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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
Label the following.
Porifera : Asymmetrical : : Cnidaria : __________
Tentacles are used for capturing the prey.
To which phylum does it belong, if I have a sting to prick?
What is the use of cnidoblast for us?
How do we destroy the harmful insects?
Mesoglea is present in ______.
Define the terms and give one example
Coelom
______ are diploblastic.
Name the following:
A phylum with diploblastic animals.
Alternation of generations in Coelenterata is known as
Provide appropriate technical term in the space provided.
Free-floating form of cnidaria ______.
Match the following:
| Animals | Locomotory Organ |
| a. Octopus | i. Limbs |
| b. Crocodile | ii. Comb plates |
| c. Catla | iii. Tentacles |
| d. Ctenoplana | iv. Fins |
Differentiate between polyp and medusa
Name
An animal with cnidoblasts
Give an example for the following:
Animal, which exhibits alternation of generation
