Match Structures to Functions - 4th Grade Science
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Which external structure helps many animals move from place to place?
Which external structure helps many animals move from place to place?
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Legs (or other limbs) used for movement. Limbs provide locomotion through walking, running, swimming, or flying.
Legs (or other limbs) used for movement. Limbs provide locomotion through walking, running, swimming, or flying.
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What is the main function of gills in a fish?
What is the main function of gills in a fish?
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Take in oxygen from water and release carbon dioxide. Fish extract dissolved oxygen as water flows over gill filaments.
Take in oxygen from water and release carbon dioxide. Fish extract dissolved oxygen as water flows over gill filaments.
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What is the function of stomata on leaves?
What is the function of stomata on leaves?
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Allow gas exchange and release water vapor. These tiny pores open and close to control gas and water movement.
Allow gas exchange and release water vapor. These tiny pores open and close to control gas and water movement.
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What is the function of chlorophyll in plant leaves?
What is the function of chlorophyll in plant leaves?
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Capture sunlight energy for photosynthesis. This green pigment absorbs light energy needed for making food.
Capture sunlight energy for photosynthesis. This green pigment absorbs light energy needed for making food.
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What is the function of seeds in a plant life cycle?
What is the function of seeds in a plant life cycle?
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Grow into a new plant when conditions are right. Seeds contain embryos that germinate when moisture and temperature are suitable.
Grow into a new plant when conditions are right. Seeds contain embryos that germinate when moisture and temperature are suitable.
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What is the function of fruit on a plant?
What is the function of fruit on a plant?
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Protect seeds and help spread them. Fruits develop from flowers to aid in seed dispersal.
Protect seeds and help spread them. Fruits develop from flowers to aid in seed dispersal.
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What is the function of a flower in most plants?
What is the function of a flower in most plants?
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Reproduction by making seeds. Flowers contain reproductive organs that produce seeds.
Reproduction by making seeds. Flowers contain reproductive organs that produce seeds.
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What is the main function of lungs in a land animal?
What is the main function of lungs in a land animal?
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Take in oxygen from air and release carbon dioxide. Air sacs in lungs exchange gases between air and blood.
Take in oxygen from air and release carbon dioxide. Air sacs in lungs exchange gases between air and blood.
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What is the main function of a bird's beak?
What is the main function of a bird's beak?
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Gather and eat food (shape helps with the diet). Beak shape matches food type: curved for meat, flat for seeds.
Gather and eat food (shape helps with the diet). Beak shape matches food type: curved for meat, flat for seeds.
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What is the function of sharp teeth (canines) in many animals?
What is the function of sharp teeth (canines) in many animals?
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Tear meat and help catch prey. Pointed teeth pierce and hold struggling prey.
Tear meat and help catch prey. Pointed teeth pierce and hold struggling prey.
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What is the function of flat teeth (molars) in many animals?
What is the function of flat teeth (molars) in many animals?
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Grind and crush food, often plants. Broad surfaces crush tough plant material.
Grind and crush food, often plants. Broad surfaces crush tough plant material.
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What is the main function of the stomach in an animal?
What is the main function of the stomach in an animal?
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Break down food during digestion. Acids and enzymes chemically break down food into nutrients.
Break down food during digestion. Acids and enzymes chemically break down food into nutrients.
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What is the main function of the heart in an animal?
What is the main function of the heart in an animal?
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Pump blood to move oxygen and nutrients through the body. This muscular organ contracts rhythmically to circulate blood.
Pump blood to move oxygen and nutrients through the body. This muscular organ contracts rhythmically to circulate blood.
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What is the function of the skeleton (bones) in most animals?
What is the function of the skeleton (bones) in most animals?
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Support the body, protect organs, and allow movement. Bones form a framework that muscles pull against.
Support the body, protect organs, and allow movement. Bones form a framework that muscles pull against.
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Identify the best match: Feathers are an external structure mainly used for what function?
Identify the best match: Feathers are an external structure mainly used for what function?
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Flight and insulation (keeping warm). Feathers enable birds to fly and trap air for warmth.
Flight and insulation (keeping warm). Feathers enable birds to fly and trap air for warmth.
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What is the main function of a leaf?
What is the main function of a leaf?
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Make food for the plant using photosynthesis. Leaves contain chlorophyll to convert sunlight into glucose.
Make food for the plant using photosynthesis. Leaves contain chlorophyll to convert sunlight into glucose.
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What is the main function of a plant's stem?
What is the main function of a plant's stem?
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Support the plant and transport water and nutrients. The stem acts as the plant's highway system and structural support.
Support the plant and transport water and nutrients. The stem acts as the plant's highway system and structural support.
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What is the main function of a plant's roots?
What is the main function of a plant's roots?
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Absorb water and minerals and anchor the plant. Roots extend underground to access soil resources and stabilize the plant.
Absorb water and minerals and anchor the plant. Roots extend underground to access soil resources and stabilize the plant.
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What is the main function of the lungs in many animals?
What is the main function of the lungs in many animals?
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Take in oxygen and remove carbon dioxide. Gas exchange occurs in tiny air sacs.
Take in oxygen and remove carbon dioxide. Gas exchange occurs in tiny air sacs.
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What is the function of muscles in an animal's body?
What is the function of muscles in an animal's body?
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Pull on bones to create movement. Muscles contract and relax to move body parts.
Pull on bones to create movement. Muscles contract and relax to move body parts.
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