Class Notes (922,649)
CA (542,912)
UTM (25,004)
Biology (2,327)
BIO207H5 (65)
Lecture 9

lecture 9 notes

1 Page
141 Views

Department
Biology
Course Code
BIO207H5
Professor
Maria Arts

This preview shows half of the first page. Sign up to view the full page of the document.
Bio205 Lecture 8 contd
14.10 Animal prey have evolved..:
-Behaviour: works in kin selection
-distraction displays:
-Group living: young are protected in the middle and less attack on vulnerable prey
-Cicadas: predation occurs much later then coming out of the ground, it provides advantage
as predator response is later then emergence of cicadas
-Predator satiation: Most of the offspring are produced in a short period of time
14.11 Predators have evolved efficient hunting tactics:
-stalking: search time takes longer as u have to follow ur prey
-pursuit: takes less time because it takes less time to follow and look for prey
-predators may use camouflage as a way to lure prey
-May also mimic the prey species (bumblebee)
-Reduce energy of plants because its lost its parts (roots and leaves etc)
-Make the plant vulnerable to diseases.
14.13 Plants have evolved..:
-secondary compounds: makes the leaves taste bad or toxic so deter herbivore but some
herbivores have adapted to break down those toxic compounds.
DEFENSIVE COLORATION:
-Natural selection: evolves by increasing the chances of survival of the individuals in
which they are found
-Adaptation: is a genetic change that occurs over generations in response to natural
selection
LECTURE 9
Parasitism: Relationship between different species
15.1-parasites draw resources from host organism:
-Co-evolutionary arms race egg mimicry, egg ejection
-e.g. mosquitoes and blood feeding bats
-Hemi parasitic: plants photosynthesize and contain chlorophyll (i.e. mistletoe)
-Holoparasitic: plants are nonphotosynthetic (i.e. dodder, broomrape)
-completely dependent on host for survival
-Ectoparasites: -on roots, steam, leaves
-Endoparasites: penetrate roots, bark, etc.
15.4-Transmission between hosts can
-Vectors also transmit parasites among plants: Dutch elm disease, mistletoe
-Grooming or greening by mammals and birds.
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Bio205 Lecture 8 contd 14.10 Animal prey have evolved..: -Behaviour: works in kin selection -distraction displays: -Group living: young are protected in the middle and less attack on vulnerable prey -Cicadas: predation occurs much later then coming out of the ground, it provides advantage as predator response is later then emergence of cicadas -Predator satiation: Most of the offspring are produced in a short period of time 14.11 Predators have evolved efficient hunting tactics: -stalking: search time takes longer as u have to follow ur prey -pursuit: takes less time because it takes less time to follow and look for prey -predators may use camouflage as a way to lure prey -May also mimic the prey species (bumblebee) -Reduce energy of plants because its lost its parts (roots and leaves etc) -Make the plant vulnerable to diseases. 14.13 Plants have evolved..: -secondary compounds: makes the leaves taste bad or toxic so deter herbivore but some herbivores have
More Less
Unlock Document


Only half of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit