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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
Label the following.
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?
To which phylum we belong to, if we are marine/aquatic animals?
Draw a neat and labelled diagram.
Hydra
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?
Name the following:
A phylum with diploblastic animals.
Alternation of generations in Coelenterata is known as
Which of the following traits is not shared by both sea anemones and jelly fish?
What is metagenesis? Mention an example which exhibits this phenomenon.
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 |
Name
An animal with cnidoblasts
Give an example for the following:
Animal, which exhibits alternation of generation
