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प्रश्न
Give scientific reasons.
Our body irritates if it comes in contact with jelly fish.
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उत्तर
- Jellyfish are a coelenterate that has cnidoblasts bearing tentacles.
- These cnidoblasts inject toxins to paralyse the prey at the time of feeding.
- When jellyfish come in contact with our bodies, this toxin is released, causing a reaction to our skin.
Therefore, our body gets irritated when we come in contact with jellyfish.
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संबंधित प्रश्न
Sketch, label and classify a butterfly.
Porifera : Asymmetrical : : Cnidaria : __________
Tentacles are used for capturing the prey.
The body of the animal in which phylum is radially symmetrical and diploblastic?
How does the animal in the figure protect itself?
To which phylum I belong to, if I have cnidoblast-bearing tentacles?
What is the use of cnidoblast for us?
How do we destroy the harmful insects?
Mesoglea is present in ______.
Match the following.
| PHYLUM | EXAMPLES | ||
| (A) | Coelenterata | (i) | Snail |
| (B) | Platyhelminthes | (ii) | Starfish |
| (C) | Echinodermata | (iii) | Tapeworm |
| (D) | Mollusca | (iv) | Hydra |
What is nematocyst?
Why coelenterates are called diploblastic animals?
Name the following:
A phylum with diploblastic animals.
How is the body wall of coelenterates arranged?
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
