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प्रश्न
Real organs are absent in
विकल्प
Mollusca
Coelenterata
Arthropoda
Echinodermata
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उत्तर
Coelenterata
Explanation -
Phylum Coelenterata (Cnidaria) has tissue level of body organisation i.e. the cells are grouped together to form tissues, which then perform specific functions. Tissues are not further organised in organs. Therefore, real organs are absent in Coelenterata. On the other hand, in the phyla Arthropoda, Mollusca and Echinodermata, there is organ system level of body organisation i.e. tissues are organised to form organs, which together form an organ system.
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संबंधित प्रश्न
Identify me.
I am diploblastic and acoelomate. Which phylum do I belong to?
Give scientific reasons.
Our body irritates if it comes in contact with jelly fish.
Label the following.
Give scientific reason.
Our body irritates if it comes in contact with a jellyfish.
To which phylum does it belong, if I have a sting to prick?
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 |
Why coelenterates are called diploblastic animals?
What is polymorphism?
Name
An animal with cnidoblasts
