Advertisements
Advertisements
Question
Real organs are absent in
Options
Mollusca
Coelenterata
Arthropoda
Echinodermata
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Label the following.
Porifera : Asymmetrical : : Cnidaria : __________
The body of the animal in which phylum is radially symmetrical and diploblastic?
Give scientific reason.
Our body irritates if it comes in contact with a jellyfish.
Draw a neat and labelled diagram.
Hydra
What is nematocyst?
Define the terms and give one example
Coelom
______ are diploblastic.
How is the body wall of coelenterates arranged?
Name
An animal with cnidoblasts
