Photosynthesis-In-Higher-Plants Question 245

Question: The scientist, who proved that bacteria use $ H_2S $ gas and $ CO_2 $ to synthesise carbohydrate, is:

Options:

A) Van Niel

B) Ruben

C) Jean Senebier

D) Julius Robert Mayer

Show Answer

Answer:

Correct Answer: A

Solution:

[a] In 1930 C.B.

Van Niel proved that, sulphur bacteria use $ H_2S $ (in place of water) and $ CO_2 $ to synthesise carbohydrates as follows : $ 6CO_2+12H_2S\to C_6H_{12}O_6+6H_2O_2+12S $ This led Van Niel to the pastulation that in green plants, water ( $ H_2O $ ) is utilised in place of $ H_2S $ and $ O_2 $ is evolved in place of sulphur (S).

He indicated that water is the electron donor in photosynthesis.