Home
Class 12
BIOLOGY
Frog's heart when taken out of the body ...

Frog's heart when taken out of the body continues to beat for sometime .
Select the best option from the following statements .
I . Frog is a poikilothem .
II . Frog does not have any coronary circulation.
III . Heart is autoexcitable .

A

Only III

B

Only IV

C

l and II

D

III and IV

Text Solution

Verified by Experts

The correct Answer is:
D
Frog heart is myogenic and autoexcitable. In this conditions, contraction of the heart origintes within the muscles itself. When muscles are contracting. They are releasing heat, which keeps the electrochemical reactions in muscles going so the muscles of heart keep contracting after the removal of heart from the body.
Promotional Banner

Topper's Solved these Questions

  • SOLVED PAPERS 2017

    ARIHANT NEET|Exercise Solved Paper 2017 (AIIMS)|34 Videos

  • SOLVED PAPERS 2017

    ARIHANT NEET|Exercise Solved Paper 2017 (JIPMER)|35 Videos

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    ARIHANT NEET|Exercise MEDICAL ENTRANCE EXAMS|132 Videos

  • SOLVED PAPERS 2018

    ARIHANT NEET|Exercise Solved Paper 2018 (JIPMER)|41 Videos

Similar Questions

Explore conceptually related problems

Frog's heart when taken out of the body continues to beat for sometime Select the best option from the following statements (A) Frog is a poikilotherm (B) Frog does not have any coronary circulation (C) Heart is "Myogenic" in nature (D) Heart is autoexcitable

Rrog's heart when taken out of the body continues to beat for sometime. Select the best option from the following statements. (a) Frog is poikilotherm (b) Frog does not have any coronary circulation (c ) Heart is "myogenic" in nature (d) Heart is autoexcitable

In each of the following questions. Statement(s) is/are given followed by two/four conclusions I, II , III and IV. You have to consider the statement(s) to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statement(s). Statement I : Ankit is a singer. II : All the singers are fat. Conclusions : I. Ankit is fat. II. ALl fat men are singers. III. Fat men are not singers. IV. Ankit is not fat.

In each of the following questions, one/two statements are given followed by two/four conclusions I, II, III and IV. You have to consider the statements to be true even if they seem to be at variance from commonly known fact. You have to decide which of the given concluions, if any follow from the given statements. Statements : I. Some cats are dogs. II. No dog is a toy. Conclusions : I. Some dogs are cats. II. Some toys are cats. III. Some cats are not toys. IV : All toys are cats.

One/two statements (s) is/are given followed by two conclusions, I and II. You have to consider the statement(s) to be true, eve if it/they seems (s) to be at variance from commonly known facts. You have to decide which of the given conclusions. If any, follow(s) from the given statement(s). Statements : (a) All frogs are tortoises. (b) No tortoise is a crocodile. Conclusions : I. No crocodile is a frog. II. No frog is a crocodile.

ARIHANT NEET-SOLVED PAPERS 2017-Solved Paper 2017 (JIPMER)
  1. Frog's heart when taken out of the body continues to beat for sometime...

    Text Solution

    |

  2. Herbicide that blocks electron transport from PS-II to PS-I by inhibit...

    Text Solution

    |

  3. Statement I Microtubules are formed only in animal cells. Statement ...

    Text Solution

    |

  4. Read the functions given below and identify the concerned nutrient. ...

    Text Solution

    |

  5. Torsion of visceral mass is seen in animals belonging to class

    Text Solution

    |

  6. A plant is provided with ideal conditions for photosynthesis and suppl...

    Text Solution

    |

  7. Match the following columns.

    Text Solution

    |

  8. Fixation of one CO(2) molecule through Calvin cycle requires.

    Text Solution

    |

  9. Oxygen dissociation curve of haemoglobinis is

    Text Solution

    |

  10. A hormone, secreted by the endocrinal cells of duodenal mucosa which i...

    Text Solution

    |

  11. Intrinsic and extrinsic pathways of blood clotting are interlinked at ...

    Text Solution

    |

  12. Match the storage products listed under column I with the organism giv...

    Text Solution

    |

  13. Globular head of myosin contains

    Text Solution

    |

  14. Dense regular connective tissue is present in

    Text Solution

    |

  15. Note the following features and choose the ones applicable to Wucherer...

    Text Solution

    |

  16. The first stable product of fixation of atmospheric nitrogen in legumi...

    Text Solution

    |

  17. Which one of the following pairs is not correctly matched

    Text Solution

    |

  18. Which one of the following generally acts as an antagonist to gibberel...

    Text Solution

    |

  19. Ornithine cycle removes two waste products from blood in liver

    Text Solution

    |

  20. Macromolecule chitin is

    Text Solution

    |

  21. Which of the following statements is correct in relation to the endocr...

    Text Solution

    |