Origin Of Life And Biological Evolution Test

Origin Of Life And Biological Evolution

This is online test 03 for CBSE class 12 Biology Evolution (Origin of life and biological evolution).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter Meat was not spoiled, when heated and kept sealed in a vessel
  • A
    Larva could appear in decaying organic matter
  • B
    Jean Baptiste Van Helmont
  • C
    Microbes appeared form unsterilized organic matter
  • D
    Microbes did not appear in stored meat
    Correct
2
The diagram represents Miller experiment. Choose the correct combination of labeling.
Question 2 figure 1
  • A
    A – electrodes, B – NH3 + H2 + H2O + CH4, C – steam, D – Vacuum, E – U trap
  • B
    A – electrodes, B – NH4 + H2 + CO2 + CH3, C – hot water, D – Vacuum, E – U Trap.
  • C
    A – electrodes, B – NH3 + H2O, C – hot water, D – tap, E – U trap
  • D
    A – electrodes, B – NH3 + H2 + H2O + CH4, C – cold water, D – Vacuum, E – U Trap.
    Correct
3
What was the mixture of gases used in chamber marked A?
Question 3 figure 1
  • A
    Methane\(\left( {C{H_4}} \right)\) v, ammonia\(\left( {N{H_3}} \right)\) , hydrogen \({H_2}\) , and water \({H_2}O\)
    Correct
  • B
    Oxygen \({O_2}\), ozone \({O_3}\), hydrogen \({H_2}\), and water \({H_2}O\)
  • C
    Oxygen \({O_2}\), ammonia \(\left( {N{H_3}} \right)\), hydrogen \({H_2}\), and water \({H_2}O\)
  • D
    Oxygen \({O_2}\), ozone \({O_3}\), hydrogen \({H_2}\), and water \({H_2}O\)
4
Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
  • A
    Both Assertion and Reason are false statements
  • B
    Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
    Correct
  • C
    Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion
  • D
    Assertion is true statement but Reason is false
5
Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.
  • A
    Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion
  • B
    Both Assertion and Reason are false statements
  • C
    Assertion is true statement but Reason is false
    Correct
  • D
    Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
6
What was the resultant found in place marked E?
Question 6 figure 1
  • A
    Some fatty acids and organic acids
  • B
    Some amino acids as glycine and alanine
    Correct
  • C
    Glucose, fatty acids and lipids
  • D
    Organic esters only
7
Big bang theory try to explain
  • A
    The origin of universe
    Correct
  • B
    The origin of stars
  • C
    The origin of earth
  • D
    The origin of life on earth
8
Some ancient organism still survive on earth but most of them have become extinct this is because of
  • A
    Presence of special genes
  • B
    All of the above
  • C
    Absence of senescence gene
  • D
    Presence of characteristics which enable them to survive
    Correct
9
Assertion: Organic evolution explains that new species originated from pre-existing life forms and there is gradual variation in trait to adjust in particular habitats. Reason: existing living forms share similarities to various degrees among themselves and also with life forms that existed millions of years ago.
  • A
    Assertion is correct but reason is incorrect
  • B
    Both assertion and reason are incorrect
  • C
    Both assertion and reason are correct
    Correct
  • D
    Reason does not explain the assertion correctly
10
Which of the following statements are correct about origin of earth? a. There was no atmosphere on early earth. b. Water vapour, methane, carbon dioxide and ammonia are released from molten mass covered the earth. c. Oxygen gas is released from plants during photosynthesis.
  • A
    Statement ‘a’ and ‘c’ are correct
  • B
    All statements are correct
  • C
    Statement ‘a’ and ‘b’ is correct
    Correct
  • D
    Statement ‘b’ and ‘c’ is correct