Biomes and Biotic/Abiotic Factors

Which resource would be most important for a polar bear exhibit in a

North Carolina zoo?

• a man-made igloo

• a cold-water pool

• local produce

• tropical fish

Meadows often have plants that are low to the ground and need high

levels of sunlight to grow. If tall trees begin growing in a meadow, what

will most likely happen to the low-growing plants over time?

• They will die.

• They will grow longer roots.

• They will continue growing normally.

• They will begin growing closer to the ground.

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Why are most of the plants in the tundra simple ones such as mosses?

• The water is very salty in the tundra.

• There is poor soil quality in the tundra.

• There is too much sunlight in the tundra.

• The temperature is too high in the tundra.

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The desert receives very little rainfall. How have desert plants adapted

for survival?

• by having shallow root systems

• by growing thorns along the stems

• by producing numerous long leaves

• by developing deep, extensive root systems

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Which environmental factor would most likely prevent an oak tree from

surviving in the desert?

• lack of sunlight

• lack of moisture

• high wind speeds

• low temperatures

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What effect would a drought have on plants and animals in a tropical rain

forest?

• There would be an increase in plants and an increase in animals that

  consume plants.

• There would be a decrease in plants and an increase in animals that

  consume plants.

• There would be an increase in plants and a decrease in animals that

  consume plants.

• There would be a decrease in plants and a decrease in animals that

  consume plants.

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Which factors are most likely to restrict tree growth at the top of a tall

mountain?

• warm temperatures, high levels of sunlight, and poor soil quality

• high elevation, foggy conditions, and thick, dark soil

• cold temperatures, high winds, and thin soil

• thin air, low winds, and thick, sandy soil

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NGSS.MS-LS1-5

Why is sunlight necessary for survival in an ecosystem?

• Sunlight allows plants to locate food resources.

• Sunlight speeds up the process of transpiration in plants.

• Sunlight increases the amount of available water in an ecosystem.

• Sunlight is the source of energy for the organisms in an ecosystem.

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Which factor most affects the rate of photosynthesis?

• air temperature

• oxygen level

• soil quality

• sunlight

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Which type of leaves are most likely to help a plant survive in a rainy

climate?

• wide and flat

• thick and waxy

• thin and rough

• narrow and sharp