Home
Class 11
BIOLOGY
In which animal, nerve cell is present b...

In which animal, nerve cell is present but brain is absent ?

A

Sponge

B

Honeybee

C

Cockroach

D

Hydra

Text Solution

Verified by Experts

The correct Answer is:
D
Hydra possesses primitive type of nervous system.All neurons are similar and joined with one another to form a nerve net but brain is absent.
Promotional Banner

Topper's Solved these Questions

  • MORPHOLOGY OF FLOWERING PLANTS

    NCERT FINGERTIPS|Exercise Morphology Of Flowering Plants|135 Videos

  • PHOTOSYNTHESIS IN HIGHER PLANTS

    NCERT FINGERTIPS|Exercise Photosynthesis In Higher Plants|136 Videos

Similar Questions

Explore conceptually related problems

Which cranial nerve is present in man but absent in frog ?

In which phylum nerve cells are found but nerves are absent

Bipolar nerve cells are present in

Which of the following cranial nerves is present in rabbit but absent in frog?

Phogocytic cells present in brain are

In which animal blood is red but blood corpuscles are absent?

Multipolar nerve cells are present in

Observe the prepared slide of a nerve cell and answer the following questions : 1. List three parts of nerve cell. 2. In which part of nerve cell, Nissl's granules present ? What is their composition ?

In which one of the following group, brain box is absent :-

NCERT FINGERTIPS-NEURAL CONTROL AND COORDINATION-Neural Control And Coordination
  1. In which animal, nerve cell is present but brain is absent ?

    Text Solution

    |

  2. Read the given statements and select the incorrect one.

    Text Solution

    |

  3. Neurons is sponges are

    Text Solution

    |

  4. In the accompanying diagram of a part of the human body, the structure...

    Text Solution

    |

  5. Afferent nerve fibre carries impulses from

    Text Solution

    |

  6. Skeletal muscles are controlled by

    Text Solution

    |

  7. In a human being, the number of cranial nerves is

    Text Solution

    |

  8. The 3^(rd),6^(th) and 11^(th) cranial nerves are respectively

    Text Solution

    |

  9. In a man, abducens nerve is injured. Which one of the following functi...

    Text Solution

    |

  10. Which one of the following transmits impulses to central neural system...

    Text Solution

    |

  11. The vagus nerve is the cranial nerve.

    Text Solution

    |

  12. Which of the following nerves is purely a motor nerve ?

    Text Solution

    |

  13. Which of the following cranial nerves of man is both sensory and motor...

    Text Solution

    |

  14. Vagus nerve effects

    Text Solution

    |

  15. Injury to vagus nerve is humans is not likely to affect

    Text Solution

    |

  16. Which of the following cranial nerves has the highest number of branch...

    Text Solution

    |

  17. How many pairs of cranial nerves are mixed nerves ?

    Text Solution

    |

  18. Hypoglossal nerve controls the movements of

    Text Solution

    |

  19. In a human being, the number of spinal nerves is

    Text Solution

    |

  20. The flow chart given here shows functional organisation of the human n...

    Text Solution

    |