How did terrestrial animals evolve?

Date: October 28, 2013 Catalyst: Examine the above fossil and

artist’s rendering. Where do you think this organism falls on the timeline of evolution?

Why is it significant?

Agenda

QOTD!

Poster Creation!

Poster Q & A Session!

Timeline of Animal Evolution!

Exit Slip!

Flashcards

QOTDArthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that: !

A) arthropods evolved before vertebrates did. B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates. C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land. D) vertebrates evolved from arthropods. E) arthropods have had more time to coevolve with land plants than have vertebrates.

QOTDArthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that: !

A) arthropods evolved before vertebrates did. B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates. C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land. D) vertebrates evolved from arthropods. E) arthropods have had more time to coevolve with land plants than have vertebrates.

Reminders & Announcements

HW 1 is due Wednesday, October 30. All problems listed for the readings and the additional article annotation and comprehension questions should be completed by then.!

I am currently working to obtain a new code from Pearson for Mastering Biology. As soon as I have that code, you will receive it.

Poster SessionAt this time, finish you posters for your assigned topic. You need the following in you poster:!

1. Significant evolutionary developments!

2. Unique characteristics!

3. One question about your topic for others to answer. For example: Why was the development of a bilateral body plan significant?

Red LightUsing the information gathered today and from last week, answer the following question:!

Use evidence to explain how the process of evolution by natural selection has led to the great biodiversity that we see in both the fossil record and alive today.

Flashcards

Tonight, begin making flashcards for the vocabulary from Chapters 23 and 40. Practice this vocabulary for tomorrow’s class.