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प्रश्न
Hard calcium carbonate structures are used as skeleton by
विकल्प
Echinodermata
Protochordata
Arthropoda
Nematoda
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उत्तर
Echinodermata
Explanation -
In many echinoderms, the endoskeleton (skeleton present inside the body) is made up of hard calcium carbonate structures.
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संबंधित प्रश्न
Write four distinguishing characters of phylum - Echinodermata.
Find an odd one out.
Are jellyfish and starfish similar to fishes? If no justify the answer.
Which among the following is exclusively marine?
The locomotory organs of Echinodermata are
Match items of column (A) with items of column (B)
| (A) | (B) | ||
| (a) | Pore bearing animals | (A) | Arthropoda |
| (b) | Diploblastic | (B) | Coelenterata |
| (c) | Metameric segmentation | (C) | Porifera |
| (d) | Jointed legs | (D) | Echinodermata |
| (e) | Soft bodied animals | (E) | Mollusca |
| (f) | Spiny skinned animals | (F) | Annelida |
______ is not a characteristic of Phylum Echinodertnata.
Read the following statements.
- Metagenesis is observed in Helminths.
- Echinoderms are triploblastic and coelomate animals.
- Round worms have an organ-system level of body organization.
- Comb plates present in ctenophores help in digestion.
- Water vascular system is characteristic of Echinoderms.
Choose the correct answer from the options given below.
Identify the following animal and answer the questions that follow.
- Name its phylum.
- Name any two other examples of this phylum.
- Mention any two characters of this phylum.
Cockroach, Frog, Sparrow, Starfish, from these animals which can regenerate its broken body part?
