Lecture 5 animal evolution the invertebrates
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Lecture 5 Animal Evolution – The Invertebrates. Their body plans. Divided into forebody & hindbody . Forebody appendages : four pair of legs, pair of pedipalps with sensory roles & a pair of chelicerate that wound/ put venom into prey. Hindbody appendages :

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Lecture 5 animal evolution the invertebrates

Lecture 5Animal Evolution – The Invertebrates


Their body plans
Their body plans

  • Divided into forebody & hindbody.

  • Forebody appendages:

    • four pair of legs, pair of pedipalps with sensory roles & a pair of chelicerate that wound/ put venom into prey.

  • Hindbody appendages:

    • spin out silk threads for webs and egg cases.

  • Open circulatory system-blood pumped into tissues, blood received through small openings in its wall.

  • Have Malphigian tubules


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