Q. No.Which of the following is true regarding early earth?
1. Earth was supposed to have been formed about 4.5 billion years back.
2. The atmosphere of early earth was full of water vapour.
3. The surface of earth was covered by water vapour, methane and carbondioxide, the three compounds, formed from molten mass.
4. The UV rays from the sun broke up water into hydrogen and oxygen and lighter oxygen escaped.
…….combined with ….. and….. to form water, CO2 and others.
(1) Oxygen, ammonia and Methane
(2) Hydrogen, ammonia and Methane
(3) Hydrogen, Methane and ammonia
(4) Oxygen, Methane and hydrogen
Which of the following theory is dismissed by Louis Pasteur's Experiment?
(1) Theory of panspermia
(2) Theory of spontaneous generation
(3) Theory of special creation
(4) Catastrophic theory
Oparin of…… and Haldane of ….. proposed that the first form of life could have come from pre existing …………
(1) Russia, England, non-living inorganic molecules
(2) England, Russia, living organic matter
(3) Russia, England, non-living organic molecules
(4) England, Russia, life
The formation of diverse organic molecules from inorganic molecules was proposed by
(1) L. Miller
(2) Oparin
(3) Haldane
(4) Both B and C
Which of the following conditions was not there in the Earth at the time of origin of first life form?
(1) High Temperature
(2) Volcanic storms
(3) Reducing atmosphere
(4) Oxygen,Methane and Ammonia in the environment
Which of the following statements is true?
(1) A British scientist created the conditions proposed by Oparin and Haldane in a closed flask with temperature of 800 degrees Celsius in electric discharge along with gases methane, hydrogen, ammonia and water vapour and observed the formation of amino acid.
(2) Some similar experimental setups were also prepared by other scientists and the formation of sugar, nitrogenous bases, pigments and fats were recorded.
(3) The processes of chemical evolution were occurring elsewhere in space was concluded by the analysis of content of gaseous cloud.
(4) The first self-replicating metabolic capsule of life arose 3 billion years back.
The first non cellular form of life
(1) Could have originated 3 billion years back.
(2) Were small molecules like RNA, proteins and Polysaccharides etc.
(3) Didn't have property to reproduce perhaps
(4) Both B and C
The first form of life were not
(1) Single cells
(2) in water environment only
(3) originated till about 200million years ago
(4) Both A and B
According to theory of special creation which one is wrong?
(1) All living organisms were created as such
(2) Diversity was same since the creation.
(3) Diversity will increase as the changes in the environment come.
(4) The Earth is about 4000 years ago.
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