Ecology:
is the place where a plant or animal lives
is the study of the interactions between organisms and between organisms and their environment
is all the members of the same species living in the habitat
is that part of the planet in which living organisms can be found
An ecosystem:
is a group of clearly distinguished organisms that interact with their environment as a unit
The biosphere:
A habitat:
is all the different populations of species living in the habitat
A population:
A community:
What type of factors are abiotic factors?
Living
Non-living
Disease-causing
Healthy
What type of factors are biotic factors?
Edaphic factors have to do with the:
Water
Weather
Air
Soil
What is a 'producer'?
An organism that gets its food from other living organisms
An organism that makes its own food
An organism that does not need food
An organism that can both make its own food and get food from other living organisms
Consumers are:
organisms that do not require food
organisms that make their own food
organisms that kill other organisms
organisms that obtain their food from other organisms
A grazing food chain is a:
sequence of organisms in which each one is eaten by the next member in the chain
sequence of organisms that live in the same habitat
sequence of organisms in which the last organism eats all the others
sequence of organisms in which the first organism eats the others
❌ →Rabbit → Fox
A pyramid of numbers
represents the number of organisms in each food chain
represents the number of organisms at each stage in a food chain
represents the number of stages in a food chain
represents the number of food chains in an ecosystem
A food web
consists of a population of organisms living in a habitat
consists of a number of different species living in the same habitat
consists of two or more interlinked food chains
consists of two or more separate food chains
A niche is
the functional role an organism plays in a particular habitat
the way an organism feeds in its habitat
an organism's food supply
an organism's offspring
In the carbon cycle elemental carbon in carbon dioxide enters living organisms through the process of:
Digestion
Respiration
Protein synthesis
Photosynthesis
In the carbon cycle, elemental carbon in living organisms enters the atmosphere through the process of:
Burning of fossil fuels is a major contributor to the carbon dioxide in the atmosphere.
In the nitrogen cycle, elemental nitrogen enters living organisms mostly via:
Plants
Fungi
Bacteria
Animals
In the nitrogen cycle, nitrogen fixation is:
the conversion of nitrates to ammonia
the conversion of ammonia to nitrates
the conversion of nitrogen gas to nitrates
the conversion of nitrates to nitrogen gas
In the nitrogen cycle, nitrification is:
Denitrification is:
Assimilation is an important process in both the carbon and nitrogen cycles. Which of the following statements correctly describes assimilation?
Conversion of plant biomolecules into animal biomolecules
Conversion of animal biomolecules into plant biomolecules
Conversion of animal remains into humus
Conversion of plant remains into fossil fuels
The carbon and nitrogen cycles are important parts of 'nutrient recycling'. Which of the following statements correctly describes nutrient recycling?
Nutrients are passed from one organism to the next
Reuse of elements present in living organisms
Nutrients are passed back and forth between two organisms
Reuse of food by a particular organism
Pollution is
the reuse of elements in living organisms
any harmful addition to the environment
the getting rid of waste products of metabolism
the sum of all the chemical reactions in an organism
Conservation is:
the wise management of our existing natural resources
the reabsorption of water in an organism
the management of a living organsism
Which of the following is NOT a problem associated with waste disposal?
Landfill sites are unsightly
Pollution
Disease-causing organisms
Can be used to produce energy
Which of the following is NOT one of the 'three Rs' associated with waste minimisation?
Reduce
Recycle
Restriction
Reuse
Which of the following is NOT an ecological relationship?
Symbiosis
Predation
Competition
Parasitism
Competition is
the struggle for a resource
the catching, killing, and eating of another organism
when one organism lives in or on another organism, called the host, and the host is harmed
when two organisms of different species live in close association and at least one of them benefits
Predation is:
the catching, killing and eating of another organism
where one organism lives in or on another organism, called the host, and the host is harmed
where two organisms of different species live in close association and at least one of them benefits
Symbiosis is:
Parasitism is:
where one organisms lives in or on another organism, called the host, and the host is harmed
