Birbal Sahni was
Palaeobotanist
Zoologist
Ornithologist
Palaeozoologist
Related Questions
Which of the following experiment suggested that simplest living organisms could not have originated spontaneously from non-living matter?
Microbes did not appear in stored meat
Larvae could appear in decaying organic matter
Microbes appeared from unsterilized organic matter
Meat was not spoiled, when heated and kept sealed in a vessel
How did George Cuvier accounts for the extinctions in nature
Extinctions never occur there are unexplored parts of the globe where the organisms that appears to have gone extinct may still live
Extinctions occur when the slow adaptations of the organisms overtime to their environment are not quick enough to help them respond to changing conditions
Extinctions occur at random, they do not reflect God’s will
Extinctions occur due to the catastrophic events
Life cannot originate from inorganic materials now because of
Low atmospheric temperature
High degree of pollution
High atmospheric oxygen
Absence of raw materials
Oparin and Haldane’s theory is also called
Panspermia Theory
Primordial Soup Theory
Spontaneous Generation Theory
Endosymbiotic Theory
The concept that the species have changed over a long period of time is know as
Ecosystem
Spontaneous generation
Organic evolution
Genetic recombination
According to abiogenesis, life originated from
Non-living
Pre-existing life
Chemicals
Extra-terrestrial matter
Big-Bang theory attempts to explain the origin of
Earth
Solar-system
Universe
Contenents
Experimental evidence of chemical evolution was given by
Miller
Haldane
Oparin
All of the above
According to the current understanding of abiogenesis, which of the following represents the likely order of events leading to the first cells?
Polymerization → Synthesis of monomers → Protobiont formation → DNA-based genetic systems
Synthesis of monomers → Polymerization → Protobiont formation → DNA-based genetic systems
Protobiont formation → Synthesis of monomers → Polymerization → DNA-based genetic systems
DNA-based genetic systems → Protobiont formation → Polymerization → Synthesis of monomers
…A… of Russia and …B…. of England proposed that the first form of life could have come from …C… non-living organic molecule. Choose the right option for A, B and C to compete the given NCERT statement
A-Oparin, B-Haldane, C-Post-existing
A-Haldane, B-Oparin, C-Post-existing
A-Oparin, B-Haldane, C-Pre-existing
A-Haldane, B-Oparin, C-Pre-existing
