NCERT Important Questions Class 9 Science biology Chapter 7
Important NCERT Extra Questions
Chapter 7 Diversity in Living Organisms
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
How do poriferan animals differ from coelenterate animals?
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Porifers differ from Coelenterata in following characters:
Porifers:
1. Cellular level of organisation.
2. Have a canal system.
3. Digestion by choanocytes.
4. Do not have nematocysts.
5. Do not exhibit the phenomenon polymorphism.
Coelenterata:
1. Tissue level of organization.
2. Do not have a canal system.
3. Choanocytes are absent.
4. Have nematocysts.
5. Exhibit the phenomenon of polymorphism.