Question

Thiobacillus is a group of bacteria helpful in carrying out :
(1) Nitrogen fixation
(2) Chemoautotrophic fixation
(3) Nitrification
(4) Denitrification

Answer 1

Answer:

4) Denitrification

Explanation:

Nitrates are reduced to gaseous compounds of nitrogen by Pseudomonas denitrificans, Thiobacillus denitrificans, Micrococcis denitrificans

NO3 → NO2 → NO → N2O → N2

Thiobacillus denitrificans is a bacteria invovled in denitrification. It's actions result in convesion of nitrates in soil to free atmospheric nitrogen.

Answer 2

Thiobacillus is a group of bacteria helpful in carrying out Denitrification

Step by step explanation:

• Nitrates are reduced by Pseudomonas denitrificans, Thiobacillus denitrificans and Micrococcis denitrificans to gaseous nitrogen compounds.
• The chemical reaction of denitrification is as follows.

        $\bold{NO_{3}\rightarrow NO_{2}\rightarrow NO \rightarrow N_{2}O \rightarrow N_{2}}$

• Thiobacillus denitrificans is a denitrification-invovolved species. It's actions lead to nitrate reduction in soil to free atmospheric nitrogen.

Hence, correct option is 4