Hello Im Here To Answer Your Question! (Big Idea)Reptiles, birds, and mammals all share similar
traits, but other, specialized characteristics classify these
animals into different groups.
Step-by-step explanation:
The large eyes and ears of this
eastern tarsier make it an excellent
nocturnal hunter. These unusual
mammals are primates and are
closely related to modern monkeys.
About the same size as a kitten, a
tarsier has strong hind legs similar to
those of frogs. The tarsier’s eyes
cannot move but it has a full range of
view because it can rotate its head
almost 360 degrees.Reptiles, birds, and mammals are all amniotes. Recall that amniotes develop
inside a membraneous sac. This sac contains everything an embryonic vertebrate needs to grow and prepare for the world outside. In some amniotes, the
sac is contained inside the mother’s body. In other amniotes, a tough outer
shell protects embryos as they develop outside of the mother. This shell is
semipermeable, which means that it allows gases such as oxygen and carbon
dioxide to pass through but prevents the embryo from drying out by holding
water inside.
An egg is a completely self-sustaining container
that provides enough energy and nutrients to
enable the embryo to mature. The illustration in
Figure 1.1 shows the different membranes found
inside an amniotic egg. The egg you may have
eaten for breakfast this morning was formed with
all of the necessary membranes and nutrient stores
to support a chicken embryo. But because the egg
was never fertilized, the genetic composition of
the egg remained haploid and did not develop into
an embryo.
The development of the amniotic egg was an
important adaptation because it allowed vertebrates
to reproduce on land. Without the self-contained
source of energy and water, an egg needed to
develop in water or else the embryo would dry out.
Predict What happens when all of the resources that
are stored inside the egg are used?