AQA GCSE Biology. Topic 7 – Ecology

I have gone through the specification and these are the bits the examiners want you to know with links to my YouTube videos and other websites to help you understand any bits that are confusing. 

 

Whole topic summary video

Quick fire questions for this topic

 

To get all the quick-fire questions, Knowledge checklists, key words, equations and units sheets and 200 pages of FREE awesomeness head to my website and download your revision guide https://www.primrosekitten.com/collections/all Amazon will kindly print it off for you or you can treat yourself to the extended version,  with another 100 pages of science questions. 

  

AQA Standard Revision Guide - Paperback (190 pages) http://amzn.to/2kw8DGb 

AQA Extended Revision Guide - Paperback (291 pages) http://amzn.to/2g1OdTN

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AQA Biology

1 –  Cell biology

2 –  Organisation

3 –  Infection and response

4 –  Bioenergetics

5 –  Homeostasis and response

6 –  Inheritance, variation and evolution

7 –  Ecology

 

Specification statement

 

These are the bits the exam board wants you to know, make sure you can do all of these…

Bits to help if you don’t understand

Primrose Kitten

Other places

I can describe the levels of organisation in an ecosystem

 

 

I can define the term community

 

 

I can describe interdependence in a community

 

 

I can describe competition in a community

 

 

I can define the term ecosystem

 

 

I can describe what an organism needs to survive and reproduce

 

 

I can describe what different organisms compete for

 

 

I can define the term abiotic factor

 

 

I can recall a list of abiotic factors including; light intensity, temperature, water levels, pH, ion content, wind, carbon dioxide and oxygen levels

 

 

 

I can describe how a change in abiotic factors could affect a community

 

 

I can define the term biotic factor

 

 

I can describe how a change in biotic factors could affect a community

 

 

I can recall a list of biotic factors including; food, predators and pathogens.

 

 

I can define the term adaptation

 

 

I can describe why animals and plants need adaptations

 

 

I can define the term extremophile

 

 

I can give examples of plant and animal adaptations

 

 

I can describe where the biomass on Earth comes from

 

 

I can draw a food chain

 

 

I can explain where the energy is a food chain comes from

 

 

I can describe how to use a quadrate

 

 

I can describe how to use a transect

 

 

I can describe how to determine the abundance and distribution of species in an ecosystem

 

 

I can define the term producer

 

 

I can define the term primary consumer

 

 

I can define the term secondary consumer

 

 

I can define the term tertiary consumer

 

 

I can define the term prey

 

 

I can describe the carbon cycle

https://youtu.be/Uoqp7QjWW-M

 

I can describe the water cycle

https://youtu.be/Dt25c1VODSE

 

I can recall that materials are recycled through biotic and abiotic part of an ecosystem and provide building blocks for the future.

 

 

I can describe the role of microorganisms in cycling materials

 

 

 

I can define the terms decay and decomposition

Biology only

 

 

I can describe how differences in temperature can affect the rate of decomposition

Biology only

 

 

I can describe how differences in oxygen can affect the rate of decomposition

Biology only

 

 

I can describe how differences in water can affect the rate of decomposition

Biology only

 

 

I can explain why gardeners compost

Biology only

 

 

I can describe how decay can lead to the production of biogas

Biology only

 

 

I can evaluate the impact of environmental changes (including temperature, water and the atmosphere) on the distribution of a species

Biology only

 

TuitionKit http://bit.ly/2yfsyvO

I can define the term biodiversity

 

TuitionKit http://bit.ly/2xpTFpN

I can explain the needs for biodiversity

 

I can describe the impact that humans have on biodiversity

 

 

I can explain the rise in pollution

 

 

I can describe the range of different sources of pollution, including; in water, in air and in land

 

TuitionKit http://bit.ly/2f2cbdE

I can describe the effect that pollution has of plants and animals

 

 

I can describe the impact that humans have on land use and the effect this has on plant and animal life

 

TuitionKit http://bit.ly/2h6qsdE

I can describe the impact of the destruction of peat bogs

 

 

I can describe the impact of deforestation

 

TuitionKit http://bit.ly/2h71jzj

I can recall the reasons for deforestation

 

I can describe the biological consequences of global warming

 

TuitionKit http://bit.ly/2xaBX9x

I can recall the gases that contribute to global warming

https://youtu.be/y5PZ1RN5mt0

 

I can describe how humans can have a positive and a negative impact on biodiversity

 

 

I can discuss the range of programmes that aim to reduce the negative effect of humans on biodiversity

 

 

I can define the term trophic level

Biology only

 

 

I can use number to represent trophic levels

Biology only

 

 

I can describe the differences between the trophic levels

Biology only

 

 

I can describe the role of decomposers

Biology only

 

 

I can construct a pyramid of biomass

Biology only

 

 

I can interpret a pyramid of biomass

Biology only

 

 

I can explain how energy is lost between trophic levels

Biology only

 

 

I can recall that roughly 10% of the energy is transferred to the next trophic level

Biology only

 

 

I can define the term food security

Biology only

 

TuitionKit http://bit.ly/2y5FraQ

I can explain the factors affecting food security

Biology only

 

I can describe the need to find sustainable methods for food production

Biology only

 

 

I can describe ways to improve the efficiency of food production

Biology only

 

 

I can describe why some farmers use high protein foods

Biology only

 

TuitionKit http://bit.ly/2x4Yq8I

I can describe the need for sustainable fisheries

Biology only

 

TuitionKit http://bit.ly/2yf2l0f

I can explain the methods used to keep fish stocks at a sustainable level

Biology only

 

 

I can describe the advances in biotechnology as they apply to agriculture

Biology only

 

TuitionKit http://bit.ly/2xHnALf

I can describe that microorganism can be cultured for food

Biology only

 

 

 

AQA Chemistry

1 – Atomic Structure and the Periodic Table

2 – Bonding, Structure and the Properties of Matter

3 – Quantitative Chemistry

4 – Chemical Changes

5 – Energy Changes

6 – The Rate and Extent of Chemical Change

7 – Organic Chemistry

8 – Chemical Analysis

9 – Chemistry of the Atmosphere

10 – Using Resources

 

 

AQA Physics

1 –  Energy

2 –  Electricity

3 –  Particle Model of Matter

4 –  Atomic Structure

5 –  Forces

6 –  Waves

7 –  Magnetism and Electromagnets

8 –  Space Physics