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प्रश्न
Give scientific reason .
Our body irritates if it comes in contact with jelly fish.
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उत्तर
Jelly fish has special cells on its tentacles called cnidoblasts. These cnidoblasts contain toxins which is a protective mechanism shown by organisms belonging to the phylum Cnidaria. On touching the jelly fish, this toxin is released which results in irritating of the body.
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संबंधित प्रश्न
Porifera : Asymmetrical : : Cnidaria : __________
Tentacles are used for capturing the prey.
How does the animal in the figure protect itself?
Give scientific reason.
Our body irritates if it comes in contact with a jellyfish.
To which phylum I belong to, if I have cnidoblast-bearing tentacles?
What is the use of cnidoblast for us?
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?
Real organs are absent in
What is metagenesis? Mention an example which exhibits this phenomenon.
Provide appropriate technical term in the space provided.
Free-floating form of cnidaria ______.
Provide appropriate technical term in the space provided.
Stinging organ of jelly fishes ______.
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
