Thursday 31 May 2012

How the organisms in the different kingdoms reproduce

Animalia
Organisms: Mammals, amphibians, sponges, insects, starfish

Cell Type: Eukaryotic

Reproduction: Sexual reproduction and Asexual reproduction. 
Most animals reproduce sexually when half of the DNA from each of the two individual parents, in the form of a gamete. These gametes are formed via Meiosis. Some animals can reproduce asexually such as the starfish which can form identical copies of itself via fragmentation.
Plantae
Organisms: Mosses, angiosperms (flowering plants), gymnosperms, liverworts, ferns

Cell Type: Eukaryotic

Reproduction: Some species reproduce asexually by mitosis. Other species exhibit sexual reproduction
Plants can asexually reproduce via budding, fragmentation, rhizomes or stolons. Sexual reproduction in plants occurs via pollination where the pollen from the anther comes in contact with the stigma.
Fungi
Organisms: Mushrooms, yeast, molds

Cell Type: Eukaryotic



Reproduction: Asexual or sexual reproduction occur, which in fungi's case is by spore formation. These spores are created via mitosis and can grow into a multicellular organism idential to the parent.


Bacteria


Organisms: Bacteria
Cell Type: Prokariotic 

Reproduction: Binary fission. Binary fission is a form of asexual reproduction where a single parent cell produces two daughter cells identical to the parent.

Protista

Organisms: Amoebae, green algae, brown algae, diatoms, euglena, slime molds

Cell Type: Eukaryotic

Reproduction: Mostly asexual reproduction. Mitosis occurs in some species.

Simply, Asexual Reproduction occurs:

In Plants: Vegetative Formation

In Animals: Pathogenesis

In Bacteria: Binary Fission

In Fungi: Spore Formation

In Protista: Splitting