Page 247 - New Medley 4 Semester 1

these eggs do not break when laid on the

ground. The eggs are not incubated by the
parent reptiles. They get the warmth for their

development from the sun. Adult frog Eggs

Amphibians
Amphibians can live both on land and in Young frog Tadpole

water. A frog is an amphibian. It lays eggs
in safe places in water. The eggs of frog are

covered with jelly. Frogs also produce spawn Tadpole with Tadpole with
of eggs, similar to fishes. The eggs hatch into hind and fore hind limbs
limbs
tadpoles, which look like little fishes. After a Life cycle of a frog showing different
few days, tadpoles develop legs and arms and stages of development

grow into young frogs having tails. Now, they
look similar to their parents. In the next few

days, the tail disappears and an adult frog is Egg
formed.

Insects

All insects lay eggs. Insects like grasshoppers
and cockroaches have three stages in their

Adult
life cycle. Some insects like houseflies and cocroach Nymph
butterflies have four stages in their life cycle. Life cycle of a cockroach showing
The three stages in the life cycle of a cockroach three stages of development

are egg, nymph and adult. The nymph

is the baby cockroach that comes out of
the egg. It looks like an adult. It does not
have wings. As it grows, the old skin is Adult butterfly Adult
emerging
shed off and a new one grows. This is from pupa butterfly Eggs

called moulting. A nymph becomes an
adult cockroach after many moultings.

The four stages in the life cycle of a Pupa Caterpillar larva
butterfly are egg, larva, pupa and adult. Life cycle of a butterfly showing

The young one which hatches from the four stages of development
the egg is not the same as the adult. It looks like a worm and is called larva.

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