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Which one of the following choices is not an abiotic element?
Protein
Water
Nitrogen
Carbon
Which statement about the cycling of matter is false?
All recyclable matter comes from dead organisms.
The final products of decomposition are abiotic elements.
Abiotic elements are used by producers for growth.
Decomposers break down organic waste.
DDT, a pesticide, was used for many years around the world. However, the use of DDT was later banned because it caused widespread harm to animals as it moved up the food chain.
Which of the following statements regarding DDT is false?
DDT replaced the role of primary consumer in food chains
DDT did not break down, but rather stayed in organic matter
DDT was concentrated in animal tissue as it moved up the food chain
DDT was stored in the bodies of animals that ate organisms sprayed with DDT
Decomposers break down organic matter into many things. Which of the following is not produced by decomposers?
Bacteria
Abiotic elements
Carbon, oxygen, hydrogen, nitrogen and phosphorous
Nutrients
Which choice below is the correct definition of organic matter?
Organic matter is made up of, or comes from, organisms
Organic matter is made up of biotic elements in the process of decay
Organic matter is made up of carbon and is broken down by consumers
Organic matter is made up of the abiotic components of an ecosystem
Which one of the following elements does not have a component of its cycle in air?
Phosphorus
Nitrogen
Carbon
Hydrogen
How do consumers absorb organic matter?
Through feeding
Through the skin
Through direct contact with water
Through breathing
Which product do you think would be most easily broken down by decomposers in a landfill?
A box made of plant cellulose
A plastic water bottle
A rusty iron nail
Styrofoam packing chips
Which of the following sequences best describes the cycling of matter in a meadow ecosystem?
