Gallery
Animals
Animals are multicellular,
eukaryotic organisms in the
biological kingdom
Animalia. With few
exceptions, animals
consume organic material,
breathe oxygen, have
myocytes and are able to
move, can reproduce
sexually, and grow from a
hollow sphere of cells, the
blastula, during embryonic
development
How do
Animals
reproduce?
DOG
Phoebe Dumagan
11 - Humss B
Sexual
Reproduction
Internal Fertilization: The union
of male and female gametes
(sperm and egg) occurs inside the
female's body. This is common in
mammals, reptiles, and some
insects.
External Fertilization: The fusion
of gametes occurs outside the
body, typically in water. Fish,
amphibians, and many
invertebrates use external
fertilization.
Courtship and Mating: Many
species engage in elaborate
courtship rituals to attract mates.
Mating involves the transfer of
sperm from the male to the
female.
How do
animals
reproduce?
Most animals reproduce
through sexual reproduction,
but some animals are capable
of asexual reproduction
through parthenogenesis,
budding, or fragmentation.
Following fertilization, an embryo
is formed, and animal tissues
organize into organ systems;
some animals may also undergo
incomplete or complete
metamorphosis
Asexual
Reproduction
Binary Fission: This involves
the division of a single parent
organism into two genetically
identical offspring. Bacteria and
some simple organisms
reproduce through binary
fission.
Budding: A new individual
develops from an outgrowth or
bud on the parent organism.
This is seen in organisms like
hydra and yeast.
Fragmentation: The breaking
of the body into fragments,
each of which can develop into
a new organism. Some starfish
and worms reproduce through
fragmentation.