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 10
Describe the role of decomposers in a food web.
Describe what is meant by the term 'trophic level'.
Describe what would happen to a food web if all the decomposers were removed.
Explain the difference between a food chain and a food web.
If a disease kills all the grass in a grassland ecosystem, what is the most likely effect on the population of grasshoppers?
If only 10% of energy is transferred from one trophic level to the next, how much energy would be available to secondary consumers if producers have 10,000 units of energy?
In a forest food web, what would likely happen if all the insect-eating birds disappeared?
Which organism is at the top of the following food chain: Grass → Grasshopper → Frog → Snake → Hawk?
In a marine food web, which organism is most likely to be a primary producer? (1) Shark (2) Phytoplankton (3) Jellyfish (4) Crab
Which of the following best describes a food chain? (1) A sequence of organisms each dependent on the next as a source of food (2) A group of organisms living together (3) A network of interconnected food webs (4) A process of photosynthesis
Which of the following best describes the role of producers in a food web? (1) They consume other organisms (2) They decompose dead matter (3) They convert solar energy into chemical energy (4) They are always at the top of the food web
Which of the following best represents the correct order of energy flow in a food chain? (1) Producer → Primary consumer → Secondary consumer → Tertiary consumer (2) Primary consumer → Producer → Secondary consumer → Tertiary consumer (3) Producer → Secondary consumer → Primary consumer → Tertiary consumer (4) Tertiary consumer → Secondary consumer → Primary consumer → Producer
Fill in the blank: In a food web, organisms that eat both plants and animals are called __________.
Fill in the blank: Organisms that make their own food using sunlight are called __________.
Fill in the blank: The arrows in a food chain represent the flow of __________.
Fill in the blank: The first trophic level in any food chain is always occupied by __________.
True or False: All herbivores are primary consumers.
True or False: Decomposers are not part of food webs.
True or False: Energy is lost as heat at each trophic level in a food chain.
True or False: In a food web, energy flows in multiple directions between organisms.
