BIO120H1 Lecture Notes - Lightning, Conifer Cone, Pioneer Species

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BIO120H1 Full Course Notes

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science also perceives with theories, and generalization. biological integration species playing a role with another (depend on each other) inidividualistic hypothesis- the reason species work together b/c they have similar ranges of tolerancesame temp, habitatetc. invective, and decades later, by data (gradient analysis- ) graph d is what whitticher found on slide 9. Each pseices behaves individualistically, do not respond to each others presence but the envornment conditions that vary. another piece of evidence- post-glacial migrations of tree species. Howveer, different tree specied went along different path, they differently. vegetation is primaily individualistic: envornment affects them not the presence of other vegetation. pioneer species(stars with r-strategists) seral stagesclimax stage (end) plants attract birds, bird bring in seeds new colonists to keep succession moving along. primary succession- new species colonizes a placeeventually grow into a lot more vegetation. secondary succession: disturbance is caused (fire, logging), and then vegetation grows back.

Related Questions

Essay Inquiry about Disease Hypothesis

Thereis an unforseen epidemic spreading. This disease is characterizedby an increase of birth defects early in development affecting awide range of species from fruit flies,poultry,primates etc.... theillness may exhibit different mechanisms of disease in differentspecies. The early stages ofthe outbreak harbers little solid research to direct aninvestigation but some early testing indicates the presence of anew virus in infected patients. Government agencies have inquiredyou to come up with several hypotheses about the cause of thisdisease.

Developexactly 3 hypotheses. For each hypothesis you must explainthe gene or genes affected as specifically as possible and shouldalso explain the involvement of the virus and any cell types thatare particularly important. Make these hypotheses logical, to thepoint, and extremely different from each other to give researchersworldwide as many possibilities to investigate as possible.Eachhypothesis should be 2 (max 3) sentences inlength.

Each Hypothesis must:
1.) Present a logical and distinctexplanation of the unique mutation
2.) Explain the role of thevirus
3.) Explain the distinct effect on thegenes of the infected species
4.) Contain a very different mechanismcompared to the other two hypotheses

beigechimpanzee338

7/ Be able to explain why the following statement is true:Natural Selection works on individuals while evolution works onpopulations over generations. Or to put it another way: Individualsdo not evolve, populations do.

8/ How can evolution explain the formation of complex structuressuch as the eye or the flagella motor?

9/ What causes variation in a species? To putthis another way: all humans have the same genes, yet we do notlook alike. What is the reason for thephenotypicdifferences between individuals of thesame species? What is genetic recombination?

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Why does sodium react so easily with chloride to make sodium chloride?

	A.	Both atoms have incomplete outer orbitals and they complete each other's when they combine
	B.	Sodium chloride is table salt, one of the most reactive molecules in living things.
	C.	Opposites attract.
	D.	Both atoms have outermost shells full of electrons.
	E.	Sodium chloride is highly explosive.

What is meant by the statement âlife is diverse?â

	A.	There are many living organisms on Earth
	B.	Each living thing is a unique individual.
	C.	All living things are related to each other.
	D.	There are many different kinds of living organisms on Earth
	E.	There are many places to live on Earth.

What is considered the fundamental unit of life?

	A.	DNA
	B.	Carbohydrates
	C.	A molecule
	D.	Nucleic acid
	E.	A cell

In evolution, why is it important that individuals vary from each other?

	A.	Variation allows some individuals to do better than others, so those variations are selected for.
	B.	If variations or mutations are extreme enough, new species can result.
	C.	Variations are important because individuals have to change through time.
	D.	Variations are important because they're inherited.
	E.	Variation gives every individual an equal chance of surviving so they can be selected for.

If every species on Earth came from some other species, if you look backwards in time, what is the logical conclusion?

	A.	Species do not change through time.
	B.	All species are unique.
	C.	Species cannot adapt to environmental changes.
	D.	All species will eventually go extinct.
	E.	All species are related.

BIO120H1 Lecture Notes - Lightning, Conifer Cone, Pioneer Species

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