Trace Matter from Plants to Animals - 5th Grade Science

What substance do plant roots absorb from soil that is used in photosynthesis?

Water ( $H_2O$ ). Roots absorb this liquid needed for photosynthesis reactions.
Identify the correct model statement: matter is created when animals grow, or matter is rearranged into new forms?

Matter is rearranged into new forms. Matter cannot be created or destroyed, only transformed.
Which gas from the air is the main source of carbon atoms in a plant's sugars?

Carbon dioxide. CO $_2$ provides the carbon backbone for organic molecules in plants.
What is the term for an organism that makes its own food using sunlight?

Producer. Producers convert light energy into chemical energy through photosynthesis.
Which term describes an organism that makes its own food using sunlight?

Producer. These organisms convert light energy into food through photosynthesis.
Which term describes an organism that must eat other organisms for matter and energy?

Consumer. These organisms obtain matter and energy by eating other organisms.
What process moves matter from plant sugars into an animal's body tissues after eating?

Digestion and absorption. Breaks down plant matter into molecules animals can use.
Choose the correct trace of carbon atoms: air CO $_2$ → plant sugar → deer body.

Air CO $_2$ → plant sugar → deer body. Carbon atoms move from atmospheric CO $_2$ through plants to herbivores.
What is the main source of matter that builds most of a plant's body (biomass)?

Carbon dioxide from the air. Plants convert CO₂ into sugars that form their tissues.
In a food chain model, what do arrows show about movement between organisms?

Direction of matter and energy transfer. Arrows point from eaten organism to eater, showing flow of nutrients.
Identify the correct model order for matter transfer: grass, rabbit, fox.

Grass → rabbit → fox. Shows producer to primary consumer to secondary consumer flow.
What process in animals breaks down food to release energy and rearrange matter into body parts?

Digestion. Breaks food into nutrients that build new body tissues.
Identify the correct direction of matter flow in a food chain arrow: from eaten to eater, or eater to eaten?

From eaten organism to eater. Arrows point toward the organism receiving the matter.
What process do plants and animals use to release energy from food (sugars) using oxygen?

Cellular respiration. Breaks down sugars with oxygen to release stored energy.
Which model best traces matter from plants to animals: energy pyramid or food chain with arrows?

Food chain with arrows. Arrows explicitly show matter movement between organisms.
What is the main source of energy that powers photosynthesis in plants?

Sunlight (light energy). Light energy drives the chemical reactions of photosynthesis.
What is the main role of decomposers in recycling matter in an ecosystem model?

Return nutrients to the soil and environment. Decomposition releases minerals and nutrients for producer uptake.
Identify the decomposer in this set: mushroom, hawk, grass.

Mushroom. Mushrooms are fungi that break down dead organic material.
What is the main source of energy plants use to make food during photosynthesis?

Sunlight (light energy from the Sun). Light energy powers the chemical reactions of photosynthesis.
What do arrows in a food chain model represent: direction of matter transfer or size of organisms?

Direction of matter transfer. Arrows point from eaten to eater, showing matter flow.
What term describes the building of new body parts using matter from food?

Growth. Organisms increase mass by incorporating matter from consumed food.
What are the products in photosynthesis (materials plants make and release)?

Glucose ( $C_6H_{12}O_6$ ) and oxygen ( $O_2$ ). Sugar stores energy; oxygen is released as a byproduct.
Which substance absorbed by roots supplies hydrogen atoms used to build plant sugars?

Water. H $_2$ O molecules split during photosynthesis, providing hydrogen for glucose.
Identify the consumer in this chain: algae → snail → fish.

Snail and fish. Both organisms eat other organisms for matter and energy.
Which part of a plant is most directly eaten by many herbivores in food chain models?

Leaves. Leaves contain high nutrient content and are easily accessible to herbivores.
Which part of a food chain shows where matter first enters the chain: producer or consumer?

Producer. All food chains start with organisms that make their own food.
What process releases $CO_2$ back to the air from both plants and animals?

Cellular respiration. Breaks down sugars for energy, releasing $CO_2$ as waste.
What is the name of the sugar plants make that becomes plant matter and food for animals?

Glucose ( $C_6H_{12}O_6$ ). This 6-carbon sugar is the basic building block of plant matter.
Which option correctly traces matter: plant leaf matter → rabbit body matter or rabbit → plant?

