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प्रश्न
Write four distinguishing characters of phylum - Echinodermata.
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उत्तर
- Calcareous spines are present on the bodies of these animals; hence, they are called echinoderms.
- These animals are found only in the ocean.
- Their body is triploblastic, eucoelomate. And it is radially symmetrical in the adult stage. However, they show bilateral symmetry in the larval stage.
- They perform locomotion with the help of tube-feet. Tube feet are also useful for capturing prey. Some animals are sedentary.
- They have a skeleton made up of calcareous spines and/or ossicles (plates).
- These animals have a good ability to regenerate.
- These animals are mostly unisexual.
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संबंधित प्रश्न
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How does locomotion take place in starfish?
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.
Mention two features of phylum Echinodermata.
The locomotion of phylum Echinodermata is affected by ______.
Analogy:
Echinodermata: ______:: Soft Bodies Animals: ______.
Cockroach, Frog, Sparrow, Starfish, from these animals which can regenerate its broken body part?
