Question 2 :
A prediction made by a scientist based on his observation is known as
Question 3 :
Under certain conditions scientists have obtained cell-like structures. These are known as
Question 4 :
Formation of which complex molecule was noticed by Urey and Miller, when they subjected substances like $NH_3$, $CH_4$, $H_2O$ etc. to electric discharge?
Question 7 :
The idea of Natural Selection as the fundamental process of evolutionary changes was reached
Question 8 :
An experiment to prove that organic compounds were the basis of life, was performed by<br>
Question 11 :
Synthesis of amino acids to prove that amino acids were formed in primitive ocean was experimentaly proved by
Question 15 :
During origin of life, nucleoprotein gave most probably the first sign of
Question 17 :
The four elements that make up 99% of all elements found in a living system are
Question 18 :
Which of the following was most likely to have been absent in free form in the primordial atmosphere at the time of origin of life?
Question 21 :
According to spontaneous generation theory, the sequence of origin of life may be considered as
Question 22 :
The scientist related with the over throw of the "Theory of spontaneous generation" and experiment with swan-necked flask is
Question 23 :
The complex organic compounds that may have first evolved in the direction of origin of life on earth, may have been
Question 24 :
The idea that life originates from preexisting life is referred as
Question 26 : Match the scientists listed under Column 'A' with ideas listed under Column 'B'.<table class="wysiwyg-table"><tbody><tr><td>Column A</td><td>Column B</td></tr><tr><td>A. Darwin</td><td>(i) Abiogenesis</td></tr><tr><td>B. Oparin</td><td>(ii) Use and disuse of organs</td></tr><tr><td>C. Lamarck</td><td>(iii) Continental drift theory</td></tr><tr><td>D. Wagener</td><td>(iv) Evolution by natural selection</td></tr></tbody></table>
Question 28 :
In the early Earth, water and$CO_2$ were produced by the combination of$O_2$ with
Question 29 :
Who proposed that the first form of life could have come from pre-existing non-living organic molecule?<br>
Question 31 :
The most vital process for the existence of life on earth is
Question 33 :
The presence of salts (NaCl and others) in animal body fluid gives an inference that life originated in the
Question 39 :
The present day organisms dominant in the primitive reducing atmosphere are:
Question 40 :
Which of the following was not found in free form during origin of life?
Question 41 :
The different forms of interbreeding species that live in different geographical regions are called as
Question 44 :
Culture is journey of man from cave (darkness) to home (light).
Question 45 :
Below are some highlights on plant evolution. Mark the correct option which is in correct order.
Question 48 :
Which one of the following amino acid was not found to be synthesized in Miller's experiment?<br>
Question 50 :
Urey and Miller worked to prove chemical origin of life in the University of
Question 52 :
In the ancient atmosphere free nitrogen, oxygen and carbon dioxide were not present because
Question 56 :
Which one of the following is incorrect about the characteristic of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
Question 58 :
The reducing environment of the primitive earth was transformed into oxidizing environment by
Question 64 :
Which biologist gave most logical biochemical theory of origin of life?
Question 65 :
The idea of spontaneous generation that 'living things can originate spontaneously from non-living things' was
Question 71 :
The first life appeared in marine water was called as protovirus, eobiont or protocell. It was
Question 72 :
Name the feature of water which favours that life originated in it.
Question 82 :
Mark the correct match.<br>I. Origin of Life A. Cuvier<br>II. Origin of Species B. Suarez<br>III. Special Creation C. Charles Darwin<br>IV. Catastrophe D. A. I. Oparin theory
Question 83 :
During primitive times oceans contained (I) fishes only, (II) algae only, (III) water only (IV) ammonia, methane and minerals only.
Question 84 :
Which of the following amino acids were found to be synthesized in Miller's experiment?
Question 87 :
Assertion: Coacervates are believed to be the precursors of life.
Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.
Question 89 : Match the following.Identify the sequence of list II with respect to list I.<br/><table class="wysiwyg-table"><tbody><tr><td><br/></td><td>List I<br/></td><td>List II<br/></td></tr><tr><td>(A)<br/></td><td> Cosmozoic theory<br/></td><td>Aristotle<br/></td></tr><tr><td>(B) <br/></td><td> Biogenesis theory</td><td>Louis Pasteur <br/></td></tr><tr><td>(C)<br/></td><td> Theory of spontaneous generation<br/></td><td>Cuvier<br/></td></tr><tr><td>(D)<br/></td><td> Theory of catastrophism<br/></td><td>Arrhenius<br/></td></tr><tr><td><br/></td><td><br/></td><td><br/></td></tr></tbody></table><br/>
Question 90 :
Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Question 94 :
Assertion: The primitive atmosphere was reducing one, i.e., without oxygen.
Reason: In the primitive atmosphere, oxygen was involved in forming ozone.
Question 95 :
Assertion: We have lost all the direct evidence of origin of life.
Reason: The persons responsible for protecting evidences were not skilled.
Question 96 :
When earth originated, there was large amount of methane and other hydrocarbons but now in the present atmosphere it is replaced by 
Question 97 :
The conditions under which amino acid molecules might have been become bonded together to form the first protein molecules was suggested by 
Question 98 : <table class="wysiwyg-table"><tbody><tr><td><b>Column I   </b></td><td><b> Column II</b></td></tr><tr><td>A.  Cosmozoan theory</td><td>(i)  Oxidizing environment rich in autotrophs, like <i>Cyanobacteria</i></td></tr><tr><td>B.  Spontaneous generation  </td><td> (ii)  Microspheres</td></tr><tr><td>C.  Primary abiogenesis</td><td> (iii)  Hot ball of gases</td></tr><tr><td>D.  Atmosphere I   </td><td>(iv)  Oparin and Haldane</td></tr><tr><td>E.  Atmosphere III     </td><td> (v)  Panspermia</td></tr><tr><td>F.  Sydney fox  </td><td>(vi)  Abiogenesis</td></tr></tbody></table>Select the correct match from the following.<br/>
Question 99 :
Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Question 100 :
What is the correct arrangement of periods of Palaeozoic era in ascending order in geological time scale ?
Question 101 :
The question of origin of life is still unanswered because scientists are unable to know
Question 104 :
During the course of origin of life what was the sequence of substances which appeared on earth?
Question 108 :
Match the columns.<br/>            Column I                                                 Column II<br/>I.     Recent horse                                      A.  Connecting link between animals and plants<br/>II.   <i>Peripatus </i>spp                                     B.  <i> Equus</i><br/>III.  First forest                                         C.  Connecting link between annelids and                                                                                                       arthropods<br/>IV.  <i>Euglena </i>                                            D.  Devonian period
Question 110 :
Assertion: Atmosphere III (oxidizing) came into existence about 3.6 billion years ago.
Reason: Fossils, stromatolites suggest the dominance of oxygenic cyanobacteria from that age.
Question 114 :
In which respect, the heterotroph hypothesis differs from the early ideas of spontaneous generation?
Question 115 :
For the study of life, study of organization of molecules in the living matter is essential because 