Plant leaf matter → rabbit body matter. Matter flows from food source to consumer when eaten.
Which option best completes the matter cycle: plant makes sugar, animal eats plant, then animal releases ____?

Carbon dioxide ( $CO_2$ ). Completes the cycle by returning carbon to the atmosphere.
Which organism is the primary consumer in this model: corn → mouse → owl?

Mouse. Mouse directly consumes the producer (corn) in this food chain.
Which plant structure absorbs water ( $H_2O$ ) from the soil?

Roots. Root hairs increase surface area for water absorption.
What process do plants use to make sugar from carbon dioxide and water?

Photosynthesis. This process converts light energy into chemical energy in sugars.
What is a consumer in a matter-tracing model?

An organism that gets matter by eating others. Consumers must eat to obtain organic matter for growth.
What do food webs model that a single food chain does not?

Many connected feeding relationships. Shows how organisms have multiple food sources and predators.
Which arrow direction correctly traces matter from plants to animals: plant → deer or deer → plant?

Plant → deer. Arrows show matter flowing from source (plant) to consumer (deer).
What is a producer in a matter-tracing model?

An organism that makes its own food (a plant). Producers convert inorganic matter into organic matter.
In a food chain, which direction does matter move: plant to animal or animal to plant?

Plant to animal. Matter flows from producers to consumers in food chains.
Which option is a correct matter path: $CO_2$ → plant sugar → deer muscle or deer muscle → plant sugar → $CO_2$ ?

$CO_2$ → plant sugar → deer muscle. Matter flows from air to plants to herbivores.
What do food chains model about matter in an ecosystem?

How matter moves from organism to organism. Arrows show matter transfer through eating relationships.
What is the correct order for tracing matter in a simple chain: grass, rabbit, fox?

Grass → rabbit → fox. Shows matter flow from producer to primary to secondary consumer.
What is the main sugar made by plants that becomes food matter for animals?

Glucose (sugar). C $_6$ H $_{12}$ O $_6$ is the primary energy storage molecule made by plants.
What is the best definition of matter in a food chain model?

Anything that has mass and takes up space. Matter is the physical substance that makes up all living and non-living things.
What process moves matter from air and water into plant sugars?

Photosynthesis. This process converts inorganic matter into organic sugars.
Which statement best describes what happens to plant matter when an animal eats the plant?

Matter moves into the animal and becomes part of its body or waste. Consumed plant molecules are digested and incorporated into animal tissues.
Identify the producer in this chain: algae → snail → fish.

Algae. This organism makes its own food through photosynthesis.
What gas is released as a product of photosynthesis?

Oxygen ( $O_2$ ). This waste product is released through stomata during photosynthesis.
What is the main source of matter that builds a plant's body (stems, leaves, roots)?

Carbon dioxide ( $CO_2$ ) from the air. Plants convert $CO_2$ into sugars that become their structure.
What gas do plants take in during photosynthesis to build sugars?

Carbon dioxide ( $CO_2$ ). Plants absorb this gas through tiny pores called stomata.
What are the reactants in photosynthesis (materials plants take in)?

$CO_2$ and $H_2O$ . Plants combine these simple molecules to build complex sugars.
Which option best identifies where most of an animal's body mass ultimately comes from?

Matter in the food it eats (plants or other animals). Animals build their bodies from molecules obtained through their diet.
What is the name for the mass of living material in an organism, such as a plant or animal?

Biomass. The total mass of all living tissues in an organism.
When an animal eats a plant, what is transferred to the animal: matter, energy, or both?

Both matter and energy. Food provides building blocks (matter) and fuel (energy).
What process do plants use to make sugars from carbon dioxide and water?

Photosynthesis. Plants combine CO $_2$ and H $_2$ O using sunlight to create glucose.
Which organism is the producer in this model: algae → fish → heron?

Algae. Algae photosynthesize, making them the base of this aquatic food chain.
Which plant structure takes in carbon dioxide ( $CO_2$ ) from the air?

Leaves (through stomata). Stomata are tiny pores that allow gas exchange.
What is the term for organisms that break down dead organisms and wastes into simpler matter?

Decomposers. These organisms recycle nutrients by breaking down organic matter.
Which statement is correct for tracing matter: plant matter becomes animal body matter, or energy becomes matter?

Plant matter can become animal body matter. Matter is conserved and rearranged, not created from energy.
What is the term for an organism that must eat other organisms to get matter and energy?

Consumer. Consumers cannot produce their own food and depend on other organisms.

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