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प्रश्न
Which among the following is exclusively marine?
विकल्प
Porifera
Echinodermata
Mollusca
Pisces
उत्तर
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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संबंधित प्रश्न
Answer in brief.
Write four distinguishing characters of phylum- Echinodermata.
Sketch, labell and classify Star fish .
What are the locomotory organs of the animal given in the picture?
Name the phylum in which earthworm and starfish belongs to.
How does locomotion occur in earthworm and starfish?
Write a short note.
Starfish
Analogy:
Echinodermata: ______:: Soft Bodies Animals: ______.
In the animals belonging to the phylum Echinodermata, the body is divided into head, muscular foot, and the visceral mass.
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.
Read the statements and answer accordingly:
Calcareous spines are present on the body. Tube feet are used for locomotion and capturing prey also.
- Identify the phylum and give one example.
