Chapter
31
Animations
Art
Unit 5: The Evolutionary History of Diversity
Fungi
Review
Fungi
are
: they cannot make their own food, but feed by secreting
and absorbing the digested organic
compounds.
Most fungi
are
, but they can also
be
and
even
.
Many fungi that reproduce asexually
grow
as
or as
unicellular
.
Fungi produce haploid
through
or
life
cycles.
There are five major fungal
phyla.
Chytrids have
spores,
called
.
Zygomycetes possess heterokaryotic cells called
zygosporangia;
some produce spores in oriented
, which can be
“aimed”.
Glomeromycetes form mutualistic
mycorrhizae
with about 90% of plants.
Ascomycetes produce sexual spores in
saclike
.
Basidiomycetes include
mushrooms
and shelf fungi, as well as some
parasites.
Fungi form symbiotic relationships with many organisms.
Mycorrhizae
are
symbionts between a fungus and plants roots.
Lichens
are a
association
between photosynthetic microorganisms and a fungus.
Many species of
ants
and termites raise fungi in fungus “farms”.
Summary.
Chapter
32
Animations
Art
Unit 5: The Evolutionary History of Diversity
An Introduction to Animal Diversity
Review
Animals are multicellular,
eukaryotes
that ingest their food.
The ancestor of animals
diverged
from those of
about 1.2 billion-800 million years ago, and may have resembled
modern
.
The kingdom diversified about 525 million years ago, during the
explosion,
when many animal phyla
appeared.
Animals can be categorized by how their cells are organized according to a
plan.
symmetry
is like a flower pot, the body radiates from the center.
symmetry
has a single plane of symmetry.
Most animals
have
that develop from embryonic
layers
of the
.
Diploblastic
animals such as
jellyfish
have
germ layers:
and
.
Triploblastic
animals have
germ layers,
including
a
.
The mesoderm may develop into tissue that line a fluid–filled
space
called a
.
A
is a body
cavity
only partially lined by mesoderm tissues.
Organisms without a body
cavity
are considered
.
The coelomates show two major modes of
development.
Protostomes develop their
from blastopore of the
gastrula.
Deuterostomes develop their
from the
blastopore.
Current phylogeny places
as a clade with true
, and divides the
into three clades:
,
Lophotrochozoa,
and
Ecdysozoa.
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