What is the best definition for biomass?The average dry mass of a consumer at the top of a food chainThe average dry mass of a producer in a food chainThe dry mass of food consumed within a food chainThe dry mass of an organism, which equates to the amount of energy it contains2What do the arrows in a food chain show?The direction the energy travels inWhether organisms are primary or secondary consumersThe size of the organisms at each levelThe numbers of organisms at each level3Which of the following describes secondary consumers?They eat plantsThey eat meatThey are plants or algaeThey eat tertiary consumers4Which of the following statements about a pyramid of biomass is not true? The producer is always at the bottomThe amount of biomass at each level is more than it was at the previous levelIt is always shaped like a triangleIt shows the relative amount of biomass at each level of a food chain5A flock of sheep with a biomass of 300 kg feeds on grass with a biomass of 1000 kg. What is the efficiency of energy transfer in this food chain? 100%30%3%0.3%6The amounts of biomass in living things decrease as you progress up a food chain. Which of the following biomass will be transferred to the next trophic level?Biomass used for growth and repairBiomass used for respirationBiomass used for movementBiomass lost as waste
Question
What is the best definition for biomass?The average dry mass of a consumer at the top of a food chainThe average dry mass of a producer in a food chainThe dry mass of food consumed within a food chainThe dry mass of an organism, which equates to the amount of energy it contains2What do the arrows in a food chain show?The direction the energy travels inWhether organisms are primary or secondary consumersThe size of the organisms at each levelThe numbers of organisms at each level3Which of the following describes secondary consumers?They eat plantsThey eat meatThey are plants or algaeThey eat tertiary consumers4Which of the following statements about a pyramid of biomass is not true? The producer is always at the bottomThe amount of biomass at each level is more than it was at the previous levelIt is always shaped like a triangleIt shows the relative amount of biomass at each level of a food chain5A flock of sheep with a biomass of 300 kg feeds on grass with a biomass of 1000 kg. What is the efficiency of energy transfer in this food chain? 100%30%3%0.3%6The amounts of biomass in living things decrease as you progress up a food chain. Which of the following biomass will be transferred to the next trophic level?Biomass used for growth and repairBiomass used for respirationBiomass used for movementBiomass lost as waste
Solution
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The best definition for biomass is "The dry mass of an organism, which equates to the amount of energy it contains".
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The arrows in a food chain show "The direction the energy travels in".
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Secondary consumers are described as "They eat meat".
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The statement about a pyramid of biomass that is not true is "The amount of biomass at each level is more than it was at the previous level".
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The efficiency of energy transfer in this food chain is "30%".
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The biomass that will be transferred to the next trophic level is "Biomass used for growth and repair".
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