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प्रश्न
What is nematocyst?
एका वाक्यात उत्तर
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उत्तर
The stinging cells present at tentacles of aquatic animals like jelly fish, hydra, etc in phylum coelenterata is called nematocyst (cnidoblast)
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संबंधित प्रश्न
Give scientific reasons.
Our body irritates if it comes in contact with jelly fish.
To which phylum does it belong, if I have a sting to prick?
How do we destroy the harmful insects?
Match the following.
| PHYLUM | EXAMPLES | ||
| (A) | Coelenterata | (i) | Snail |
| (B) | Platyhelminthes | (ii) | Starfish |
| (C) | Echinodermata | (iii) | Tapeworm |
| (D) | Mollusca | (iv) | Hydra |
Why coelenterates are called diploblastic animals?
Real organs are absent in
How is the body wall of coelenterates arranged?
Alternation of generations in Coelenterata is known as
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
