Ch 5 sec 2 ( food chains,webs, pyramids)

1. Using the food web below, which of these populations is most likely to increase if the number of grasshopper decreases?

• praying mantis

• frog

• plant

• owl

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

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2.Which of the following organisms break down dead material and returns the substances to the environment?

• snake and grasshopper

• bacteria and fungi

• grasshopper and worm

• grass and algae

3.In the food web below, which of the following consumer eats only producers?

• bear

• owl

• frog

• mouse

4. Algae---> Frog---> Snake---> Hawk


The relationship between the algae and the frog in the food chain above may be described as _____________.

• Consumer ------> Decomposer

• Consumer ------> Producer

• Producer -------> Decomposer

• Producer -------> Consumer

Tags

NGSS.MS-LS2-2

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5. The snake that ate the frog in this food chain would be called a ____________________.

• tertiary consumer

• secondary consumer

• primary consumer

• producer

Tags

NGSS.MS-LS2-3

6.The food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. Decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers.

In this food web, identify the decomposer.

• bacteria

• arthropods

• grass plants

• nematodes

Tags

NGSS.MS-LS2-3

7. As you move up the energy pyramid of this ecosystem, each level has __________energy than the one below.

• less

• same

• more

• none of the above

Tags

NGSS.MS-LS2-3

8. What is a food chain?

• A long chain made of food

• A process that starts with ingredients and ends with cooked food.

• A chain showing the flow of energy from producers to the consumers.

• How animals depend on plants and animals for their food and survival

Tags

NGSS.MS-LS1-6

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9. In the food web below, which organism has the greatest number of food sources?

• shrew

• hawk

• snake

• mouse

Why do food chains and food webs start with green plants?

• Because plants can absorb the Sun's energy to produce food

• Because green plants are eaten by all animals.

• Because most green plants are tasty

• Because plants cannot eat animals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3