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Questions and Answers
What is the general habitat of Hydra?
Where are the testes found in Hydra?
How does Hydra feed on its prey?
During normal conditions, how does Hydra reproduce asexually?
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Which type of locomotion is NOT mentioned as a method used by Hydra?
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In which phylum does Hydra belong?
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What is the main unit of the excretory system in Platyhelminthes?
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What is the reproductive system of Hydra except Schistosoma?
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What is the characteristic body form of animals in the phylum Cnidaria?
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How do cnidarians catch their prey?
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Which class of cnidarians includes organisms found in both fresh water and marine environments?
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What is the function of coelenteron in the body of a cnidarian?
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What is the name of the cavity in the body of a cnidarian that serves as the intestine?
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Which phylum do animals with radial symmetry belong to?
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In which layer of the body are nematoblasts found in cnidarians?
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What is the process through which cnidarians reproduce asexually?
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Which class of cnidarians includes organisms with two stages in their life cycle: hydroid form and Medusoid form?
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What is the primary means of respiration and excretion in cnidarians?
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Study Notes
Habitat and Anatomy of Hydra
- Hydra's general habitat is freshwater environments
- Testes are found in the epithecial layer of Hydra
- Hydra feeds on its prey using its tentacles to capture and digest food in its gastrovascular cavity
- Hydra reproduces asexually by budding, where a new individual grows from the parent's body
Locomotion and Phylum
- Hydra moves using cilia or muscular contractions, but not flagella
- Hydra belongs to the phylum Cnidaria
Excretory System
- The main unit of the excretory system in Platyhelminthes is the protonephridium
- Hydra's reproductive system is hermaphroditic, except for Schistosoma, which is dioecious
Characteristics of Cnidarians
- Cnidarians have a characteristic radial symmetry
- Cnidarians catch their prey using stinging cells called cnidoblasts
- Coelenterates, a class of cnidarians, include organisms found in both freshwater and marine environments
Body Structure and Function
- Coelenteron is the digestive cavity in the body of a cnidarian, serving as the intestine
- The gastrovascular cavity is the cavity in the body of a cnidarian that serves as the intestine
- Nematoblasts are found in the ectodermal layer of the body in cnidarians
Reproduction and Respiration
- Cnidarians reproduce asexually through budding or fragmentation
- The primary means of respiration and excretion in cnidarians is diffusion through the body surface
- Cubozoa is the class of cnidarians that includes organisms with two stages in their life cycle: hydroid form and Medusoid form
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Description
Test your knowledge of the Animal Kingdom and the Cnidaria (Coelenterata) Phylum with this quiz. Learn about the characteristics and diversity of Coelenterates, which are the simplest of eumetazoans.
