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Question
Which among the following is exclusively marine?
Options
Porifera
Echinodermata
Mollusca
Pisces
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Solution
Echinodermata
Explanation -
All the known members of Phylum Echinodermata (the spiny-skinned animals) are exclusively marine. Members of Phylum Porifera are mostly marine, rarely freshwater (e.g. Spongilla). Members of Phylum Mollusca are mostly marine. Many, however, occur in freshwater (e.g. Unio) and some even in damp soil (e.g. some snails and slugs). Members of Class Pisces are both marines as well as fresh water.
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Answer in brief.
Write four distinguishing characters of phylum- Echinodermata.
Locomotion of starfish takes place through pseudopodia.
How does locomotion occur in earthworm and starfish?
Are jellyfish and starfish similar to fishes? If no justify the answer.
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 |
Analogy:
Echinodermata: ______:: Soft Bodies Animals: ______.
Which group of animals belong to the same phylum?
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.
Cockroach, Frog, Sparrow, Starfish, from these animals which can regenerate its broken body part?
