Most of the multicellular Organisms usually reproduce sexually.
In our environment, Organisms cannot live forever and that is why the continuity of the species relies on individuals reproducing. There are two types of reproduction in our environment; one is asexual reproduction and another one is sexual reproduction. There are so many unicellular Organisms such as protists and bacteria as well as some plants and some animals also reproduce asexually. Those Organisms that reproduce asexually are found in stable environments to which they are very well suited. Most of the multicellular Organisms usually reproduce sexually. In sexual reproduction, it involves male and female gametes (sperms and eggs) to form a zygote.
In asexual reproduction, organisms reproduce by mitotic divisions producing offspring that are identical to their parents- clones. In multicellular Organisms, an ordinary body cell undergoes cellular division and as a result, a new individual will arise.
There are several ways by which Organisms may reproduce asexually
Example – In yeasts, the cell does not divide equally into two halves; instead, there is a large parental cell and a smaller daughter cell.
Many hydrae reproduce asexually by producing buds in the body wall. Budding in hydra occurs when they are well-fed which results in a new bud or sub bud formation. On a specific side, due to the repeated cell division leads to the development of bud as an outgrowth. The development of buds occurs when it is fully matured. After maturation, it detaches from the main body and becomes a new independent individual. (Image to be added soon)
Parthenogenesis is considered as one of the main types of asexual reproduction where the female eggs are developed without fertilization. Pathogenesis is observed to occur naturally in invertebrates, along with some amphibians, fishes, reptiles as well.
There are some green plants that are sophisticated in this asexual reproduction. Offspring may be produced by runners, bulbs, tubers, or rhizomes.
In some plants, fruits are developed from the ovary without fertilization. This type of fruit is called parthenocarpy and process formation of fruit is called pathogenesis.
The cells of multicellular organisms are divided into two broad categories, and these are
Somatic cells are all cells of the body with the exception of the germs cells.
Germ cells are the cells that give rise to gametes. The gametes are cells that combine in sexual reproduction to form a new organism.
The main difference between asexual reproduction and sexual reproduction is:
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