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 haemocoel? Which groups of animals have haemocnel?
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The blood-filled cavity consisting of spaces in between organs is known as haemocoel. Examples. Mollusca and Arthropoda.