BIO211H5 Lecture Notes - Quadrate Bone, Middle Ear, Eardrum

48 views5 pages

viridiancockroach622

22 Oct 2012

School

Department

Course

Professor

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

Document Summary

The exam will cover everything we"ve talked about since the last exam. You"ll have the same number of questions in the same format. Make sure you bring a pencil, not a pen. The marks will be up by two or three. This should give you enough time to make a decision about dropping the course. Today, we"ll talk about the carboniferous, the permian, and maybe a little bit of the triassic. The permian, which lasted from 290-248 million years ago, ends with the biggest extinction in earth"s history. We"ve estimated that 98% of all species went extinct at the end of the permian. In the carboniferouswell, around the very end of the devonian and the beginning of the. These are the groups of plants which become pine trees and conifers. Ferns are one of the dominant groups of plants at this time. The lycopods are giant club mosses that look like trees but are actually an example of convergent evolution.

Related Questions

QUESTION 3

Wild cherry (Prunus avium) is a tree that is native toEurope and parts of Asia and Africa. It has been widely cultivatedby humans for its fruit, which are also attractive to birds. Basedon this information, wild cherry is most closely related to whichof the following plants?

		liverworts
		mosses
		pine trees
		roses

10 points

QUESTION 4

Modern evidence for the first major explosion of land plants canbe seen in the

		rich carboniferous coal deposits
		sphagnum peat bogs
		oxygen content of the atmosphere
		increases in carbon dioxide emissions

10 points

QUESTION 5

Glittering wood-moss (Hylocomium splendens) is aspecies of moss that can be found in Alaska and Canada. Based onwhat you know about mosses, what is NOT true of the female gametesof glittering wood-moss?

		They are haploid.
		They lack flagella.
		They are produced when the gametophyte undergoes meiosis
		They are housed in archegonia

10 points

QUESTION 6

While conducting a plant diversity survey in a temperaterainforest in Washington State, you come across a number ofindividuals of a low-lying plant species. Back at the lab, testsindicate that the majority of the plant material is haploid. Theplant you discovered is likely most closely related to

		complex streptophyte algae
		sphagnum moss
		conifers
		roses

Which of the following was one of the earliest changes thatcontributed to the success of plants transitioning from aquatic toterrestrial ecosystems?
a. The ingestion of photosynthetic bacteria, enabling plants tophotosynthesize
b. The development of vessels to transport water
c. The development of roots to obtain nutrients and water fromsoil
d. Spores or zygotes encased in a tough coat to resist dryingout
e. The development of flowers to attractpollinator

Is it B or D? I would assume D is the seed of a gymnosperm.According to the info below, that came after the evolution ofvessels to transport water.

Please explain your answer

http://www.clas.ufl.edu/users/pciesiel/gly3150/plant.html

The oldest fossils reveal evolution of non-vascular plants bythe middle to late Ordovician Period (~450-440 m.y.a.) on the basisof fossil spores.
These first non-vascular, "amphibious" plants, were limitedprimarily to lowland, wet areas, of temperate to tropicallatitudes. Still most land areas were barren.
By some 420 m.y.a., seedless vascular plants evolved which werebigger and more diverse than their ancestors. These seedlessvascular plants required water for sperm to reach the eggs and werestill limited in their distribution to wet climates. These seedlessplants grew to tree size, reaching 10 or more meters by the lateDevonian (~370 m.y.a.). Lowland swampy environments had abundantseedless plants.
After the 1st land plants evolved (approximately 450 m.y.a.)they underwent rapid expansion and radiation with great forests byMiddle DevonianPeriod. (385 m.y.a.). Although these forests were limited in theirextent, vast quantities of organic material were deposited andpreserved in swampy environments. Through time and burial, thisorganic material was converted to coal, forming the firstsignificant coal deposits of Earth history.
At a similar time (late Devonian, ~375-360 m.y.a.), seedbearing gymnosperm plants (non-flowering) evolved. The developmentof the seed allowed plants to proliferate and spread to drier areasof continents. Gymnosperms became the dominant plant type between~290 to 145 m.y.a. and are still common today.
During the final days of the dinosaurs (Cretaceous), the finalchapter of plant evolution began. This was the evolution offlowering plants (angiosperms). During the Cretaceous Period,angiosperms began overcoming non-flowering plants as the dominantland plants. Since this time they have become the dominant landplants.

scarletgoldfish67

QUESTION 11

Discuss the benefits of tropical rainforests.

QUESTION 12

A tundra is a boreal forest in the N. hemisphere forming acontinuous belt of coniferous trees across N. America throughEurasia.

True

False

QUESTION 13

The most significant threat to biodiversity today is________________.

		the killing of competing species
		the elimination of habitat
		the introduction of foreign species.
		the reduction of sperm counts.
		the acidification of the oceans.

QUESTION 14

Macronutrients include carbon, phosphorous, oxygen, sulfur,hydrogen, nitrogen and zinc.

True

False

QUESTION 15

The Law of Conservation of Matter means that everything isaccounted for but there is no mass balance.

True

False

QUESTION 16

What is the term that refers to the range of animal and plantspecies and the genetic variability among those species?

		Biome
		Ecosystem
		Biodiversity
		Community

QUESTION 17

Describe traditional methods for enriching or recoveringsoils.

QUESTION 18

Explain the various techniques involved in gene transfer amongplants.

QUESTION 19

Which of the following is true about phosphates?

		They occur as a gas.
		Phosphate rocks are a renewable resource.
		The sedimentary cycle prevents the leaching of phosphorus fromrocks.
		Plants are unable to take up released phosphates in rootsbecause of some unknown mechanism.
		Phosphorous is the main element in compounds such as adenosinetriphosphate (ATP).

QUESTION 20

A mammal population that is low in diversity and includes bisonmay be found in the:

		Tropical savannahs
		Temperate grasslands
		Temperate forest
		Desert
		Taiga

sapphiremanatee76

BIO211H5 Lecture Notes - Quadrate Bone, Middle Ear, Eardrum

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

BIO211H5 Lecture Notes - Amniote, Yolk Sac, Lungfish

BIO211H5 Lecture Notes - Morganucodon, Nasal Concha, Vertebral Column

BMEN 515 Lecture Notes - Sirius Passet, Cambrian Explosion, Burgess Shale

Related Questions