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प्रश्न
Give scientific reason .
Our body irritates if it comes in contact with jelly fish.
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
Sketch, labell and classify Hydra .
Porifera : Asymmetrical : : Cnidaria : __________
Tentacles are used for capturing the prey.
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Give scientific reason.
Our body irritates if it comes in contact with a jellyfish.
What is the use of cnidoblast for us?
Draw a neat and labelled diagram.
Hydra
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Match the following.
PHYLUM | EXAMPLES | ||
(A) | Coelenterata | (i) | Snail |
(B) | Platyhelminthes | (ii) | Starfish |
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Real organs are absent in
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Coelom
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A phylum with diploblastic animals.
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a. Octopus | i. Limbs |
b. Crocodile | ii. Comb plates |
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Animal, which exhibits alternation of generation