Home
Class 11
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
(A) Frog is a poikilotherm
(B) Frog does not have any coronary circulation
(C) Heart is "Myogenic" in nature
(D) Heart is autoexcitable

A

Only d

B

a and b

C

c and d

D

Only c

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MORPHOLOGY OF FLOWERING PLANTS

    CENGAGE BIOLOGY|Exercise Archives|41 Videos

  • NEET 2018 PAPER

    CENGAGE BIOLOGY|Exercise MCQ|48 Videos

Similar Questions

Explore conceptually related problems

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

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 .

In the following question,select the related word/number from the given alternatives. 18. Perch:Fresh water :: ? :Salt water (A) Frog (B) Cod (C) Snake (D) Crocodile

Read the assertion and reason carefully to mark the correct option out of the options given below: (a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (c) If the assertion is true but the reason is false (d) If both the assertion and reason are false (e) If the assertion is false but reason is true Assertion : An artifical pacemaker can replace the sinoatrial node of heart. Reason : This is because, an artifical pacemaker is capable of stimulating the heart electrically to maintain its beats.

Explain the following : (a) Why does the atrial systole normally precedes the ventricular systole ? (b) Why is S-A node called the pacemaker of the heart ? (c ) Why does the ventricle relax as a closed chamber in the early phase of its diastole ? (d) Why is there no mixing of deoxygenated and oxgenated blood in mammalian heart ? (e ) Why can you palpate the pulse on an artery in each heart beat ? (f) Why does the lymph contain much less proteins than the plasma ? (g) Why does the ventricle contract as a closed chamber in the early phase of its systole ? (h) Why is the closed circulatory system more efficient than the open one ? (i) Why does the left ventricle has a thicker wall than the right ventricle ?

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.

Consider the following statements? (a) Before birth, foramen ovale allows the blood to pass from right atrium to left atrium , thus bypassing the pulmonary circulation , (b) Heart is protected by a double walled pericardium , (c) The muscle fibres present in heart are different from smooth muscles in being mesodermal in origin , (d) Nodal tissues like AVN, SAN are specialised neural tissues which are distributed in heart. How many among the statements mentioned above are correct?

Consider the following four statements (A-D) related to the common frog rane tigrina and select the correct option stating which ones are true (T) and which ones are false (F) Statements : (A) On dry land it would die due to lack of O_(2) of its mouth is farcibly kept closed for a few days (B) It has four-chambered heart (C) ON dry land it turns uricotelic from ureotelic (D) Its life-history is carried out in pond water

Read the following statements carefully (i) In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body part from where deoxygenated blood is returned to the heart (ii) The openings of the right and the left ventricles into pulmonary artery and aorta respectively are provided with the mitral valves (iii) The nodal musculature has the ability to generate action potential without any external stimuli, i,e., it is autoexcitable (iv) The T-wave of ECG represent depolarisation of the ventricles. Which of the above two statements are incorrect ?

CENGAGE BIOLOGY-NEET 2017 PAPER-MCQ
  1. The water potential of pure water is

    Text Solution

    |

  2. Select the mismatch

    Text Solution

    |

  3. With reference to factors affecting the rate of photosynthesis, which ...

    Text Solution

    |

  4. PEP is primary CO(2) acceptor in

    Text Solution

    |

  5. Which statement is wrong for Krebs' cycle ?

    Text Solution

    |

  6. Which of the following prevents falling of fruits OR Fruit and lea...

    Text Solution

    |

  7. Which cells of Crypts of Lieberkuhn secrete antibacterial lysozyme ?

    Text Solution

    |

  8. Which of the following option best respresents the enzyme compositi...

    Text Solution

    |

  9. The Primary denition in human differ from permanent denition is not ha...

    Text Solution

    |

  10. Lungs are made up of air-filled sacs, the alveoli . They do not collap...

    Text Solution

    |

  11. The hapatic partal vein drains blood to liver from

    Text Solution

    |

  12. Frog's heart when taken out of the body continues to beat for sometime...

    Text Solution

    |

  13. A decrease in blood pressure // volume will not cause the release of

    Text Solution

    |

  14. Which of the following statements is correct ?

    Text Solution

    |

  15. The pivot joint between atlas and axis is a type of

    Text Solution

    |

  16. Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Selec...

    Text Solution

    |

  17. Receptor sites for neuotransmitters are presents on

    Text Solution

    |

  18. Good vision depends on adequate intake of cacotene rich food Select ...

    Text Solution

    |

  19. Myelin sheath is produced by or Mylin of the nerve fibres of the c...

    Text Solution

    |

  20. Hypersecretion of Growth Hormone in adults does not cause further incr...

    Text Solution

    |