Biology EOC Category 3

Which organism in figure 1 contains the most available energy?

• plants

• hawks and owls

• spiders

• foxes

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram represents a model of a food pyramid. Which statement best describes what happens in this food pyramid?

• More organisms die at higher levels than at lower levels, resulting in less mass at higher levels.

• When organisms die at higher levels, their remains sink to lower levels, increasing the mass of lower levels.

• Energy is lost to the environment at each level, so less mass can be supported at each higher level.

• Organisms decay at each level, and thus less mass can be supported at higher levels

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the energy pyramid below, which organism has the least amount of energy available?

• primary carnivore

• top carnivore

• producers

• herbivores

Tags

NGSS.MS-LS2-3

Which is a true statement about the Nitrogen Cycle?

• The burning of fossil fuels has no effect on the Nitrogen Cycle

• Bacteria are responsible for converting Nitrogen into a form that can be used by plants

• Nitrogen is not a very important element to living organisms

• Nitrogen fixing takes place during photosynthesis

Tags

NGSS.MS-LS2-3

• F

• G

• H

• J

• A

• B

• C

• D

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NGSS.MS-LS2-4

Bacteria is known as__________________ in an ecosystem when feeding on dead organisms.

• Decomposers

• Herbivore

• Pathogens

• Infections

Nitrogen-fixing bacteria are important because...

• they are decomposers

• they are salt lovers

• they provide protection for plants from diseases

• they make nitrogen available to plants in form they can use

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

Fungi and bacteria obtain food by _______________.

• making their on food

• feeding on other living things, dead or alive

• moving from place to place, looking for food.

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants

• Lichens begin to break down rock to form soil

• Lichens are nitrogen fixing bacteria

• Lichens convert carbohydrates into fossil fuels.

Tags

NGSS.MS-LS2-3