Last Updated：2025/12/30
Sentence
For
example,
the
foreleg
of
the
mole
is
admirably
suited
for
digging
underground.
A
similar
modification
is
found
in
an
entirely
different
group
of
the
animal
kingdom,
namely,
in
the
mole
cricket...
In
both
of
these
cases
the
adaptation
is
the
more
obvious,
because,
while
the
leg
of
the
mole
is
formed
on
the
same
general
plan
as
that
of
other
vertebrates,
and
the
leg
of
the
mole
cricket
has
the
same
fundamental
structure
as
that
of
other
insects,
yet
in
both
cases
the
details
of
structure
and
the
general
proportions
have
been
so
altered,
that
the
leg
is
fitted
for
entirely
different
purposes
from
that
to
which
the
legs
of
other
vertebrates
and
of
other
insects
are
put.
Quizzes for review
For example, the foreleg of the mole is admirably suited for digging underground. A similar modification is found in an entirely different group of the animal kingdom, namely, in the mole cricket... In both of these cases the adaptation is the more obvious, because, while the leg of the mole is formed on the same general plan as that of other vertebrates, and the leg of the mole cricket has the same fundamental structure as that of other insects, yet in both cases the details of structure and the general proportions have been so altered, that the leg is fitted for entirely different purposes from that to which the legs of other vertebrates and of other insects are put.
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