Food Chains and Food Webs
Biology ⇒ Ecology and Environment
Food Chains and Food Webs starts at 6 and continues till grade 12.
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See sample questions for grade 9
Describe the role of sunlight in a food chain.
Describe what is meant by the term 'apex predator' in a food web.
Describe what would happen to a food web if all the producers were removed.
Explain the difference between a food chain and a food web.
If a food chain has four trophic levels, and the producers have 10,000 kJ of energy, how much energy would you expect at the tertiary consumer level, assuming 10% energy transfer at each level?
If a pesticide kills most of the insects in a grassland, what effect might this have on the food web?
In a forest food web, if the population of rabbits decreases significantly, what is likely to happen to the population of foxes?
In a marine food web, which organism is most likely to be a producer? (1) Shark (2) Seaweed (3) Crab (4) Jellyfish
In a marine food web, which organism is most likely to be a producer? (1) Shark (2) Seaweed (3) Crab (4) Jellyfish
Which of the following best describes a food chain? (1) A group of animals living together (2) A sequence showing how energy is transferred from one organism to another (3) A list of all plants in an ecosystem (4) A process of photosynthesis
Which of the following best explains why food chains rarely have more than five trophic levels? (1) There are not enough species (2) Energy is lost at each level (3) Producers cannot support more levels (4) Decomposers stop the chain
Which of the following best represents the flow of energy in a food chain? (1) Carnivore → Herbivore → Producer (2) Producer → Herbivore → Carnivore (3) Decomposer → Producer → Herbivore (4) Herbivore → Producer → Carnivore
Fill in the blank: Animals that eat only plants are called ________.
Fill in the blank: In a food web, energy flows from the sun to producers and then to ________.
Fill in the blank: Organisms that feed on both plants and animals are called ________.
Fill in the blank: The arrows in a food chain represent the flow of ________.
True or False: All consumers in a food web are animals.
True or False: All food chains must start with a green plant or algae.
True or False: Carnivores can be both secondary and tertiary consumers.
True or False: Decomposers are not part of food webs.
