Origin of Life

IMPORTANT

Origin of Life: Overview

The origin of life is considered a unique event in the history of the universe. This topic highlights the theories and experiments related to the origin of life.

Important Questions on Origin of Life

EASY
IMPORTANT

Name the hypothesis proposed by Kant to explain the origin of the solar system, whether it is biogenesis or Nebular?

EASY
IMPORTANT

Nebular hypothesis is proposed by Lemaitre.

MEDIUM
IMPORTANT

Explain the Nebular hypothesis.

HARD
IMPORTANT

In Miller-Urey experiment, the ratio of the methane, ammonia and hydrogen was 

MEDIUM
IMPORTANT

Panspermia hypothesis and biogenesis are the same.

HARD
IMPORTANT

Which theory states that life originated from the precursors present in space?

HARD
IMPORTANT

Follow the three column matching and find out the correct combinations

S. No Item Component Equivalent to
I) Primordial atmosphere H2, H2O, CH4, NH3 Reducing atmosphere
II) Spark chamber Electrodes Lightning
III) Condenser Cool water Simulation of rain
IV) Aqueous solution Amino acids Chemical origin of life

EASY
IMPORTANT

Theory of abiogenesis was conclusively disproved by

MEDIUM
IMPORTANT

Which of the following is not the work of the mentioned scientist?
a) Georges Lemaitre first suggested the Big Bang Theory in the 1920 s
b) Solar System originated from a nebula was first proposed by Johannes Kepler
c) Haldane proposed that the primordial sea served as a vast chemical laboratory powered by solar energy
d) Louis Pasteur showed that in pre-sterilised flasks, life came from killed yeast while in another flask open to air, new living organisms did not arise from 'killed yeast'.

MEDIUM
IMPORTANT

The most accepted theory, named big-bang theory is proposed by Abbe Lemaitre in 1931.

EASY
IMPORTANT

Fill in the blank with the correct option provided in the bracket.

The first oxygenic photosynthetic organisms were _____(Mycoplasma/Rhodobacter/Cyanobacteria).

MEDIUM
IMPORTANT

Fill in the blank with the correct option provided in the bracket.

'Theory of Biogenesis' was supported by _____(Louis Pasteur/Lamarck/Weisman).

EASY
IMPORTANT

Oxygen or Nitrogen was absent in the atmosphere of primitive earth?

MEDIUM
IMPORTANT

Name the single landmass from which different continents have originated.(Pangaea/Panthalassa/Galapagos)

EASY
IMPORTANT

What kind of atmosphere was existing on primitive earth?

EASY
IMPORTANT

Which of the following theory states that, the life originated on the earth from non-living matter?

EASY
IMPORTANT

The prebiotic atmosphere of the earth was _____.

EASY
IMPORTANT

Meteorites struck the barren earth and cosmozoa were released which helped in the development of creatures. This was explained by 

EASY
IMPORTANT

According to cosmozoic theory:

EASY
IMPORTANT

The theory of panspermia is also called