Home
Class 9
BIOLOGY
Hard calcium carbonate structures are us...

Hard calcium carbonate structures are used as skeleton by

A

Echinodermata

B

Protochordata

C

Arthropoda

D

Nematoda

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • DIVERSITY IN LIVING ORGANISMS

    LAKHMIR SINGH & MANJIT KAUR|Exercise Class Assignment|1 Videos

  • DIVERSITY IN LIVING ORGANISMS

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT Textbook|1 Videos

  • DIVERSITY IN LIVING ORGANISMS

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based|5 Videos

  • IMPROVEMENTS IN FOOD RESOURCES

    LAKHMIR SINGH & MANJIT KAUR|Exercise VERY SHORT ANSWER QUESTIONS|28 Videos

Similar Questions

Explore conceptually related problems

Calcium carbonate is

How calcium carbonate is prepared?

Draw the structure and carbon skeleton for cyclohexane.

Calcium carbonate (Lime stone) is heated.

Calcium carbonate, CaCO_(3) decomposes upon heating to calcium oxide and carbon dioxide. What mass of solid calcium carbonate is required to produce 2.40 liters of carbon dioxide measured at STP?

[A] : Calcium carbonate crystals are called cystoliths . [R] : The main body of a cystolith is a cellulose extension of cell wall in which calcium carbonate is deposited .

1000 g aqueous solutioin of CaCO_(3) contains 10 g of calcium carbonate, hardness of the solution is

The temporary hardness of water due to calcium bicarbonate can be removed by adding

LAKHMIR SINGH & MANJIT KAUR-DIVERSITY IN LIVING ORGANISMS-Diversity In Living Organisms
  1. The locomotory organs of Echinodermata are

    Text Solution

    |

  2. Differentiation in segmental fashion occurs in

    Text Solution

    |

  3. Hard calcium carbonate structures are used as skeleton by

    Text Solution

    |

  4. Two chambered heart occurs in

    Text Solution

    |

  5. Skeleton is made entirely of cartilage in

    Text Solution

    |

  6. Amphibians do not have the following

    Text Solution

    |

  7. The feature that is not a characteristic of protochordata?

    Text Solution

    |

  8. Give one example of each (i) Asymmetry, radial symmetry and bilatera...

    Text Solution

    |

  9. Why is Euglena is called plant-animal ?

    Text Solution

    |

  10. Name the organisms which has (i) Setae and parapodia (ii) Tube feet.

    Text Solution

    |

  11. What is haemocoel ? Which groups of animals have haemocoel ?

    Text Solution

    |

  12. Give one point of difference between Gymnosperms and Angiosperms.

    Text Solution

    |

  13. Identify animal groups having (a) Soft bodied animals supported by c...

    Text Solution

    |

  14. Give one point of difference notochord and nerve cord.

    Text Solution

    |

  15. In what why, amphibians are advanced than the fishes ?

    Text Solution

    |

  16. Differentiate the nature of skin in four classes of tetrapoda.

    Text Solution

    |

  17. Describe some flight adaptations of the birds.

    Text Solution

    |

  18. Why are whales not grouped in fishes ?

    Text Solution

    |

  19. (a) Identify the organism in the following figure (b) Label the part...

    Text Solution

    |

  20. (a) Identify the organism (b) Label the part 1 and 2 (c) Write th...

    Text Solution

    |