BIO120H1 Chapter Notes - Chapter 4: Cactus, Glossopteris, Glyptodont

74 views4 pages

olivehedgehog936

12 Jun 2012

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

shdhhfhshhpla3806 and 40102 others unlocked

BIO120H1 Full Course Notes

Verified Note

36 documents

Document Summary

Chapter 4 the geography of life:lec 2 the main lesson from this chapter is that only evolution can explain the diversity and distribution of life on continents and islands. Topics included in the chapter include convergent evolution, dispersal to islands and how it favours some groups and not others, human origins in africa, and differences in the biotas of continental vs. oceanic islands. Some of the loneliest places on earth are the isolated volcanic islands of the southern oceans. Alexander selcraig sailing on ship demanded to be put on shore hoping for rescue of the. Clinique ports to take him on from the mas a tierra island. Mas a tierra was unhabited and the only mammals were goats, rats, and cats. After a while selkirk adapted to the ways of life by hunting goats. He was rescued by 1709 spending 4 and a half years there by a english ship and headed t.

Related Questions

This is all the info that the teacher gave us, so just saying it is ambigous is not helpful... instead, especially since college students are spending money on this sight for help so we can learn, why don't you try to help solve the question or if you do not know the answer and can not figure it out, leave your comment blank. Thank you.

Original Question:

Some 40,000,000 years from now the volcanic Erebor Archipelago will form west of the Australian subcontinent (the nearest major landmass). After reading Section 20.4 in your text, contemplate the following geographical data, and answer the questions below:

Island Distance from Australia (km) Size (km²)

North Panem 3502 1544

South Panem 3523 95

Snow 955 1540

Mellark 950 99

Everdeen 789 444

Haymitch 1828 699

A. Based on the Equilibrium Theory of Island Biogeography (MacArthur and Wilson), predict the following and explain your choice (6 points):

Island(s) with highest colonization rates:

Island(s) with lowest colonization rates:

Island(s) with highest extinction rates:

Island(s) with lowest extinction rates:

Island(s) with highest equilibrium species richness:

Island(s) with lowest equilibrium species richness:

B. This model does not always predict the number of species on an island. Examples of one factor influencing the number of species on an island that is not incorporated in this model include finches in the GalÃ¡pagos Islands and honeycreepers and Drosophila in the Hawaiian Islands. What factor is this? (10 points)

fuchsiamule181

QUESTION 3

Which of the following would NOT be a good method for sortingout the evolutionary relationships between a parrot, gorilla,hippopotamus, starfish, and catfish?

		comparing the skeletal anatomy
		examining the habitat in which these organisms live
		looking at embryos for common developmental patterns
		comparing the nucleotide sequence divergence of selectedgenes
		all of the above would provide useful information

10 points

QUESTION 4

Which of these habitats should have the highest number ofendemic species (found there and nowhere else).

		grasslands of the central United States
		Hawaiian islands
		Amazonian rainforest basin
		Mississippi river

10 points

QUESTION 5

Darwin's concept of evolution "the theory of descent withmodification through variation and natural selection" can bedemonstrated by which of the following examples?

		A giraffe stretches his neck to reach higher branches. Theexercise of stretching up strengthens the muscles in the neck andlegs. This ability to stretch is also seen in the giraffe'soffspring.
		A monkey accidently drops her fruit in the salty water of a bay,she recovers the fruit and eats it. She discovers that the fruit iscleaner and tastes better after it has been in the salty water. Shecontinues to wash fruit in the bay before eating. Her offspring seewhat she has done and also wash their fruit in the salty water.Soon the whole population is washing their fruit
		Several turtles hatch from a clutch of eggs buried in the sandon a beach. One of the turtles is the color of the sand, the othersare darker in color. The turtles all scurry to the water, but oneby one the dark turtles are eaten by birds, only the sand coloredturtle survives. When it enters the water the sand color changes toa darker brown. The turtle grows, mates and has offspring that arealso sand colored when they are born
		A female alligator gives birth to a male alligator that has theability to change color to a bright white when it is in cold water.The baby male alligator is quickly spotted by a large bird of preyand eaten

10 points

QUESTION 6

During the Beagle journey, Darwin visited islands,allowing him to compare island species with continental species. Interms of framing his theory of evolution, why was thissignificant?

		Because the island species had both similarities to theircontinental ancestors and unique adaptations to their islandenvironments
		Because the island species no longer shared traits with theircontinental ancestors
		Because the species he saw on the islands had not changed fromtheir ancestral continental form
		Because the island species had very low reproductive andsurvival rates as compared with their continental ancestors

18. The longest field study in evolutionary biology (35 years) is being conducted on Darwin's finches by Rosemary and Peter Grant (Princeton University) on the Galapagos Island of Daphne Major. The study has provided compelling evidence for which of the following? a. Convergent evolution of beak morphology b. Speciation resulting from geographical isolation c. Natural selection in the wild d. Sexual selection on adaptive traits

BIO120H1 Chapter Notes - Chapter 4: Cactus, Glossopteris, Glyptodont

BIO120H1 Full Course Notes

Document Summary

Get access

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Concepts of Biology

Biology

Essentials of Biology

Related Documents

BIO120H1 Chapter Notes - Chapter 4: Continental Drift, Convergent Evolution, Molecular Clock

GEOSC 010 Chapter 13: Divergent Boundaries_ Origin and Evolution of the Ocean Floor

OCS 2008 Chapter : Ocs 2007 Ch3

Related Questions