Chapter B16- Adaptations, Interdependance and Competition Flashcards Preview

GCSE AQA Biology > Chapter B16- Adaptations, Interdependance and Competition > Flashcards

Flashcards in Chapter B16- Adaptations, Interdependance and Competition Deck (3)
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1
Q

What is a population only made of?

What is a community made up of?

What are biotic factors?

What are some examples of biotic factors?

What are abiotic factors?

What are the seven abiotic factors?

What is an ecosystem the interaction of?

What must organisms require to survive and reproduce and from where?

What four things do plants in a community or habitat often compete with each other for?

A

One species

Different populations

Living factors that affect a community

Eg food, disease, new predators

Non-living factors that affect a community

Carbon dioxide
Oxygen levels in water
Wind intensity
Soil ph
Moisture
Light intensity
Temperature

Living things

The interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment

A supply of materials from their surroundings and from the other living organisms there

Light and space and for water and mineral ions from the soil.

2
Q

What three things do animals often compete with each other for?

What four things does each plant species depend on other plant species for within a community?

What is interdependence?

What is a stable community?

What does this then lead to?

What are the four biotic factors that can affect a community?

What do features (or adaptations) of organisms allow them to do?

What three types may these adaptations be?

What are extremophiles?

What is an example of an extremophiles?

A

Food, mates and territory

Food, shelter, pollination and seed dispersal

When if one species is removed it can affect the whole community

A community where all the species and environment factors are in balance

Population sizes remain fairly constant

  • Availability of food
  • New predators arriving
  • New pathogens
  • One species outcompeting another so the numbers are no longer sufficient to breed

Enable them to survive in the conditions in which they normally live

Structural, behavioural or functional

Organisms that live in environments that are very extreme, such as high temperature, pressure or salt concentration

Bacteria living in deep sea vents.

3
Q

What is a transect and what does it show?

What is another name for a transect?

What is change in abundance measured in?

What happens to the transect string?

What is a quadrat and what can it be used for?

A

A string (or similar) to show the change in abundance of organisms from one area to another

Belt transect

Percentage per metres squared (% per m2)

It is marked at every metre

A quadrat (wire rectangular mesh) can be placed at every metre and the percentage of each species measured.