Plant Structures and Ecosystem Energy

What is the primary function of the roots in a plant?

• To perform photosynthesis

• To absorb water and nutrients

• To produce flowers

• To protect the plant from herbivores

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NC.SCI.LS.6.1

Scarlett is studying how different plants survive in harsh environments. She wonders, which of the following is a structural adaptation that helps cacti survive in the desert?

• Broad leaves

• Deep roots

• Thick, waxy skin

• Brightly colored flowers

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How do nonvascular plants primarily obtain water?

• Through a complex root system

• By absorbing water directly through their surfaces

• By storing water in their leaves

• Through specialized water-conducting tissues

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Which process in plants is responsible for converting sunlight into chemical energy?

• Respiration

• Transpiration

• Photosynthesis

• Germination

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In which biome would you expect to find organisms adapted to cold temperatures and short growing seasons?

• Desert

• Rainforest

• Tundra

• Grassland

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NC.SCI.LS.6.2

Henry and Michael are conducting an experiment in a forest to understand how the availability of sunlight affects the growth of plants. What conclusion can they draw from their observations?

• It has no effect on plant growth

• It determines the types of plants that can grow

• It only affects the growth of nonvascular plants

• It causes plants to grow taller than usual

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NC.SCI.LS.6.2

In a community garden, which of the following best describes the role of decomposers in maintaining the health of the ecosystem?

• They produce energy from sunlight

• They consume primary producers

• They break down dead organisms and recycle nutrients

• They compete with herbivores for food

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NC.SCI.LS.6.2

What is the main difference between vascular and nonvascular plants in terms of nutrient transport?

• Vascular plants use roots, while nonvascular plants use leaves

• Vascular plants have specialized tissues for transport, nonvascular do not

• Nonvascular plants use flowers for transport, vascular plants do not

• Vascular plants transport nutrients through photosynthesis, nonvascular do not

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Priya is studying different biomes and wants to know which of the following factors is abiotic and can affect the survival of organisms in a desert biome?

• Predation

• Competition

• Temperature

• Parasitism

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NC.SCI.LS.6.2

Lily is studying how plants in a rainforest biome adapt to high levels of rainfall. What adaptation might she observe?

• By developing thick bark to store water

• By having leaves with drip tips to shed excess water

• By growing deep roots to reach underground water

• By producing seeds that can float

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NC.SCI.LS.6.2