Summary
Summary IB Biology Ecology
- Course
- Institution
This document focuses on the 2016 Syllabus of Biology HL in the IB. The topic that is summarized is Ecology - chapter 4 of the syllabus
[Show more]
1 review
By: linushalfar • 7 year ago
Goes so
Seller
Follow
StraatenLI
Reviews received
Content preview
Topic 4: EcologyTopic 4.1: Communities and ecosystems
Ecology – the study of the relationships that living organisms have with each
other and with their natural environment
Individual/species – a group of genetically similar organisms, capable of
breeding and producing fertile offspring
Population – organisms of the same group or species
living in the same geographical area and capable of
breeding
Community – groups of
interacting living organisms
from different populations,
sharing an environment.
Ecosystem – Interaction
between the living
organisms of a specific
environment, with the non-
living (e.g. water, air)
components to form an
operating system
Biome – A geographical
area of varying size – within ecosystems whose communities have adapted to the
small differences in climate and environment (e.g. desert, tundra, savannah)
Biosphere – Is the global sum of all ecosystems on earth, a closed system and
largely self-regulating.
In terms of nutrition and feeding – there are different types/groups of organisms…
AUTOTROPH (by yourself, to feed)
- An organism that is capable of feeding itself – by converting inorganic
molecules (C and H not present in same molecule) into organic compounds,
using photosynthesis or chemosynthesis as the energy conversion process.
Autotrophs are also known as producers (at the base of the food chain)
- Autotrophs obtain inorganic nutrients from the abiotic environment and
convert them into organic compounds. E.g. 6CO₂+6H₂O = glucose + 6O₂
- Nutrient recycling ensures that all elements are made available through
cyclical processes:
Carbon cycle
Oxygen cycle
Nitrogen cycle
Water cycle (rain, soil, river, sea, vaporization, and again)
HETEROTROPH (different, to feed)
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 StraatenLI. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.22. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52510 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now