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OpenStem
@openstem · Joined Jul 2026
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Flashcards9 cards
Do all new plants grow from seeds?1 / 9
No. Some plants can grow new plants in other ways, without using a seed at all.
Biology · L1 · Runners and Bulbs
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Biology · L1 · Runners and BulbsFlashcards9 cards
What is a cutting?1 / 9
A cutting is a small piece cut from a plant, such as a piece of stem, that can grow into a brand-new plant.
Biology · L1 · Growing New Plants from Cuttings
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Biology · L1 · Growing New Plants from CuttingsFlashcards10 cards
Which animal roars?1 / 10
A lion roars. Its loud roar can be heard far across the grassland.
Biology · L1 · Match the Sound to the Animal
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Biology · L1 · Match the Sound to the AnimalFlashcards9 cards
Why do animals make sounds?1 / 9
Animals make sounds to talk to other animals, like calling family, warning of danger, or finding a mate.
Biology · L1 · Why Animals Make Sounds
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Biology · L1 · Why Animals Make SoundsFlashcards10 cards
What does it mean for a plant to be an "annual" plant?1 / 10
An annual plant grows, flowers, makes seeds, and dies, all in one growing season.
Biology · L1 · Annual and Perennial Plants
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Biology · L1 · Annual and Perennial PlantsFlashcards10 cards
What is a biennial plant?1 / 10
A biennial plant lives for two years before it dies.
Biology · L1 · Biennial Plants and Comparing Lifespans
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Biology · L1 · Biennial Plants and Comparing LifespansFlashcards10 cards
What plant part is a carrot?1 / 10
A carrot is a root. Roots grow underground and soak up water for the plant.
Biology · L1 · Roots, Stems, and Leaves We Eat
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Biology · L1 · Roots, Stems, and Leaves We EatFlashcards10 cards
What plant part is an apple?1 / 10
An apple is a fruit. A fruit grows from a flower and holds the plant's seeds.
Biology · L1 · Fruits and Seeds We Eat
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Biology · L1 · Fruits and Seeds We EatFlashcards10 cards
What does "warm-blooded" mean?1 / 10
A warm-blooded animal makes its own body heat inside its body, so it stays about the same warm temperature all the time.
Biology · L1 · Warm-Blooded Animals
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Biology · L1 · Warm-Blooded AnimalsFlashcards10 cards
What does "cold-blooded" mean?1 / 10
A cold-blooded animal cannot make its own body heat. Its body temperature changes to match its surroundings.
Biology · L1 · Cold-Blooded Animals
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Biology · L1 · Cold-Blooded AnimalsFlashcards10 cards
What do we call a group of elephants or cows?1 / 10
A group of elephants or cows is called a herd.
Biology · L1 · Special Group Names
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Biology · L1 · Special Group NamesFlashcards9 cards
Why is it safer for animals to live in a group?1 / 9
In a group, there are more eyes and ears watching for danger, so it is harder for a predator to sneak up.
Biology · L1 · Why Animals Live in Groups
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Biology · L1 · Why Animals Live in GroupsFlashcards10 cards
Why do plants need light?1 / 10
Plants use light to make their own food. Without light, a plant cannot make enough food to grow.
Biology · L1 · Plants Grow Toward the Light
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Biology · L1 · Plants Grow Toward the LightFlashcards8 cards
What do plants use light for?1 / 8
Plants use light to make food inside their leaves.
Biology · L1 · Plants and Sunlight
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Biology · L1 · Plants and SunlightFlashcards10 cards
What do we call a big group of ants that live and work together?1 / 10
We call it a colony.
Biology · L1 · Meet the Ant Colony
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Biology · L1 · Meet the Ant ColonyFlashcards10 cards
What job does a forager ant do?1 / 10
A forager ant leaves the nest to look for food.
Biology · L1 · Every Ant Has a Job
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Biology · L1 · Every Ant Has a JobFlashcards5 cards
What is a cell?1 / 5
A cell is the smallest unit of life. Every living thing is made of one or more cells, just like a wall is built from bricks.
Biology · L2 · Cells: Life's Building Blocks
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Biology · L2 · Cells: Life's Building BlocksFlashcards5 cards
What is a producer?1 / 5
A producer is a living thing — usually a plant — that makes its own food using sunlight. Grass, trees, and algae are producers.
Biology · L2 · Food Chains and Food Webs
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Biology · L2 · Food Chains and Food WebsFlashcards9 cards
What is an organelle?1 / 9
An organelle is a small structure inside a cell that does a specific job — the way an organ (like the heart or lungs) does a specific job inside your body.
Biology · L2 · Shared Organelles: Plant and Animal Cells
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Biology · L2 · Shared Organelles: Plant and Animal CellsFlashcards9 cards
What is a cell wall?1 / 9
The cell wall is a rigid layer made mostly of a tough material called cellulose, found just outside the cell membrane in plant cells.
Biology · L2 · What Makes Plant Cells Different
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Biology · L2 · What Makes Plant Cells DifferentFlashcards9 cards
What is the mouth's job in digestion?1 / 9
The mouth chews food into smaller pieces (mechanical digestion) while saliva starts breaking down starches (chemical digestion).
Biology · L2 · Digestive Organs and Their Jobs
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Biology · L2 · Digestive Organs and Their JobsFlashcards9 cards
What is mechanical digestion?1 / 9
Mechanical digestion is breaking food into smaller pieces by physical action, like chewing with teeth or churning in the stomach.
Biology · L2 · Breaking Down and Using Food
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Biology · L2 · Breaking Down and Using FoodFlashcards9 cards
What is the heart?1 / 9
The heart is a muscle about the size of your fist. It squeezes over and over to push blood all around your body.
Biology · L2 · The Heart
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Biology · L2 · The HeartFlashcards9 cards
What is blood made of?1 / 9
Blood is mostly a liquid called plasma, carrying red blood cells, white blood cells, and tiny cell fragments called platelets.
Biology · L2 · Blood and Blood Vessels
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Biology · L2 · Blood and Blood VesselsFlashcards9 cards
What is the respiratory system?1 / 9
The respiratory system is the group of organs that let you breathe. It brings oxygen into your body and removes carbon dioxide, a waste gas.
Biology · L2 · Respiratory Organs
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Biology · L2 · Respiratory OrgansFlashcards9 cards
What happens to your chest when you inhale?1 / 9
When you inhale, the diaphragm and rib muscles contract. This makes your chest bigger, so air rushes in to fill the extra space in your lungs.
Biology · L2 · How Breathing Works
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Biology · L2 · How Breathing WorksFlashcards10 cards
What is a skeleton?1 / 10
A skeleton is the framework of bones inside your body. An adult human skeleton has about 206 bones, all connected together.
Biology · L2 · The Skeleton
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Biology · L2 · The SkeletonFlashcards10 cards
What is a muscle?1 / 10
A muscle is a bundle of tissue that can contract, or shorten, to create movement. You have over 600 muscles in your body.
Biology · L2 · Muscles at Work
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Biology · L2 · Muscles at WorkFlashcards9 cards
What does the brain do?1 / 9
The brain is the body's control centre. It receives messages from the senses, makes decisions, and sends out instructions to the rest of the body.
Biology · L2 · The Brain
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Biology · L2 · The BrainFlashcards10 cards
What is a nerve?1 / 10
A nerve is like a wire made of many thin fibres that carries messages, called nerve signals, between the brain and the rest of the body.
Biology · L2 · Nerves and Reflexes
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Biology · L2 · Nerves and Reflexes