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प्रश्न
How do we destroy the harmful insects?
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उत्तर
Tentacles are useful for capturing the prey, whereas cnidoblasts penetrate the skin as a defensive action and inject toxins into the body of the harmful insects thus destroying them.
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संबंधित प्रश्न
Give scientific reason .
Our body irritates if it comes in contact with jelly fish.
Sketch, labell and classify Hydra .
Tentacles are used for capturing the prey.
The body of the animal in which phylum is radially symmetrical and diploblastic?
To which phylum we belong to, if we are marine/aquatic animals?
Draw a neat and labelled diagram.
Hydra
Mesoglea is present in ______.
State whether true or false. If false, correct the statement.
Canal system is seen in coelenterates.
Match the following.
| PHYLUM | EXAMPLES | ||
| (A) | Coelenterata | (i) | Snail |
| (B) | Platyhelminthes | (ii) | Starfish |
| (C) | Echinodermata | (iii) | Tapeworm |
| (D) | Mollusca | (iv) | Hydra |
What is nematocyst?
______ 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
