Question

Who proposed cosmic panspermia theory?
A. Arrhenius
B. Helmholtz
C. Spallanzani
D. Pasteur
E. Richter

Answer 1

Hint: "Panspermia” means "seed everywhere”.
Panspermia is defined as the theory in which microorganisms or biochemical compounds from space are responsible for the starting of life on Earth and potentially in several pieces of the universe where reasonable climatic conditions exist.

Complete step by step answer:
-Arrhenius: This theory was proposed by Arrhenius, whose work won him the Nobel Prize for Chemistry in 1903. In the twentieth century, Swedish scientist and Nobel laureate Svante Arrhenius estimated that bacterial spores, pushed through space by light weight, were the seeds of life on Earth. The essential point, which deals with the origin of life on Earth, is known as panspermia
-Helmholtz: He was important for an expanding German base of allies of Richter and Kelvin and the unceasing life-filled universe. He notices that meteorites contain organic molecules and comets appear to be made out of hydrogen and carbon.
-Richter: Hermann Richter was a German physician. He was the first to revive panspermia in light of these new considerations, and first to name it consequently.
-Pasteur: In his experiments, he completely exposed the possibility of “spontaneous generation”, that life could emerge out from inert matter. As Rudolph Virchow, the later physician said that “Omnis cellula e cellular” which means "all cells come from cells”
-Spallanzani: He suggested that microbes move through the air and that they could be destroyed, through boiling.
Hence, the correct answer is option (A) Arrhenius.

Note: In 1903, Arrhenius announced in his article "The Distribution of Life in Space", that minute kinds of life frequently proliferated in space, driven by the radiation pressure from stars.
Arrhenius also determined the time it might take for an terrestrial spore to succeed in Pluto is about 4 months.