Which theory arguments that life on earth came from outer space?
Abiogenesis
Panspermia
Endosymbiosis
Spontaneous Generation
Related Questions
Which of the following was NOT a necessary step in the origin of life?
Synthesis of organic monomers
Formation of protobionts
Development of photosynthesis
Formation of DNA-based genetic systems
The …A… from the sun broke up water into hydrogen and oxygen and the …B… escaped. Oxygen combined with ammonia and methane to form …C… . CO and others. The ozone layer was formed. As it cooled, the water vapour fell as rain, to fill all the depressions and form …D… Choose the correct option for A,B,C and D to complete the given paragraph, to NCERT textbook
A-IR rays, B-lighter , C-water, D-oceans
A-UV rays, B-lighter , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
Which of the following is a critical argument against the theory of panspermia related to the origin of life on Earth?
Meteorites have been found to contain organic molecules.
Life on Earth shares a common genetic code.
Microbial life has been found in extreme environments on Earth.
The harsh conditions of space, including radiation and extreme temperatures, would likely destroy any known life forms during interstellar travel.
The first non-cellular form of life could have originated
3 billion years back
2 billion years back
4 billion years back
1 billion years back
Urey –Miller’s experiment mixture had the following except
Methane
Hydrogen
Water vapour
Origin of life as a result of chemical evolution was properly explained by
I. Fox II. Oparin
III. Wateson IV. Haeckel
V. Mendel VI. Crick
Choose the correct option
I and II
III and IV
V and VI
Only II
Select the wrong statements: I. Swan-neck flask experiment was performed by Louis Pasteur, II. Louis Pasteur is famous for germ theory of disease, III. Louis Pasteur disapproved spontaneous theory forever, IV. Cosmozoic theory of origin of life was proposed by Richter, V. Theory of catastrophism was given by Georges Cuvier. Choose the correct option
I and II
III and IV
I and V
None of the statements are wrong
First life on the earth originated from non-living matters has been explained by
Theory of biogenesis
Theory of abiogenesis
Theory of special creation
Theory of extraterrestrial origin
In which era, life was absent?
Archaeozoic
Palaeozoic
Proterozoic
Azoic
Which gas was likely ABSENT in the early Earth's atmosphere according to the Oparin-Haldane hypothesis?
Methane ()
Ammonia ()
Water vapor ()
Oxygen ()
