Home
Class 12
BIOLOGY
Select the homologous structures from th...

Select the homologous structures from the combinations given below :
Forelimbs of whales and bats
Tuber of potato and sweet potato
Eyes of octopus and mammals
Thorns of Bougainvillea and tendrils of Cucurbita. (b) State the kind of evolution they represent.

Text Solution

Verified by Experts

Homologous orgnas or structures are those that are similar in anatomy or structure but perform different function . From the given options ,following are homologous structures.
Forelimbs of whales and bats are similar in structer but perform different fucntions of swimming and flying ,respectively.
Thorns of Bougainvillea and tendrils of cucurbit are both modifications of a stem arising from axillary bud but perform different function of protection and climbing respectively.
( b) The evolution represented by homologous organ or.structures is divergent evolution as they have common origin but have diverged with evolution.
Promotional Banner

Topper's Solved these Questions

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SET-III|57 Videos

  • SAMPLE PAPER 2019

    XII BOARDS PREVIOUS YEAR|Exercise Section E Part B|3 Videos

Similar Questions

Explore conceptually related problems

(a) Select the homologous structures from the combinations given below: (i) Forelimbs of whales and basts (ii) Tuber of potato and sweet potato (iii) Eyes of octopus and mammals (iv) Thorns of Bougainvillea and tendrils of Cucurbita (b) State the kind of evolution they represent.

Identify the following paris of Homologous or Analogous organs: i) Sweet potato and potato ii) Eye of octopus and eye of mammals iii) Thorns of Bougainvillea and tendrils of Cucurbits. iv) Fore limbs of Bat and Whale.

How many of the following are examples of homologus structures in plant : (a) Eyes of octapus and mammal (b) Potato and weet potato (c) Forelimbs of whale, bat cheetah and human (d) Vertebrate heart (e) Thorn of bougainvillea and tendril of cucurbita (f) Potato and corrot (g) Potato and radish

Choose the pairs of organs that are a result of convergent evolution i. Wings of butterflies and wings of birds. ii. Flippers of penguins and flippers of dolphins iii. Eyes of octopus and eyes of mammals. iv. Thorns of Bougainvillea and tendrils of Cucurbia. v. Sweet potato and potato. vi. Vertebrate hearts and vertebrate brains

Read the statements given below and identify the suitable option : (i) Eye of Octopus and mammals are homologous. (ii) sweet potato and photo are analogous. (iii) Thorus of Bougainville and tendrils of Cucurbita are homologous

(a) Differentiate between analogous and homologous organs. (b) Select and write analogous structures from the list given below: (i) Wings of butterfly and birds. (ii) Vertebrate hearts. (iii) Tendrils of Bougainvillea and Cucurbita. (iv) Tubers of sweet potato and potato.

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.

Out of the following , which , is an example of convergent evolution ? (i) Eyes of octopus and mammals (ii) Flipper of penguins and Dolphins (iii) Sweet potato and potato

XII BOARDS PREVIOUS YEAR-XII BOARDS-SET- I
  1. List two advantages of the use of unleaded petrol in automobiles as fu...

    Text Solution

    |

  2. Why do moss plants produce very large number of male gametes ? Provide...

    Text Solution

    |

  3. Select the homologous structures from the combinations given below : ...

    Text Solution

    |

  4. Why are the plants raised through micropropagation termed somaclones ?...

    Text Solution

    |

  5. Explain the different steps involved during primary treatement phase o...

    Text Solution

    |

  6. What is mutualism ? Mention any two examples where the organisms invol...

    Text Solution

    |

  7. List any four techniques where the principle of ex-situ conversion of ...

    Text Solution

    |

  8. State what is apomixis. Write its significance. How can it be commerci...

    Text Solution

    |

  9. During a mohohybrid cross involving a tall pea plant with a dwarf pea ...

    Text Solution

    |

  10. Explain the significance of satellite DNA in DNA fingerprinting techni...

    Text Solution

    |

  11. What does the following equation represent ? Explain . p^(2)+2pq+q^...

    Text Solution

    |

  12. A heavity bleeding and bruised road accident victim was brought to a n...

    Text Solution

    |

  13. Enumerate any six essentials of good ,effective Dairy Farm Management ...

    Text Solution

    |

  14. State the medicinal value and the bioactive molecule produced by strep...

    Text Solution

    |

  15. What are methanogens ? How do they help to generate biogas ?

    Text Solution

    |

  16. Rearrrange the following in the correct sequence to accomplish an impo...

    Text Solution

    |

  17. Describe any three potential applications of genetically modified plan...

    Text Solution

    |

  18. Explain how Eli Lilly, an American company produced insulin by recom...

    Text Solution

    |

  19. How do snails, seeds, bears, zooplanktons, fungi and bacteria adapt to...

    Text Solution

    |

  20. Explain the function of each of the following : (a) Coleorihiza , ...

    Text Solution

    |