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Animal Evolution: Understanding Invertebrate Reproduction and Development Stages

This lecture explores the fascinating world of invertebrate evolution, focusing on their unique reproductive cycles. Invertebrates are often hermaphrodites, capable of producing both eggs and sperm. The lecture highlights how sperm are released in cloud-like formations, leading to the formation of zygotes that develop into ciliated larvae. These ciliated larvae represent a free-living and sexually immature stage in the development of animals, showcasing the diversity and complexity of invertebrate life cycles.

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Animal Evolution: Understanding Invertebrate Reproduction and Development Stages

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Presentation Transcript

  1. Lecture 5Animal Evolution – The Invertebrates

  2. Their Reproduction Cycle • Are hermaphrodite; produce eggs and sperms • Sperms released in the form of clouds • A zygote develops into ciliated larvae • Ciliated larvae – free-living, sexually immature stage of animal development.

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