To summarize: The events which led to the divergence of diverse animal groups around 550 MYA. Concept introduction: The diversification among animal groups is believed to have originated from the simplest animals that resembled sponges present in oceans which arose around 570 MYA on Earth. Later aquatic animals diversified into different animals like jellyfishes, worms, and arthropods during the Cambrian period in seas. Aquatic animals were evolved by the time fungi and plants occupied the land and soon after arthropods, chordates and other animals also evolved on land habitats. There are several factors that have led to the diversification of animals.

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Chapter 21, Problem 16WIO

Summary Introduction

To summarize:

The events which led to the divergence of diverse animal groups around 550 MYA.

Concept introduction:

The diversification among animal groups is believed to have originated from the simplest animals that resembled sponges present in oceans which arose around 570 MYA on Earth. Later aquatic animals diversified into different animals like jellyfishes, worms, and arthropods during the Cambrian period in seas. Aquatic animals were evolved by the time fungi and plants occupied the land and soon after arthropods, chordates and other animals also evolved on land habitats. There are several factors that have led to the diversification of animals.

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