Flashcards in Topic 9- Ecosystems and Material Cycles Deck (56)
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