Home
Class 11
BIOLOGY
Assertion. Ambulacral system of echinode...

Assertion. Ambulacral system of echinoderms contains water.
Pores in the madreporite let water enter this system.

A

If both A and B are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true but R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM

    PRADEEP|Exercise PRACTICE QUESTIONS (I.) MULTIPLE CHOICE QUESTIONS|240 Videos

  • ANATOMY OF FLOWERING PLANTS

    PRADEEP|Exercise ASSERTION-REASON TYPE QUESTIONS|14 Videos

  • BIOLOGICAL CLASSIFICATION

    PRADEEP|Exercise Practice Questions (II. Assertion-Reason Type Questions)|8 Videos
PRADEEP-ANIMAL KINGDOM -Assertion-Reason Type Questions
  1. Assertion. Many female insects emit pheromones into the air. Reason...

    Text Solution

    |

  2. Assertion. Arthropods undergo periodic ecdysis during their growth. ...

    Text Solution

    |

  3. Assertion. Ambulacral system of echinoderms contains water. Pores in...

    Text Solution

    |

  4. Assertion.Annelids, mollusks and arthropods are protostomous coelomate...

    Text Solution

    |

  5. Assertion. Small Tiedmann's bodies are associated with the ring ambula...

    Text Solution

    |

  6. Assertion.Termites and ants are social insects. Reason. Both establi...

    Text Solution

    |

  7. Assertion: Tapeworm, roundworm and pinworm are endoparasites of human ...

    Text Solution

    |

  8. Read the given statements and select the correct option. Statement 1...

    Text Solution

    |

  9. Assertion. Urochordate's tadpole larva is more chordata-like than the ...

    Text Solution

    |

  10. Assertion. Petromyzon ascends the rivers to spawn. Reason. It destro...

    Text Solution

    |

  11. Assertion. A fish cannot survive out of water. Reason. It gets O(2) ...

    Text Solution

    |

  12. Assertion : A shark can stay at a desired level in water without swinn...

    Text Solution

    |

  13. Assertion. Many deep sea fishes are luminscent. Reason. They use lig...

    Text Solution

    |

  14. Read the give statements and select the correct option. Statement 1 ...

    Text Solution

    |

  15. Assertion. Poison of cobra is neurotoxic. Reason. Antivenine is the ...

    Text Solution

    |

  16. Assertion.Avianbones are pneumatic. Reason. This makes body light fo...

    Text Solution

    |

  17. Assertion. In birds, syrinx acts as a voice box. Reason. They lack ...

    Text Solution

    |

  18. Assertion. Birds and mammals are endothermic. Reason. They generate ...

    Text Solution

    |

  19. Assertion. Most mammals are viviparous. Reason. They feed their youn...

    Text Solution

    |

  20. Assertion. Vertebrates have O(2) -carrying pigment in the erythrocytes...

    Text Solution

    |