Question
Download Solution PDFHydra is an example of which of the following phylum of the animal kingdom?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Coelenterata.
Key Points
- Hydra is an example of the phylum Coelenterata.
- Coelenterates are a group of animals that have radial symmetry, a gastrovascular cavity, and stinging cells called nematocysts.
- Hydras are small, freshwater animals that have cylindrical body with tentacles around their mouth.
- They feed on small animals that they capture with their tentacles.
- Hydras reproduce both sexually and asexually.
- Hydras have radial symmetry, which means that they have the same number of parts arranged around a central axis from any point.
- Hydras have a gastrovascular cavity, which is a single cavity that serves both for digestion and for circulation.
- Hydras have stinging cells called nematocysts, which they use to capture prey.
- Hydras are small, freshwater animals.
- Hydras reproduce both sexually and asexually.
Important Points
Phylum | Important information |
---|---|
Platyhelminthes |
Flatworms, such as planarians, have bilateral symmetry and a flat body. They are mostly hermaphrodites. |
Nematoda |
Roundworms, such as Ascaris, have cylindrical bodies and a complete digestive system. They are mostly parasitic. |
Porifera |
Sponges are sessile animals that have a porous body. They filter food from the water. |
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