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LoE - Sampling
Life on Earth - Topic 3 - Factors affecting Biodiversity & Sampling Techniques
Question | Answer |
---|---|
Define biodiversity. | The variety and abundance of living things. |
What is the importance of biodiversity? | Variety allows organisms to adapt to changing environmental conditions. |
What 3 things distinguish a biome? | Climate, flora & fauna |
What are the 2 main factors affecting global distribution of biomes? | Rainfall & temperature |
What do you call the 'living' factors that affect biodiversity? | Biotic factors |
What do you call the 'non-living' factors that affect biodiversity? | Abiotic factors |
Give 2 examples of how humans can impact biodiversity. | Pollution & deforestation |
Give 3 examples of biotic factors. | Predation, grazing, disease |
Name 4 abiotic factors. | Temperature, moisture, light intensity & pH |
What sampling technique would be used to sample the insects on a forest floor? | Pitfall trap |
What sampling technique would be used to sample the plants growing in a field? | Quadrat |
How would you correctly use a quadrat? | Throw it randomly and repeat many times |
What could be an error when setting up a pitfall trap? | Not camouflaging it properly. |
What would you use to measure light intensity? | Light meter |
What would you use to measure temperature? | Thermometer |
What would you use to measure the moisture or pH of the soil? | Moisture or pH meter |
What could an error be when measuring light intensity? | Casting a shadow over the light meter |
What could an error be when measuring the moisture or pH of the soil? | Not wiping the probe between each use |