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प्रश्न
Write a short note.
Collar cells
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उत्तर
- Collar cells are special types of cells present in animals belonging to the phylum Porifera.
- Collar cells help in the movement of water within the body.
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संबंधित प्रश्न
Spongilla bears numerous pores on their body. What are those pores called?
Through which hole the animals in this phylum give out water from their body?
True (or) False. If false write the correct answer.
Classification helps to know the origin and evolution of an organism
The skeletal framework of Porifera is ______.
Comment on the aquatic and terrestrial habits of amphibians.
Identify a member of porifera
Tissue organization can be seen in phylum Porifera.
Name the locomotory organs seen in phylum protozoa.
Match the column A with column B and choose the correct option
| Column I | Column II |
| A. Porifera | i. Canal system |
| B. Aschelminthes | ii. Water-vascular system |
| C. Annelida | iii. Muscular pharynx |
| D. Arthropoda | iv. Jointed appendages |
| E. Echinodermata | v. Metameres |
Fill up the blank spaces appropriately
| Phylum/Class | Excretory Organ | Circulatory Organ | Respiratory Organ |
| Arthropoda | Lungs/Gills/ Tracheal System | ||
| Nephridia | Closed | Skin/parapodia | |
| Metanephridia | Open | ||
| Amphibia | Closed | Lung |
Name
An animal having canal system and spicules
Sponges have special cells present on their body, they are known as ______ cells.
Name the asexual reproductive structures of Sponges.
