Home
Class 12
BIOLOGY
Are the thorns of Bougainvillea and tend...

Are the thorns of Bougainvillea and tendrils of cucurbita homologous or analogous? What type of evolution has brought such a similarity in them?

Text Solution

Verified by Experts

They are homologous. Divergent evolution has brought this similarity.
Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    OSWAAL PUBLICATION|Exercise TOPIC :1 ORIGIN OF LIFE ON EARTH AND RELATED EVIDENCE (SHORT ANSWER TYPE QUESTIONS-I)|11 Videos

  • EVOLUTION

    OSWAAL PUBLICATION|Exercise TOPIC :1 ORIGIN OF LIFE ON EARTH AND RELATED EVIDENCE (SHORT ANSWER TYPE QUESTIONS-II)|19 Videos

  • ENVIRONMENTAL ISSUES

    OSWAAL PUBLICATION|Exercise TOPIC - 2 ( MULTIPLE CHOICE QUESTIONS.)|22 Videos

  • HUMAN HEALTH AND DISEASES

    OSWAAL PUBLICATION|Exercise TOPIC-2(Multiple choice question)|23 Videos

Similar Questions

Explore conceptually related problems

Identify the examples of homologous structures from the following- (i) Vertebrate hearts (ii) Thorns in Bougainvillea and tendrils of Cucurbita. (iii) Food storage-organs in sweet potato and potato.

Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato.

Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato.

There are two different types of organs, homologous and analogous. Differentiate between them by giving three points.

Classify the following as examples of homology and analogy: Tendrils of Lathyrus and tendrils of Gloriosa.

b) i) A non ideal solution has DeltaH_("mixing")gt0 . What type of deviation does it show from Raoult's law? ii) What is an azeotrope?

When baking soda is mixed with lemon juice, bubblesare formed with the evolution of a gas. What type of change is it? Explain.

Assertion : Human ancestors never used their tails and so the tails expressing gene has disappeared in them. Reason : Lamarck's theory of evolution is popularly called theory of continuity of germ plasm.

Name the three common defects of vision. What are their causes? Name the type of lens used to correct each of them.

OSWAAL PUBLICATION-EVOLUTION-TOPIC :2 EVOLUIONARY THEORIES .ITS MECHANISM AND EVOLUTION OF MAN( MULTIPLE CHOICE QUESTIONS)
  1. Are the thorns of Bougainvillea and tendrils of cucurbita homologous o...

    Text Solution

    |

  2. Which of the following is used as an atmospheric pollution indicator?

    Text Solution

    |

  3. The theory of spontaneous generation stated that:

    Text Solution

    |

  4. Animal husbandry and plant breeding programmes are the examples of:

    Text Solution

    |

  5. Palaentological evidences for evolution refer to the :

    Text Solution

    |

  6. The bones of forelimbs of whale, bat, cheetah and man are similar in s...

    Text Solution

    |

  7. Analogous organs arise due to :

    Text Solution

    |

  8. (P+Q)^2 =p^2 +2pq +Q^2=1 represents an equation used in :

    Text Solution

    |

  9. Appearance of antibiotic-resistant bacteria is an example of:

    Text Solution

    |

  10. Evolution of life shows that life forms had a trend of moving from:

    Text Solution

    |

  11. Viviparity is considered to be more evolved because :

    Text Solution

    |

  12. Fossils are generally found in :

    Text Solution

    |

  13. For the MN-blood group system, the frequencies of M and N alleles are ...

    Text Solution

    |

  14. Which type of selection is industrial melanism observed in moth, Bisto...

    Text Solution

    |

  15. The most accepted line of descent in human evolution is :

    Text Solution

    |

  16. Which of the following is an example for link species?

    Text Solution

    |

  17. Match the scientists listed under column 'A' with ideas listed column ...

    Text Solution

    |

  18. In 1953 S. L. Miller created primitive earth conditions in the laborat...

    Text Solution

    |

  19. Variations during mutations of meiotic recombinations are

    Text Solution

    |