 200 gigatonnes per year, how much carbon dioxide do algae fix annually?
A
100 gigatonnes
B
50 gigatonnes
C
150 gigatonnes
D
200 gigatonnes
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, at least half of the total carbon dioxide fixation on Earth is carried out by algae. Therefore, if the total fixation is 200 gigatonnes, algae fix 100 gigatonnes.
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