Reproduction

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SESE Living Things
Reproduction
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The life cycle
All animals, including humans, start out as
babies and get older.

• When babies are born they are very small.
• Some animals need their parents to protect them
  and to help them learn about the world.

Seal pup
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The life cycle
As animals get older they can start to do more
things by themselves. They will become bigger and
stronger and more able to look after themselves.
Seal pup with its mother
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The life cycle
Once an animal is fully grown it will find a
mate. Together they will have their own babies
and the cycle will start again. They will
continue to grow old and the cycle will end when
they die.
Baby turtle
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The adult penguin lays an egg and looks after
it until it hatches.
The egg hatches. The penguin chick has fluffy
feathers and is looked after by its parents.
The chick is a fully grown adult. It can catch
all of its own food.
The chick grows bigger. Its feathers
become thick and oily.
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Reproduction
Different types of animals reproduce in different
ways. All animals need a male and a female to
reproduce. Clownfish can change from male to
female, if a female in their group dies.
Clownfish
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Reproduction
Humans, which are mammals, give birth to live
babies. Babies grow inside the mother before
they are born. Seals, whales and otters are all
also mammals. Baby seals are often rescued by
SEA LIFE after they lose their mothers.
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Reproduction
Fish, birds and reptiles all lay eggs. The baby
grows in the egg and hatches when it becomes big
enough. Crocodiles, turtles and snakes are all
reptiles.
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True or false quiz
True or false
1. Male seahorses give birth to their young.
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True or false quiz
True
The male seahorse carries the eggs until they are
ready to hatch and then releases them.
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True and false quiz
True or false
2. Sharks are a type of fish so they lay eggs.
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True and false quiz
False
Some sharks give birth to live young.
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True and false quiz
True or false
3. Some species of octopus can lay up to 200,000
eggs in one go!
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True and false quiz
True
Some species of octopus can lay up to 200,000
eggs in one go! Once they have laid the eggs they
guard them for about a month until they hatch.
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True and false quiz
True or false
4. The Clownfish can change from a female to a
male to produce young.
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True and false quiz
True
If the male in a group of Clownfish dies, one of
the females will change into a male.
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True and false quiz
True or false
5. A new born Blue Whale calf weighs more than a
car.
Photo credit René te Witt
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True and false quiz
True
A newborn Blue Whale calf will weigh about
2700kg. This is as much as a car! The calf will
be 7 metres when first born, this is nearly as
long as a double decker bus!
Photo credit René te Witt