MHS Biology Ecology Test Review

Autotrophs are organisms that can

• make their own food
• eat other organisms
• walk on 2 feet
• eat like pigs

Humans are omnivores.  This means that

• humans can only eat plant based foods
• humans are at the top of the food chain
• humans are only capable of digesting other animal products
• humans eat both meat and plants

Which level of an ecological pyramid has the largest number of individuals and biomass?

• primary consumers
• the level that contains producers
• secondary consumers
• top predators

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As you move up the trophic levels of the ecological pyramid, what happens to energy?

• It decreases
• In increases

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If the producers contain 10,000 kcal of energy, how much is available to the secondary consumers?

• 1000 kcal
• 100 kcal
• 10 kcal
• 1 kcal

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What do the arrows show in the image?

• who is boss
• the direction of the sun
• transfer of energy
• who's eating who

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What would be a limiting factor for carnivores?

• dark daylight hours
• drought-like conditions
• small amounts of grasses and shrubs
• small number of prey

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Which level of the pyramid would have the highest concentration of toxins according to the idea of biomagnification?

• grass
• rabbit
• snake

• owl

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NGSS.MS-LS2-3

In a food web that contains bacteria, what is the usual function of this organism?

• nutrient production
• food source for primary consumers
• decomposition of organic material
• to make the organisms sick

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The interaction of biotic and abiotic factors is a(n)

• ecosystem
• organism
• community
• population

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