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 7
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.
Explain why energy transfer in a food chain is not 100% efficient.
Explain why food webs are more stable than food chains.
If a disease kills all the rabbits in a forest, what is likely to happen to the population of foxes that eat them?
If a food chain is: Algae → Small fish → Large fish → Bird, what would happen if the small fish population decreased sharply?
In a grassland food chain: Grass → Grasshopper → Frog → Snake → Hawk, what is the tertiary consumer?
Which of the following is a secondary consumer in a pond ecosystem?
(1) Algae
(2) Small fish
(3) Water beetle
(4) Frog
Which of the following best describes a food web?
(1) A single line of energy flow
(2) A network of interconnected food chains
(3) A list of all animals in an ecosystem
(4) A diagram showing only producers
Which of the following best describes an omnivore?
(1) Eats only plants
(2) Eats only animals
(3) Eats both plants and animals
(4) Eats only dead organisms
Which of the following best explains why food chains rarely have more than four or five trophic levels?
(1) There are not enough producers
(2) Energy is lost at each level
(3) Decomposers eat all the energy
(4) Carnivores cannot eat herbivores
Which of the following is a producer?
(1) Oak tree
(2) Rabbit
(3) Wolf
(4) Mushroom
Fill in the blank: Animals that eat both plants and animals are called __________.
Fill in the blank: Animals that eat only plants are called __________.
Fill in the blank: In a food chain, the organism that eats the primary consumer is called the __________ consumer.
Fill in the blank: The arrows in a food chain show the direction of __________ flow.
True or False: All animals in a food web are either herbivores or carnivores.
True or False: All food chains must start with a green plant or algae.
True or False: Carnivores can be found at any trophic level in a food chain.
True or False: Decomposers are not part of food webs.
