Home
Class 11
BIOLOGY
Assertion.The cnidarians are a great nui...

Assertion.The cnidarians are a great nuisance to the humans swimming in the sea.
Reason. They inject hypnotoxin which may prove fatal.

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

Similar Questions

Explore conceptually related problems

Assertion: soldiers are asked to break steps while crossing the bridge. Reason: The frequency of marching may be equal to the natural frequency of bridge and may lead to resonance which can break the bridge.

Assertion : There is no mixing of oxygenated and deoxygenated blood in the human heart. Reason : Valves are present in the heart which allows the movement of blood in one direction only.

Assertion: Only red algae are able to flourish at the great dpth of sea. Reason: Red algae has the pigments r-phycoerythrin and r-phycocyanin.

Assertion The immediate ancestor of present day human was Australopithecus. Reason Australopithecus was discovered from Australia and its cranial capacity was 1150-1300cm^2 , Which is very close to that of human 1400-1450 cm^3 .

Assertion. In recombinant DNA technology, human genes are often transferred into bacteria or yeast. Reason. Both bacteria and yeast multiply very fast to form huge population which expresses the desired gene

PRADEEP-ANIMAL KINGDOM -Assertion-Reason Type Questions
  1. Assertion. Homoeothermy provides faster metabolism. Reason. Enzyme a...

    Text Solution

    |

  2. Assertion. Water current flowing through the canal system is of prime ...

    Text Solution

    |

  3. Assertion.The cnidarians are a great nuisance to the humans swimming i...

    Text Solution

    |

  4. Assertion. Coral reefs serve as stable marine ecosystems. Reason. Th...

    Text Solution

    |

  5. Assertion. Egg is alecithal ( yokless) in the flatworms. Reason. Yok...

    Text Solution

    |

  6. Assertion. The roundworms are eucoelomates. Reason. They have a flu...

    Text Solution

    |

  7. Assertion. Coelom in the annelids is divided into compartmentsby trans...

    Text Solution

    |

  8. Assertion. Blood does not clot as a leech is sucking it. Reason. An ...

    Text Solution

    |

  9. Assertion. Oysters and clams produce pearls. Reason. They are cultur...

    Text Solution

    |

  10. Assertion. Sepia emits a dark cloud of ink when persued by an enemy. ...

    Text Solution

    |

  11. Assertion. Many female insects emit pheromones into the air. Reason...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |