Trace Matter from Environment to Plants - 5th Grade Science
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Which option correctly shows water movement into and through a plant in a model?
Which option correctly shows water movement into and through a plant in a model?
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Soil $\rightarrow$ roots $\rightarrow$ xylem $\rightarrow$ leaves. Water travels upward through specialized transport tissue.
Soil $\rightarrow$ roots $\rightarrow$ xylem $\rightarrow$ leaves. Water travels upward through specialized transport tissue.
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What is the role of sunlight in a matter-tracing model of photosynthesis: matter source or energy source?
What is the role of sunlight in a matter-tracing model of photosynthesis: matter source or energy source?
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Energy source (not a source of matter). Light powers the process but doesn't become part of the sugar.
Energy source (not a source of matter). Light powers the process but doesn't become part of the sugar.
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In a model, which substance is a reactant (input) for photosynthesis inside leaves?
In a model, which substance is a reactant (input) for photosynthesis inside leaves?
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Carbon dioxide ($CO_2$). Gas enters through stomata to provide carbon for sugar synthesis.
Carbon dioxide ($CO_2$). Gas enters through stomata to provide carbon for sugar synthesis.
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In a model, which substance is a reactant (input) for photosynthesis that comes from the soil?
In a model, which substance is a reactant (input) for photosynthesis that comes from the soil?
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Water ($H_2O$). Absorbed by roots and transported to leaves for photosynthesis.
Water ($H_2O$). Absorbed by roots and transported to leaves for photosynthesis.
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In a matter-tracing model, which arrow correctly shows carbon movement into a plant?
In a matter-tracing model, which arrow correctly shows carbon movement into a plant?
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$CO_2$ in air $\rightarrow$ leaf $\rightarrow$ sugar in plant. Carbon enters through stomata and becomes part of sugar molecules.
$CO_2$ in air $\rightarrow$ leaf $\rightarrow$ sugar in plant. Carbon enters through stomata and becomes part of sugar molecules.
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Which option correctly traces sugar movement after it is made in leaves?
Which option correctly traces sugar movement after it is made in leaves?
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Leaves $\rightarrow$ phloem $\rightarrow$ stems, roots, fruits. Sugar flows through living tubes to all growing parts.
Leaves $\rightarrow$ phloem $\rightarrow$ stems, roots, fruits. Sugar flows through living tubes to all growing parts.
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Identify the correct label for the leaf process: $CO_2$ in + light in $\rightarrow$ sugar + $O_2$ out.
Identify the correct label for the leaf process: $CO_2$ in + light in $\rightarrow$ sugar + $O_2$ out.
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Photosynthesis. This equation summarizes the inputs and outputs of the process.
Photosynthesis. This equation summarizes the inputs and outputs of the process.
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Which statement best matches a matter model: plant mass increases mainly because of matter from where?
Which statement best matches a matter model: plant mass increases mainly because of matter from where?
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From $CO_2$ in the air (not mainly from soil). Most plant mass comes from carbon fixed from air, not soil nutrients.
From $CO_2$ in the air (not mainly from soil). Most plant mass comes from carbon fixed from air, not soil nutrients.
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Which product of photosynthesis is a sugar that stores matter and chemical energy for the plant?
Which product of photosynthesis is a sugar that stores matter and chemical energy for the plant?
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Glucose ($C_6H_{12}O_6$). This 6-carbon sugar is the main energy storage molecule.
Glucose ($C_6H_{12}O_6$). This 6-carbon sugar is the main energy storage molecule.
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Which gas is released to the environment as a product of photosynthesis?
Which gas is released to the environment as a product of photosynthesis?
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Oxygen ($O_2$). Released from water molecules split during light reactions.
Oxygen ($O_2$). Released from water molecules split during light reactions.
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Which cell structure contains chlorophyll and is the main site of photosynthesis in plants?
Which cell structure contains chlorophyll and is the main site of photosynthesis in plants?
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Chloroplast. Green organelles capture light energy for sugar synthesis.
Chloroplast. Green organelles capture light energy for sugar synthesis.
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What is the main source of the carbon atoms that end up in a plant’s sugar molecules?
What is the main source of the carbon atoms that end up in a plant’s sugar molecules?
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Carbon dioxide ($CO_2$) from the air. Plants get carbon from air, not soil, to build sugars.
Carbon dioxide ($CO_2$) from the air. Plants get carbon from air, not soil, to build sugars.
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What is the main source of the hydrogen atoms that end up in a plant’s sugar molecules?
What is the main source of the hydrogen atoms that end up in a plant’s sugar molecules?
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Water ($H_2O$) absorbed from the soil. Roots absorb water, which provides hydrogen for sugar synthesis.
Water ($H_2O$) absorbed from the soil. Roots absorb water, which provides hydrogen for sugar synthesis.
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What is the main source of the oxygen atoms that end up in a plant’s sugar molecules?
What is the main source of the oxygen atoms that end up in a plant’s sugar molecules?
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$CO_2$ from air and $H_2O$ from soil. Oxygen in glucose comes from both reactants in photosynthesis.
$CO_2$ from air and $H_2O$ from soil. Oxygen in glucose comes from both reactants in photosynthesis.
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Which plant structure absorbs water and dissolved minerals from the soil into the plant?
Which plant structure absorbs water and dissolved minerals from the soil into the plant?
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Roots (especially root hairs). Root hairs increase surface area for water and mineral absorption.
Roots (especially root hairs). Root hairs increase surface area for water and mineral absorption.
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Which plant tissue transports water upward from roots to leaves?
Which plant tissue transports water upward from roots to leaves?
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Xylem. Hollow tubes carry water up against gravity through the plant.
Xylem. Hollow tubes carry water up against gravity through the plant.
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Which plant tissue transports sugars made in leaves to other parts of the plant?
Which plant tissue transports sugars made in leaves to other parts of the plant?
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Phloem. Living cells transport food from where it's made to where it's needed.
Phloem. Living cells transport food from where it's made to where it's needed.
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Which tiny openings in leaves allow $CO_2$ to enter and $O_2$ and water vapor to exit?
Which tiny openings in leaves allow $CO_2$ to enter and $O_2$ and water vapor to exit?
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Stomata. Guard cells control these pores for gas exchange.
Stomata. Guard cells control these pores for gas exchange.
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What is the name of the process in which plants use light to make sugar from $CO_2$ and $H_2O$?
What is the name of the process in which plants use light to make sugar from $CO_2$ and $H_2O$?
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Photosynthesis. Light energy converts inorganic molecules into organic sugar.
Photosynthesis. Light energy converts inorganic molecules into organic sugar.
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Identify the correct path in a model for sugar leaving a leaf: leaf to stem to which tube type?
Identify the correct path in a model for sugar leaving a leaf: leaf to stem to which tube type?
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Phloem. Sugar moves through phloem to feed all plant parts.
Phloem. Sugar moves through phloem to feed all plant parts.
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