Like nearly all trees Lindens reproduce sexually. Unlike animals though
the male and female parts on many trees are on the same tree. Lindens
like many trees can reproduce asexually through a process called propagation.
Propagation means that humans cut a part of the tree off and plant
it so that it grows roots and begins a new tree. Certain trees like
Navel oranges which have no seeds can only reproduce this way.
Like nearly all animals, toads reproduce sexually. Toads are amphibian,
which means they require water for their reproductive processes.
Toads have both males and females. The males and females join in
the water, and the female lays her eggs in the water. The young tadpoles
then grow up in the water until they develop into adults
Like nearly all plants, daffodils reproduce
sexually .The flower contains both male and female parts and is part
of the reproductive structure of the plant. The flower will produce
seeds which can grow into a new plant. Daffodils grow from bulbs.
The bulb can be split, and both parts will grow into daffodils, so
under special circumstances it can also reproduce asexually.
Like nearly all animals, lizards reproduce sexually. Lizards are
reptiles and lay eggs. Lizards have both males and females. The males
and females join together and the female lays her eggs in a small
hollow in dirt or sand. Large reptiles like crocodiles and alligators
actually build nests and even care for their young. Certain lizards
actually reproduce asexually and only have females. This process
is unique to a very small group of lizards and is the exception to
nearly all animals reproducing sexually.
Sponges are animals, and, like nearly all animals, reproduce sexually.
It is hard to tell the difference between male and female, but they
do have reproductive cells that join together and grow into a new
sponge. Sponges can also reproduce asexually when any part is cut
off. If the cut-off part lands or is put somewhere that is favorable,
it will grow back as a living sponge.
Mushrooms have a stage in their lifestyle when they produce spores
that are asexual and another stage when they produce male and female
cells to reproduce sexually. The mushrooms that you see are actually
asexual parts of the entire fungi, which are usually microscopic
threads under ground.
Starfish are another species that are both sexual and asexual when
it comes to reproduction. Starfish produce sex cells which combine
with the sex cells from other starfish and produce new genetically
different offspring. If starfish are injured, however, they re-grow
the damaged parts. If part of the center remains attached to a leg,
the entire animal will re-grow. This wasn't known by early oyster
fishermen. The fishermen knew that starfish pulled open and ate oysters,
so when they found them or brought them up while fishing, they would
take a knife or hatchet and cut them in half, then throw them back.
Would you recommend this action for getting rid of starfish? What
might be a better way?
A petunia is different from a daffodil. It does not grow from a bulb
and basically only reproduces sexually. It, like many other plants,
can be propagated from seeds produced in the flower.
Beetles are animals, as are all insects, and they reproduce sexually.
Bees are another insect and, although almost all the bees you see
are females, they don't reproduce. There is a queen that mates with
male bees. In most bees unfertilized eggs develop into males and
fertilized eggs develop into females. The queen stores sperm inside
her body and doesn't have to mate each time she lays eggs.
Seals, like all mammals, reproduce sexually. The come together once
a year to give birth to their young and then find a new mate.
Paramecia are single celled protozoa. They reproduce when they get
large enough. When the single cell has enough energy and other
resources, it divides into two smaller cells. Each of these cells
is genetically the same as the original.
Ferrets reproduce sexually but the ferrets you see as pets usually
have been surgically altered so they can't reproduce.
Most plants reproduce sexually. The flowers of a plant are their
reproductive structures. Pollen (containing the male genetic material)
is carried by insects, wind, or other ways to the female parts of
the flower. This small flower, like nearly all plants, reproduces
sexually. As stated before, flowers are actually part of the reproduction
system in plants.
Jellyfish go through a cycle similar to mushrooms, in that both
of them have a sexually reproducing portion of their life cycle
and both have an asexually reproducing part of their life cycle.
The asexual part is called a polyp, and it doesn't move. The
sexual part is called a medusa and is what you see at the right
top of the picture.
Fish almost always reproduce sexually. There are a few species that,
like the lizards mentioned earlier, can reproduce without males.
A few unusual species of fish can even change gender if there are
Seagulls are birds which, like nearly all animals, reproduce sexually.
Prickly pear cactus is a plant that has not only adapted to the desert
climate but is also able to reproduce both asexually and sexually.
The prickly pear has a flower and reproduces with seeds, but it also
reproduces asexually. The large pads of the prickly pear break off
easily, so if an animal like an antelope, coyote, or even a cow walks
too close, the spines of the cactus stick into them and the animal
carries the pad along for some distance. When the pad falls off or
is removed by the animal, the pad can grow into a new patch of prickly
pear cactus. This is a natural form of propagation.