Home
Class 12
BIOLOGY
....................... years ago, earth...

....................... years ago, earth was formed.

A

4.6 million years

B

4.6 billion years

C

2.6 billion years

D

1.6 billion years

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ORIGIN AND EVOLUTION OF LIFE

    CHETANA PUBLICATION|Exercise Exercise|66 Videos

  • Organisms and Populatoins

    CHETANA PUBLICATION|Exercise EXERCISE|48 Videos

  • PLANT GROWTH AND MINERAL NUTRITION

    CHETANA PUBLICATION|Exercise Exercise|94 Videos

Similar Questions

Explore conceptually related problems

Solve the following word problems : The sum of the present ages of Manish and Savita is 31 years. 3 years ago Manish's age was four times Savita's age at that time. Find the present ages.

By choosing appropriate words given in the bracket, complete the paragraph: (cultural, agriculture, fire, brain, cro-magnon, homo sapiens, neanderthal) Evolution of upright man continued in the direction of developing its……. For the period of about 1 lakh years and meanwhile discovered the ..........Brain of man, 50 thousand years ago had been sufficiently evolved to the extent that it could be considered as member of the species ........Neanderthal man can be considered as the first example of wise-man. The ........man evolved about 50 thousand years ago afterwards, this evolution had been faster than the earlier. About 10 thousand years ago, wise man started to practice the .............It started to rear the cattle-herds and established the cities...........development took place later.

The earth's magnetic field

Hight earth orbits and low earth orbits.

The sum of reciprocals of Reshma's age (in years) 3years ago and 5 years after from now is 1/3. Find her present age.

Choose the correct alternative and write its alphabet against the sub question number: About 10 thousand years ago, ……..started to practise agriculture.

CHETANA PUBLICATION-ORIGIN AND EVOLUTION OF LIFE -Exercise
  1. The Cranial capacity of Nanderthal man was

    Text Solution

    |

  2. About 15 billion years ago, single titanic explosion occurred which is...

    Text Solution

    |

  3. ....................... years ago, earth was formed.

    Text Solution

    |

  4. Protobiogenesis refers as .....................

    Text Solution

    |

  5. According to the ........................, all the living beings on th...

    Text Solution

    |

  6. The first chemicals formed on the earth were

    Text Solution

    |

  7. The primitive sea containing molecules of organic substance free of .....

    Text Solution

    |

  8. What is considered as a landmark in the origin of life ?

    Text Solution

    |

  9. The first form of life on earth consisting of nucleic acid along with ...

    Text Solution

    |

  10. Name the island where Darwin visited while formulating the theory of N...

    Text Solution

    |

  11. The prebiotic atmosphere of the earth was............

    Text Solution

    |

  12. The sum total of genes present in all individuals of interbreeding or ...

    Text Solution

    |

  13. Which of the following theory states that, the life originated on the ...

    Text Solution

    |

  14. The struggle between organisms of different species is called............

    Text Solution

    |

  15. Recently an almost complete lower jaw of a Dryopithecus has been obtai...

    Text Solution

    |

  16. The cranial capacity of Cro-Magnon man was about...........

    Text Solution

    |

  17. The phenomenon of industrial melanism demonstrates-

    Text Solution

    |

  18. The theory of natural selection was proposed by .

    Text Solution

    |

  19. Mutation theory was proposed by which scientist?

    Text Solution

    |

  20. Name of ship by which Darwin travelled during his famous voyages.

    Text Solution

    |