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- #Diversity in Living World
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- #Class 11
Match the following list of animals with their level of organisation:
A. Organ Level p. Pheretima
B. Cellular aggregate level q. Fasciola
C. Tissue level r. Spongilla
D. Organ system level s. Obelia
A-s , B-r , C-p , D-q
A-s , B-q , C-r , D-p
A-q , B-s , C-r , D-p
A-q , B-r , C-s , D-p
Answers (1)
The cellular level of organization:
- It is the most primitive type of organization and is suited for sedentary life-forms, Phylum Porifera shows this type of organisation. Example :Spongilla
Tissue level of organization:
- It is seen in animals belonging to Phylum Coelenterata and Phylum Ctenophora Example :Obelia
Organ level of organization:
- Phylum Platyhelminthes shows organ level of organisation Example: Fasciola
Organ system
- It is seen from Phylum Aschelminthes to Chordates
Hence,
Spongilla belongs to the phylum Porifera. It has cellular level of body organization. Obelia belongs to the phylum Cnidaria. It has tissue level of body organization. Fasciola belongs to the phylum Platyhelminthes. It has organ level of body organization. Pheretima belongs to the phylum Annelida. It has organ system level of body organization.
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