U1 - Living Environment Flashcards
(40 cards)
Sampling technique for plants or slow-moving animals
Quadrat
Sampling technique for ground dwelling insects
Pitfall trap
How to make an experiment more reliable
Repeat multiple times and take an average
Why do we sample randomly?
To avoid sample bias
How is energy lost from a food chain?
Movement/ heat / undigested parts
What is the source of energy of all food chains?
The Sun
What are plants called in food chains?
Producer (they make their own food)
What is the process by which plants produce food?
Photosynthesis
What is an animal that only consumes plants?
Herbivore
What is an animal that only consumes other organisms?
Carnivore
What is an animal that consumes plants and organisms?
Omnivore
What is the term for a bacteria or fungus that breaks down dead matter?
Decomposer
What is the useful form of Nitrogen in the soil?
Nitrates
What do plants turn nitrates into?
Protein
When animal and plants die and decompose, what form of Nitrogen is released?
Ammonium
What does ammonium get ‘fixed’ into by bacteria?
Nitrites, then nitrates
How is carbon dioxide removed from the air?
Trees and plants carrying out photosynthesis
What do plants store carbon as?
Glucose (or cellulose/starch)
When plants and animals decomposed, their remains can be transformed by heat and pressure over millions of years. What is this resource?
Fossil fuels (coal, oil, gas)
Process by which fossil fuels are burned in factories/vehicles
Combustion (burning in oxygen)
The number of one species in an ecosystem
Population
All the living species in the ecosystem
Community
All the living and non-living factors of a habitat
Ecosystem
The variety of species in an ecosystem
Biodiversity