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🐸 Life Cycles of Living Things

How living things are born, grow up, make young of their own, and start the whole cycle again — from frogs and butterflies to plants and people.

3
lessons
~15 min
to learn
🔬 Science
subject
Ages 6–12
level
Start the course →

What you’ll learn

  1. What Is a Life Cycle?Understand that a life cycle is the sequence of being born, growing, becoming an adult, and making new young.A life cycle is the journey every living thing takes: it is born, grows, becomes a grown-up, and makes new young that begin the cycle again. Different plants and animals share these same big steps even though they look very different.
  2. Animal Life CyclesDescribe how animals grow, including egg-layers, live-born mammals, and metamorphosis in frogs and butterflies.Animals grow through their own life cycles. Frogs go from eggs to tadpoles to frogs, and butterflies go from egg to caterpillar to chrysalis to butterfly — a big change called metamorphosis. Many animals hatch from eggs, while mammals are born live and cared for by their mother.
  3. Plant Life CyclesExplain the plant life cycle from seed to seedling to flowering plant that makes new seeds.Plants have life cycles too. Most start as a seed that sprouts into a seedling, grows into a plant with leaves and a stem, and then flowers. The flowers make new seeds that grow into new plants. Animal and plant cycles both loop, but they begin and grow in different ways.

Questions this course answers

What is a life cycle?

A life cycle is the journey every living thing takes: being born, growing up, and making young that start the cycle again.

What does a frog's egg hatch into first?

A frog's egg hatches into a tadpole, which swims with a tail and gills before growing into a frog.

In a butterfly's life cycle, what does a caterpillar make before becoming a butterfly?

A caterpillar forms a case called a chrysalis, and inside it changes into a butterfly.

How do mammals like dogs and humans begin their life?

Mammals are born live from their mother, who then feeds and cares for her young.

Most plants begin their life cycle as a what?

Most plants start as a seed, which sprouts into a seedling with water, warmth, and light.

What does a fully grown plant make to start its cycle again?

A grown plant makes flowers, which produce new seeds — and those seeds grow into new plants.

Grounded in trusted sources

  • BBC Bitesize
  • Britannica Kids
  • National Geographic Kids
  • Royal Botanic Gardens Kew

Every Wunder lesson is built from real, reputable sources — never invented.

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