BioScience Dictionary

 
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Found Asexually 8 times.

Displaying results 1 to 10.

1. Agameon
An organism that reproduces asexually only, without producing gamete s ( sperm or egg s).

2. Ascomycotina (cup fungi, sac fungi)
A subdivision of true fungi commonly known as cup or sac fungi. They reproduce asexually through externally-produced spores called conidia and sexually with the aid of specialized sacs called asci. This division includes yeasts, morels, truffles, powdery mildews, ergot and fungi responsible for other plant diseases such as chestnut blight, peach leaf curl and Dutch elm disease.

3. Cloning
The process of asexually producing a group of cells (clones), all genetically identical, from a single ancestor. In recombinant DNA technology , the use of DNA manipulation procedures to produce multiple copies of a single gene or segment of DNA is referred to as cloning DNA.

4. Division Pyrrophyta (fire algae)
This division is composed of marine organisms known as "fire" algae , so named because most of them are red in color. Fire algae are an important component of ocean plankton . The major class within this division is Class Dinophyceae, the dinoflagellate s. There are over 1100 species in this division. Members of Pyrrophyta are single-celled, photosynthetic organisms that move via two flagella . They store their food as starch , and their cell walls are made of cellulose . They usually reproduce asexually .

5. Division Schizophyta (bacteria)
This taxonomic division (which is in Kingdom Monera ) contains the bacteria (over 2,500 species). These are one-celled prokaryote s that usually reproduce asexually via binary fission (splitting in two).

6. Kingdom Monera (prokaryotes, monerans)
This biological kingdom is composed of bacteria and cyanobacteria , one-celled (sometimes colonial) organisms whose cells lack a nuclear envelope, mitochondria , or plastid s. They reproduce asexually through fission (splitting in two) and mainly gain their nutrition by absorbing it from their environment (though some species are chemoautotroph s or photosynthetic).

7. Kingdom Protista (protists)
This biologic kingdom is composed of eukaryotic organisms: unicellular and multicellular algae , slime mold s, and unicellular or simple colonial protozoan s. Protists obtain their nutrition via several methods, including photosynthesis , devouring other organisms, and absorption. Protists can reproduce sexually or asexually, and they can be sedentary or move with pseudopod s, flagella , or cilia . There are over 55,000 known living species and over 35,000 known extinct species in this kingdom.

8. Spore
A simple propagule in fungi and primitive plants, produced either sexually or asexually, and consisting of one or a few cells.

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