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प्रश्न
Give scientific reason.
Our body irritates if it comes in contact with a jellyfish.
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उत्तर
- The mouth of jellyfish is surrounded by tentacles.
- The tentacles possess cnidoblasts which are used for capturing prey or for defense.
- When our body comes in contact with the tentacles of jellyfish, these cnidoblasts penetrate our skin as a defensive action.
- Cnidoblast injects the toxin in our body and thus, our body irritates if it comes in contact with jellyfish.
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संबंधित प्रश्न
Identify me.
I am diploblastic & acoelomate. Which phylum do I belong to?
Sketch, labell and classify Hydra .
Label the following.
Porifera : Asymmetrical : : Cnidaria : __________
Tentacles are used for capturing the prey.
How does the animal in the figure protect itself?
Draw a neat and labelled diagram.
Hydra
State whether true or false. If false, correct the statement.
Canal system is seen in coelenterates.
Why coelenterates are called diploblastic animals?
Real organs are absent in
How is the body wall of coelenterates arranged?
What is polymorphism?
Alternation of generations in Coelenterata is known as
Which of the following traits is not shared by both sea anemones and jelly fish?
What is metagenesis? Mention an example which exhibits this phenomenon.
Provide appropriate technical term in the space provided.
Free-floating form of cnidaria ______.
Give an example for the following:
Animal, which exhibits alternation of generation
