1) What is an autotroph? a) an organism that can produce its own food b) organisms that can utilise light energy from sunlight c) Takes nutrition from other sources d) None 2) What is a heterotroph? a) Takes nutrition from other sources b) organisms that can utilise light energy from sunlight c) an organism that can produce its own food 3) What is a detritivore? a) feeds on dead organic material b) feeds on animals c) feeds on plants 4) What does a food chain start with? a) A consumer b) A producer c) An apex predator 5) What is the scientific name for the parts of a food chain? a) Trophic levels b) stages c) steps 6) What process do almost all organisms at the start of food chains do, to provide energy for the other organisms? a) Respiration b) Digestion c) Photosynthesis 7) What is the animal in the last stage in a food chain called? a) Quaternary consumer b) Tertiary consumer c) Herbivore 8) How much energy is lost in a food chain? a) 90% b) 50% c) 10% d) 9) How much energy is passed on? a) 90% b) 10%

Natural selection

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