Animals and their young ones
Animals produce more of their own kind by either
laying eggs or giving birth to young ones. This is
All birds reproduce by laying eggs.
The habit of sitting on their eggs by some parent
animals to keep them warm is called incubation.
Part of an egg
An egg has a thin protective shell called “Egg
Within the egg shell is a white jelly like substance
called the albumen, which is rich in proteins.
The yellow inner part of the egg is the yolk and it is
rich in fats, vitamins and minerals.
The yolk contains food for the growing baby or
The embryo develops into a chick.
Parts Of an Eggwww.reflectivelearn.com
Various stages of development, from an embryo to
a mature adult, is called the cycle of an animal.
Life cycle of frog
A frog lays egg in large clusters called spawns.
A tadpole hatches out of the egg.
A tadpole undergo several changes such as – it
grows legs and loses its tail before it becomes an
adult. This process is called metamorphosis.
A complete change from a young form to adult is called
Life cycle of butterfly
An adult butterfly lay eggs.
The egg hatches into larva
The caterpillar builds a
cocoon around itself to form a
The pupa sheds its skin many
times to become an adult
Process of shedding the old skin
is called moulting