Home
Class 11
BIOLOGY
Assertion: Oesophagus pierces the diaph...

Assertion: Oesophagus pierces the diaphragm and enters the abdominal cavity.
Reason: Peristaltic movement starts from oesophagus.

A

If both assertion and reason are true and reason is the correct explantion of assertion

B

If both assertion and reason are true but reason is not the correct explnantion of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B

Oesophagus is a long and thin tube that pierces the diaphragm and enters the abdominal cavity. Peristaltic movement of contraction and relaxation of muscles starts from oesophagus.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL COORDINATION AND INTEGRATION

    NCERT FINGERTIPS|Exercise Chemical Coordination And Integration|135 Videos
  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    NCERT FINGERTIPS|Exercise Excretory Products And Their Elimination|133 Videos

Similar Questions

Explore conceptually related problems

Assertion : The testes are situated outside the abdominal cavity within scrotum . Reason : Lower temperature for the testis is necessary for spermatogenesis.

Assertion Scrotum is a pouch in which testes are held. Reason A pocketed sac of the abdominal cavity or pelvic cavity holds testes.

Assertion : Plant movements induced by external stimuli are known as autonomic movements. Reason: Seismonastic movements are shown by crows.

Assertion: "Touch" responses in Mimosa is an example of such movement. Reason : Nastic movements occur in the direction of stimulus.

Assertion : Iris of eye is called diaphragm of the eye. Reason : Iris closes the eye to protect from injury, entry of insects, etc.

Assertion The coelenteron of Hydra is called gastrovascular cavity. Reason Hydra is a monoblastic animal.

Assertion: The movements of roots in relation to water is termed as hydrotropism. Reason: Plant movements in response to moisture are known as hygroscopic movements.

Assertion: In cockroaches, inspiration is a passive process. Reason: The expansion of abdominal cavity allows the space of expansion of tracheal trunk. As a result, air enter through spiracle.

NCERT FINGERTIPS-DIGESTION AND ABSORPTION-Digestion And Absorption
  1. Match the two column and select the right one among option given {:(...

    Text Solution

    |

  2. Mathc the enzymes with their respective substrates and choose the righ...

    Text Solution

    |

  3. Dental formula in human beings is

    Text Solution

    |

  4. Liver is the largest gland and is associated with various functions, c...

    Text Solution

    |

  5. Mark the right statement among the following.

    Text Solution

    |

  6. Assertion: Human beings have two sets of teeth during their life. Re...

    Text Solution

    |

  7. Assertion: Oesophagus pierces the diaphragm and enters the abdominal ...

    Text Solution

    |

  8. Assertion : Caecum is a small blind sac which hosts some symbiotic mic...

    Text Solution

    |

  9. Assertion : Products of digestion are absorbed in the large intestine....

    Text Solution

    |

  10. Assertion: Pancreas in a heterocrine glan. Reaon: Endocrine part sec...

    Text Solution

    |

  11. Assertion: Mucosal epithelium of gut has goblet cells which secrete mu...

    Text Solution

    |

  12. Assertion: Gastrectomy can lead to iron-deficiency or anaemia. Reaso...

    Text Solution

    |

  13. Assertion: Trypsinogen is activated by enterokinase into active trypsi...

    Text Solution

    |

  14. Assertion: Bile is not a true digestive juice Reason: Bile lacks dig...

    Text Solution

    |

  15. Assertion: The gall bladder stores lipases which are released in small...

    Text Solution

    |

  16. Assertion: The slight, smell and presence of good in the oral cavity c...

    Text Solution

    |

  17. Assertion: The sight, smell and presence of food in the oral cavity ca...

    Text Solution

    |

  18. Assertion: Glucose, Na^(+) and amino acids are absorbed actively. Re...

    Text Solution

    |

  19. Assertion: Bile helps in emulsification of fat. Reason: Bile salts h...

    Text Solution

    |

  20. Assertion: Water and electrolytes are almost fully absorbed in the lar...

    Text Solution

    |