1. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings PowerPoint Lectures for Biology: Concepts and Connections, Fifth Edition – Campbell, Reece, Taylor, and Simon Lectures by Chris Romero Chapter 18 The Evolution of Animal Diversity

2. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.0 Diversity of animal life - arose as natural selection shaped animals by 18.1 Animals - eukaryotic, multicellular - that

3. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.2 Sponges - have a relatively simple, - invertebrates ( - have no true - resemble a thick-walled sac - perforated with - thru which water INVERTEBRATES

4. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.3 Cnidarians - are animals with - ex: - are carnivores - use tentacles to - and then push it

5. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.4 Tapeworms - long, - parasitic on - including

6. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.5 Molluscs - Gastropods - the largest group of - ex. - - Bivalves - shells in two halves - ex. -

7. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings Cephalopods - fast, agile - ex. - - all have large brains & sophisticated - giant squid is largest of

8. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.6 Annelids - segmented - a segmented body resembling a series of - earthworms and - eat their way - _________________ and _____________ it as they go

9. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.7 Arthropods - jointed - exoskeleton: - external skeleton that _______________ & provides - Crustaceans - ex. -

10. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.8 Insects - t hree-part body consisting of: - - h ead - - t hree

11. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.9 Echinoderms - have - ex. - -

12. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.10 Chordata - our own phylum - characteristics of chordates -

13. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.11 Jawed vertebrates (with gills & paired fins) - ex. - - flexible skeleton made of

14. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.12 Amphibians - first vertebrates with - allowing movement - ex. - Larval stage (___________________): -a legless, aquatic algae-eater with Adult: -a terrestrial insect eater with

15. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.13 Reptiles ex. - Reptile adaptations for terrestrial life - scaly, waterproof skin - body won’t - lungs for - __________________________ (terrestrially adapted egg) Dinosaurs - reptiles who died out - but left ________________ as descendants

16. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.14 Birds - feathered reptiles with - likely evolved from small, two-legged - _______________ evidence - Archaeopteryx - have relatively large brains and - male and female cooperation in -

17. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings 18.15 Mammals –Hair - –Mammary glands - –Respiratory and –Differentiation of teeth for –Large –Long period of

18. Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings Three main groups of living mammals ______________________ - lay eggs - ex: ______________________ - complete development outside the mother’s body - ex: ______________________ - complete development before birth - ex.