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Lecture 5 Animal Evolution – The Invertebrates

Lecture 5 Animal Evolution – The Invertebrates. Molting…. Periodic shedding of the old cuticles which is replaced by the new cuticle. Occurs under hormonal control. Hormones induce a soft new cuticle to form under the old one.

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Lecture 5 Animal Evolution – The Invertebrates

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  1. Lecture 5Animal Evolution – The Invertebrates

  2. Molting….. • Periodic shedding of the old cuticles which is replaced by the new cuticle. • Occurs under hormonal control. • Hormones induce a soft new cuticle to form under the old one. • Body mass increases by the uptake of water/air, repetition, new cuticle harden. • This trait is also shared by roundworms.

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