Evolution

Question 1

How old is Universe

Answer 1

20 bya

Question 2

______ comprises the Universe

Answer 2

Huge cluster of galaxies

Question 3

How old is earth

Answer 3

4.5 bya

Question 4

What were released from molten mass covered the surface of earth

Answer 4

Water vapour, methane, CO2, NH3

Question 5

Life appeared

Answer 5

500 m yrs after earth
4 bya

Question 6

Panspermia
Who?
What?
Units of life called?
Fav idea of?

Answer 6

+Early greek thinkers
+Units of life got transferred to. different planets including earth
+ Spores
+Astronomers

Question 7

Theory of spontaneous generation
•belief
•proved wrong by
Theory of biogenesis
•life comes from
•pre-sterilised flasks
Open air flasks

Answer 7

*life came from decaying and rotting material like mud straw
*Louis Pasteur
*Life comes from pre existing cells
*Life did not come from killed yeast
*New living org arose from killed yeast

Question 8

Life from pre existing non living org molecules chemical evolution
* Proposed by
*Molecules like
*Life formation was proceeded by

Answer 8

*Oparin of Russia and haldane from England
* Rna protein etc
*Chem evolution

Question 9

*condition on earth
*Similar cond created by
*Electric discharge in a closed flask containing
*Obs formation of
*What aa
*In similar exp, others obs
*Ratio of ch3:NH3:h2
*1st life

Answer 9

• high temperatures, volcanic storms, reducing atmosphere containing (ch4, NH3)
• American scientist, SL Miller in 1953
  *Closed flask containing ch4 h2 NH3 and water vapour at 800°C
  *Formation of amino acids
  (AAG) Alanine aspartic acid glycine
  *Sugar, nitrogen bases, pigment and fats
  *2:1:2
  *Water

Question 10

1st non cellular forms of life
They were?

Answer 10

3 bya / 3000 mya
Rna protein pollysaccaride

Question 11

1st cellular forms of life
Which habitat?

Answer 11

2 bya / 2000 mya
Water ( aquatic)

Question 12

1st auto trophic org

Answer 12

Chemo autotrophs
Never released O2

Question 13

Theory of special creation
1.
2.
3.

Answer 13

1. All living org were created as such
2. Diversity was always same since creation and will remain same in future
3. The earth is about 4000 years old

Sea voyage

Question 14

Sea voyage
*Ship
*By
* Conclusion

Answer 14

• HMS beagle
• Charles Darwin
• Existing living forms share similarities to varying degrees not only among themselves but also w life forms that existed mya