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Binary fission

In binary fission the parent organism is replaced by two daughter organisms, because it literally divides in two. Many single-celled organisms, both prokaryotes (the archaea and the bacteria), and eukaryotes (such as protists and unicellular fungi), reproduce asexually through binary fission; most of these are also capable of sexual reproduction. Some single-celled organisms rely on one or more host organisms in order to reproduce[clarification needed].

BuddingSome cells split via budding (for example baker's yeast), resulting in a 'mother' and 'daughter' cell. The offspring organism is smaller than the parent. Budding is also known on a multicellular level; an animal example is the hydra, which reproduces by budding. The buds grow into fully matured individuals which eventually break away from the parent organism. Vegetative reproductionVegetative reproduction is a type of asexual reproduction found in plants where new individuals are formed without the production of seeds or spores by meiosis or syngamy.[4] Examples of vegetative reproduction include the formation of miniaturized plants called plantlets on specialized leaves (for example in kalanchoe) and some produce new plants out of rhizomes or stolon (for example in strawberry). Other plants reproduce by forming bulbs or tubers (for example tulip bulbs and dahlia tubers). Some plants produce adventitious shoots and suckers that form along their lateral roots. Plants that reproduce vegetatively may form a clonal colony, where all the individuals are clones, and the clones may cover a large area.[5] Spore formationMany multicellular organisms form spores during their biological life cycle in a process called sporogenesis. Exceptions are animals and some protists, who undergo gametic meiosis immediately followed by fertilization. Plants and many algae on the other hand undergo sporic meiosis where meiosis leads to the formation of haploid spores rather than gametes. These spores grow into multicellular individuals (called gametophytes in the case of plants) without a fertilization event. These haploid individuals give rise to gametes through mitosis. Meiosis and gamete formation therefore occur in separate generations or "phases" of the life cycle, referred to as alternation of generations. Since sexual reproduction is often more narrowly defined as the fusion of gametes (fertilization), spore formation in plant sporophytes and algae might be considered a form of asexual reproduction (agamogenesis) despite being the result of meiosis and undergoing a reduction in ploidy. However, both events (spore formation and fertilization) are necessary to complete sexual reproduction in the plant life cycle.

Fungi and some algae can also utilize true asexual spore formation, which involves mitosis giving rise to reproductive cells called mitospores that develop into a new organism after dispersal. This method of reproduction is found for example in conidial fungi and the red alga Polysiphonia, and involves sporogenesis without meiosis. Thus the chromosome number of the spore cell is the same as that of the parent producing the spores. However, mitotic sporogenesis is an exception and most spores, such as those of plants, most Basidiomycota, and many algae, are produced by meiosis.

FragmentationFragmentation is a form of asexual reproduction where a new organism grows from a fragment of the parent. Each fragment develops into a mature, fully grown individual. Fragmentation is seen in many organisms such as animals (some annelid worms and sea stars), fungi, and plants. Some plants have specialized structures for reproduction via fragmentation, such as gemmae in liverworts. Most lichens, which are a symbiotic union of a fungus and photosynthetic algae or bacteria, reproduce through fragmentation to ensure that new individuals contain both symbionts. These fragments can take the form of soredia, dust-like particles consisting of fungal hyphae wrapped around photobiont cells. ParthenogenesisParthenogenesis is a form of agamogenesis in which an unfertilized egg develops into a new individual. Parthenogenesis occurs naturally in many plants, invertebrates (e.g. water fleas, aphids, stick insects, some ants, bees and parasitic wasps), and vertebrates (e.g. some reptiles, amphibians, fish, very rarely birds). In plants, apomixis may or may not involve parthenogenesis. AgamogenesisAgamogenesis is any form of reproduction that does not involve a male gamete. Examples are parthenogenesis and apomixis. Apomixis and nucellar embryonyApomixis in plants is the formation of a new sporophyte without fertilization. It is important in ferns and in flowering plants, but is very rare in other seed plants. In flowering plants, the term "apomixis" is now most often used for agamospermy, the formation of seeds without fertilization, but was once used to include vegetative reproduction. An example of an apomictic plant would be the triploid European dandelion. Apomixis mainly occurs in two forms: In gametophytic apomixis, the embryo arises from an unfertilized egg within a diploid embryo sac that was formed without completing meiosis. In nucellar embryony, the embryo is formed from the diploid nucellus tissue surrounding the embryo sac. Nucellar embryony occurs in some citrus seeds. Male apomixis can occur in rare cases, such as the Saharan Cypress where the genetic material of the embryo are derived entirely from pollen. The term "apomixis" is also used for asexual reproduction in some animals, notably water-fleas, Daphnia.
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Related Questions

What is the name of the cell division process that only occurs during sexual reproduction?

The process of cell division that occurs during sexual reproduction is called meiosis. This process involves the division of a cell to produce four daughter cells with half the number of chromosomes as the original cell, necessary for the formation of gametes (sperm and egg cells).


What is the name of the process of events that encompasses all of the activities of a cell from one division to the next?

Cellular reproduction.


What is the scientific name for cell division?

Mitosis is a cell division which takes place in normal body cells. Mitosis produces daughter cells which are identical to the original cell. Body cells all have the same genetic information due to Mitosis. Body cells that are produced during Mitosis all need the same genetic information so that they can do the same job as the original cell. Before the cell can divide it must make new copies of the chromosomes in its nucleus. This allows for cells that are produced to have identical genetic information. Two daughter cells are formed. Mitosis is asexual cell division.


What is the name of the type of cell division that occurs in the prokaryotic cell cycle?

The type of cell division that occurs in the prokaryotic cell cycle is called binary fission. It is a process where a prokaryotic cell replicates its DNA and divides into two identical daughter cells.


The name for the process of cell division that produces copies of cells with the 46 chromosomes is?

The process of cell division that produces copies of cells with 46 chromosomes is called mitosis. In mitosis, a parent cell divides to produce two identical daughter cells, each containing the same number of chromosomes as the parent cell.


What is the name of the process where the division of cells form haploid cells?

The name of the process where the division of cells forms haploid cells is called meiosis. During meiosis, a single diploid cell undergoes two rounds of division to produce four haploid cells, each with half the number of chromosomes as the original cell.


Another name for cell division is the phase?

Another name for cell division is mitosis, which is the process by which a single cell divides into two identical daughter cells. Mitosis is a crucial part of the cell cycle, where cells grow, replicate their DNA, and then divide to produce new cells.


What is the name of the cell that causes cell division?

kk


What is the name for cell division?

Mitosis


What is the name of the process by which DNA makes copy of itself?

asexual reproduction


What is the name given to the process in which two daughter cellls are formed that are exactly like the parent cell?

The process is called mitosis, which is a type of cell division that results in the formation of two daughter cells that are genetically identical to the parent cell.


What is another name for the cell cycle?

Another name for the cell cycle is cell division cycle.