Summary A Level Biology Notes - Populations and Ecosystems
100 views 0 purchase
Course
Populations and ecosystem
Institution
AQA
Book
AQA Biology A Level Student Book
Complete AQA A Level Biology notes on populations and ecosystems with diagrams, definitions to support your understanding.
Details include:
Definition of keywords
Predator prey relationships
Investigating populations
Succession
Conservation of habitats
Abiotic An ecologicalfactor that makes uppartof the non biological environmentof
an organism
Abundance Number of individual species in a given space
Biosphere Zone of air land and water where organisms exist
Biotic An ecological factor that makes up part ofthelivingenvironment of an organis
carrying capacity population size that an ecosystem cansupport
community Alltheliving organisms present in an ecosystem at a given time
Ecology study of inter relationships between organisms andtheir environment
Ecosystem Alltheliving and nonliving components of a particular area
Habitat Theplace where an organismnormallylives and which is characterised
by
physical conditions and thetypes of other organisms present
Interspecific competition Competition between organismsof differentspecies
Intraspecific competition competition between organisms of the same species
limitingFactors Avariablethatlimitstherateof a chemical reaction
Microhabitat Smallerunits within a habitat each withtheir own microclimate
Niche The role or function an organism plays intheir ecosystem
Populations Agroupof individuals of thesame species that occupy the same habitat
atthesametime
Predation When one organism is consumed by another
Predator organism thatfeeds on another organism
Predator prey Relationship How population of predator are dependent on eachothe
prey
Prey Organism which is beingfed by other organisms
selection pressure Environmentalforce altering thefrequencies of alleles in a populatio
species Groupofsimilarorganisms that can breedtogether to produce a fertile offspring
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller arguschiu. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.87. You're not tied to anything after your purchase.
