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Reproduction and life cycles
Living things reproduce
The number of living things increases as a result of their reproduction.
Reproduction: Producing new individuals of the same type, which ensures the survival of the species of living things.
The importance of reproduction for living things
- The number of living things increases as a result of reproduction.
- Reproduction ensures the survival of living things.
Methods of reproduction in living things
Living things reproduce in different ways, including:
- Some animals reproduce by giving birth; like cats.
- Some animals reproduce by laying eggs; like chickens.
- Most plants reproduce by seed.
Life cycles of living things
A living thing goes through different stages called the life cycle.
The life cycle: The different stages of growth of living things.
Stages of the life cycle of a living thing
- The life cycle of a living thing begins at the beginning of its life.
- The living thing grows and changes in size and shape.
- The living thing becomes fully grown and capable of reproducing new individuals.
The life cycle of an animal
Each animal has a life cycle that differs from other animals in its shape and size.
The life cycle of a bird
The life cycle of a bird begins with the egg.
The egg hatches into a small bird.
The bird grows and changes in size until it becomes a fully grown bird.
The bird becomes capable of reproduction and producing new individuals.
The life cycle of a butterfly
The butterfly goes through four stages in its life cycle, which are:
The egg.
The butterfly lays eggs on plant leaves.
The caterpillar.
The caterpillar emerges from the egg and feeds on plant leaves.
The chrysalis.
The caterpillar transforms into a butterfly that is preparing to emerge.
The butterfly is fully grown.
The life cycle of a horse
A female horse (mare) gives birth to a small (foal).
The foal grows, matures, and becomes capable of producing new individuals.
The life cycle of a seed plant
Seed plants are plants that reproduce seeds.
Seed plants have a life cycle called the life cycle of a seed plant.
Seed plants go through the following stages:
- The seed is placed in the soil, and the conditions for its growth are available.
- The seed turns into a sprout.
- The sprout grows and becomes a fully grown plant with the ability to produce new individuals.
The life cycle of a lemon
The lemon seed turns into a small sprout.
The sprout continues to grow until it becomes a fully grown plant.
The fully grown plant produces flowers.
The flowers turn into fruits.
