The diagram shows the natural process life cycle of a frog from the embryo stage, through seven developmental phases from tadpole to fully grown amphibian.
Initially, the fertilised eggs grow into embryos from which very small tadpoles emerge and shelter under plants in the water or pond. The tadpole begins life black in colour and it has a long tail and shorter body. As it grows, external gills for breathing are produced while subsequent stages in its development include a longer tail and when this stage is complete back limbs begin to appear which allows the tiny creature to swim faster.
The baby frog is nourished from food and nutrients stored in its tail, and the next stage in the cycle is for front limbs to begin growing while the tail shrinks and eventually disappears. At each stage the creature continues to enlarge significantly and changes in colour from black, to dark green and ultimately to bright green.
Once the tail has disappeared the frog is supported on four limbs and continues, in the final phrase, to develop into a full sized amphibian.
The diagram
shows
the natural process life cycle of a frog from the embryo
stage
, through seven developmental phases from tadpole to
fully
grown amphibian.
Initially
, the
fertilised
eggs grow into embryos from which
very
small
tadpoles emerge and shelter under plants in the water or pond. The tadpole
begins
life
black in colour
and it has a long
tail
and shorter body. As it grows, external gills for breathing
are produced
while subsequent
stages
in its development include a longer
tail
and when this
stage
is complete back limbs
begin
to appear which
allows
the tiny creature to swim faster.
The baby frog
is nourished
from food and nutrients stored in its
tail
, and the
next
stage
in the cycle is for front limbs to
begin
growing while the
tail
shrinks and
eventually
disappears. At each
stage
the creature continues to enlarge
significantly
and
changes
in
colour
from black, to dark green and
ultimately
to bright green.
Once the
tail
has disappeared the frog
is supported
on four limbs and continues, in the final phrase, to develop into a full sized amphibian.