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
What is alternation of generation?
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When asexual generation (polypoid generation) and sexual generation (medusoid generation) alternate each other in the life cycle, it is called alternation of generation or metagenesis, e.g. Obelia and other cnidarians.