Question

Give reasons.
Hydra & Sponges do not posses excretory systems.​

Answer 1

Answer:

Animals such as sponges and Hydra do not posses any circulatory system. The water in which they live brings food and oxygen as it enters their bodies. The water carries away waste materials and carbon dioxide as it moves out. ... When our cells perform their functions, certain waste products are released.

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Answer 2

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• Animals such as sponges and Hydra do not posses any circulatory system.
• The water in which they live brings food and oxygen as it enters their bodies.
• The water carries away waste materials and carbon dioxide as it moves out.
• When our cells perform their functions, certain waste products are released.

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