4th: Organisms and Environments

Since it undergoes photosynthesis, grass is considered to be a _____________.

• Consumer

• Decomposer

• Producer

• Apex Predator

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The structure of the birds beak allows the bird to survive in its environment by 

eating __________ seeds and insects.

• Large

• Small

• Sunflower

• Poppy

The following is the life cycle of which organism?

• a bird

• a snake

• a frog

• a beetle

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A student observes the shape of a plant's leaves and its offspring. The student notices that the shape on both of the plants are similar. 

Did the offspring most likely inherit its color from the parent or learn its color from the parent?

(a)  

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Use the information in the box to answer the following question.

If there is a shortage of gazelles on the African plains, which of these is LEAST LIKELY to happen?

• Lions would hunt for other animals.

• Lions would eat the grass made available by fewer gazelles.

• The number of lions would decrease.

• The number of zebras would decrease.

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The function of plant structures such as stinging hairs, thorns, and briars is for 

___________________.

• protection

• disease prevention

• photosynthesis

• pollination

When a dog is frightened, it shows its teeth, growls, and barks.

Which of the following BEST explains why the dog reacts this way?

• The dog was taught to react this way by its owner.

• The dog reacts this way naturally because it inherited the behavior

• The dog learned to react this way from its parents and siblings.

• The dog tried different ways to react and decided this was the best way.

One season, there was a shortage of producers in a food web.  As a result, the number of rabbits and hawks decreased. Why did both the rabbit and hawk populations decline?

• More consumers than producers are needed to support the food web.

• Producers are not as important as consumers in a food web.

• Organisms in this food web are interdependent.

• Populations tend to stay constant in a food web.

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Which of the following animals is BEST suited for living in trees?

• Animal D

• Animal C

• Animal A

• Animal B

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Students are studying the changes that happen when caterpillars change into butterflies. They would like to record information about what the caterpillars look like as they change. 

The best way to record this information is to

• Observe the caterpillars once a week and determine their eating habits.

• Observe the caterpillars once a week and note their interactions with each other.

• Observe the caterpillars once a week and measure how fast they climb.

• Observe the caterpillars once a week and sketch the caterpillars