What was the source of hydrogen for the first photosynthetic organisms?
Correct answer: D. Hydrogen sulphide
- A. Water
- B. Hydrogen present in soil
- C. Hydrogen sulphate
- D. Hydrogen sulphide
Explanation
Correct option: D , Early photosynthetic organisms used hydrogen sulfide as a source of hydrogen.
Last updated
About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
Practise Evolution
814 free Evolution MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A change in the frequency of alleles that occurs by chance is called:
A gas absent during the pre-biotic environment was:
A gene pool is disturbed by which of the following?
A group of interbreeding individuals
A group of interbreeding individuals belonging to a particular species and sharing a common geographic area is called: