Which term describes organisms, such as plants or algae, that make their own food?
Why can plants and algae make their own food?
Which term describes organisms that get their food by eating other organisms?
cells contain chlorophyll/carry out photosynthesis
Which term describes animals that eat plants or algae?
Which term describes animals that kill and eat other animals?
Name a type of diagram that shows the feeding relationships between organisms.
food chain/food web
Which scientific term means all the organisms and the environment they interact with?
Which scientific term means all individuals of the same species living in a particular area?
Which piece of equipment could be used to investigate the number of plants in an area?
Which term describes all the animals, plants, other organisms, rain, soil and other factors in a rainforest?
Which term describes all the organisms living in a lake?
Groups of the same species living in different areas are different … ?
In a food web, which term describes organisms that feed on plants?
What term describes how one species needs other species in the same habitat for its survival?
In a study of abundance of small plants in a field, samples would be taken using which piece of equipment?
What is the scientific term for the feeding levels in a food chain?
Which type of diagram displays the biomass in all the different levels of a food chain?
pyramid of biomass
Which term measures the dry mass of all living tissue in an organism?
Name the source of energy that is transferred to plants.
Which term describes any living part of an ecosystem?
Which trophic level forms the bottom level of a pyramid of biomass?
Which energy transfer is least useful for organisms?
to environment by heating
How do you calculate the efficiency of energy transfer between trophic levels?
energy transferred to biomass divided by total energy supplied to organism
Name two resources that plants need from their environment.
any two from: light, water/rainfall, space, nutrients, warmth/temperature, carbon dioxide, oxygen/air
Which term describes something that has been added to the environment, causing harm to the organisms?
Which method can be used to study the distribution of organisms (how they are spread) in a straight line through an ecosystem?
Give two examples of abiotic factors that affect organisms.
any two from: light, water/rainfall, space, nutrients, warmth/temperature, carbon dioxide/oxygen concentration
Is predation an abiotic or biotic factor in ecosystems?
Which term describes the struggle between organisms for a limited resource?
Give one example of a limited resource that animals might struggle with each other for.
any suitable example, such as: mates, nesting space, food, water
Give one example of a limited resource that plants might struggle with each other for.
any suitable example, such as: light, water, nutrients
Which term means the number of different species living in an area?
Which cycle describes the relationship in population size of a secondary consumer and the animal species that it eats?
You might expect the number of predators to drop in an area if their preferred prey species declines in number. Suggest why this drop may not occur.
the predators start to eat a different prey
The malaria protist causes harm when it infects a human. Which term describes this relationship between the malaria protist and human?
How does the malaria protist benefit from being inside a human?
anything suitable, such as: gets nutrients, multiplies in number
Which term describes a close relationship between two species that benefits both species?
Name one material, other than water, that cycles through ecosystems.
any one suitable, e.g. carbon, nitrogen
Which process changes water on the Earth’s surface into water vapour in the air?
Which process describes how plants absorb water from the soil and release it into the air?
Which process causes the formation of clouds of water droplets from water vapour in the air?
What is potable water?
suitable for drinking
Which process produces potable water from salty water?
Name one group of organisms that includes decomposers.
any suitable, e.g. bacteria, fungi, microorganisms
In what form is carbon in the atmosphere?
Name one carbon compound found in living organisms.
any suitable carbon-containing compound, e.g. sugars, fats, proteins, DNA
Which process of living organisms removes carbon from the atmosphere?
Which term describes an organism that breaks down dead plants or animals?
Which term describes the breaking down of dead plant or animal tissue?
Which process in living organisms adds carbon to the atmosphere?
Which process causes carbon to be added to the atmosphere from fossil fuels?
Which biotic process removes carbon from the atmosphere?
Name two groups of organisms that carry out the biotic process that removes carbon from the atmosphere.
any two groups that are producers, e.g. plants, algae
Why do fertilisers added to fields affect plant growth?
Name one problem caused to the environment by spreading too much fertiliser on fields.
any suitable, e.g. eutrophication of water, death of fish in rivers
Which name is given to bacteria that convert nitrogen from the air into nitrogen compounds?
Name one alternative to using powdered fertiliser that a farmer could use to improve crop growth.
any suitable, e.g. spread manure/animal waste, crop rotation