Home
Class 12
BIOLOGY
Major radiation of mammals, birds and po...

Major radiation of mammals, birds and pollinating insects took place in which epoch ?

A

Eocene

B

Pliocene

C

Miocene

D

Palaeocene

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • Enzymes

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|11 Videos
  • Fungi

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|28 Videos

Similar Questions

Explore conceptually related problems

(i) A husband has 46 chromosomes, his wife has 46 chromosomes. Then why don't their offsprings have 46 pairs of chromosomes, which is obtained by the fusion of male and female gametes? (ii) "Geographical isolation is not a major factor in the speciation of a self pollinating plant species." Justify this statement with the help of an example.

(a) Explain how some plants are adapted for achieving pollination through insects. (b). Explain how pollination takes place in vallisneria and submerged aquatic plants.

What is meant by speciation? List four factors that could lead to speciation. Which of these cannot be a major factor in the speciation of a self-pollinating plant species. Give reason to justify your answer.

The work function for the following metals is given: Na: 2.75 eV, K: 2.30 eV, Mo: 4.17 eV, Ni: 5.15 ev . Which of these metals will not give photoelectric emission for a radiation of wavelength 3300 Å from a He-Cd laser placed 1 m away from the photocell? What happens if the laser is brought nearer and placed 50 cm away ?

Distinguish between unisexual and bisexual flowers giving one example of each. Draw a neat diagram showing fertilisation in a flower and label: a] Pollen tube b] Male germ cell c] Female germ cell, on it. OR Draw the diagram showing the germination of pollen on stigma and label the part on which pollination takes place. Answer the following questions based on diagram given aside. i] Name the part marked 'P. in the diagram. ii] How does 'P. reach part 'B'? iii] State the importance of the part 'C'. iv] What happens to the part marked 'D' after fertilisation is over? Mention the role of gamete and zygote in sexually reproducing organisms.

Distinguish between homologus organs and analogus organs. In which catagory would you place wings of a bird and wings of a bat? Justify your answer giving a suitable reason.

TRUEMAN BIOLOGY-EVOLUTION-MULTIPLE CHOICE QUESTIONS
  1. Which one of the following amino-acids was not found to be synthesized...

    Text Solution

    |

  2. Which cannot be explained by Lamarckism ?

    Text Solution

    |

  3. Major radiation of mammals, birds and pollinating insects took place i...

    Text Solution

    |

  4. Jurassic period of the Mesozoic era is characterised by

    Text Solution

    |

  5. Hardy-Weinberg principle explains :

    Text Solution

    |

  6. Resemblance between widely different groups due to a common adaptation...

    Text Solution

    |

  7. Which one of the following is not a living fossil

    Text Solution

    |

  8. Darwin finches are related to which of the following evidences ?

    Text Solution

    |

  9. Arrange the periods of palaeozoic era in ascending order in a geologic...

    Text Solution

    |

  10. Industrial melanism as observed in peppered moth proves that

    Text Solution

    |

  11. Plants and animals of Galapagos islands resemble most closely to plant...

    Text Solution

    |

  12. Change of frequency of alleles in a population results in evolution is...

    Text Solution

    |

  13. Which of the following defines Hardy-Weinberg's law?

    Text Solution

    |

  14. Hardy-Weinberg equilibrium is known to be affected by gene flow, genet...

    Text Solution

    |

  15. An evolutionary process giving rise to new species adapted to new habi...

    Text Solution

    |

  16. Higher frequency of melanie British moths and DDT resistance in mosqui...

    Text Solution

    |

  17. Transfer of genes from one gene pool to another is called :

    Text Solution

    |

  18. Whose bicentenary is the year 2009

    Text Solution

    |

  19. Darwinism explains all the following except

    Text Solution

    |

  20. Which one of the following was not given by Darwin's theory of evoluti...

    Text Solution

    |