According to the "Theory of special creation":
Important Questions on Evolution
(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct?
Assertion (A): There is a sufficient reason to believe that first cells on the planet lived in an atmosphere lacking oxygen.
Reason (R): Thus even all living organisms retain the enzymatic mechanism to completely oxidise glucose without the help of oxygen.
The correct option among the following is:
Give one significant contribution of the following scientist.
Wallace
The main concepts of two theories regarding the origin of life on earth are given. Arrange them in the following table. Write the name of theories as title.
(i) Life has originated in some other planet in the universe,
(ii)Changes occurred in the chemical substances in water, under specific conditions of the earth.
(iii) Organic substances identified in meteors supports this theory,
(iv) Life originated in the Ocean.
| A | B |
(i) Formation of protobionts
(ii) Synthesis of organic monomers
(iii) Synthesis of organic polymers
(iv) Formation of DNA-based genetic systems
