There is some doubt as to the different stages in the life-cycle of this species.
The life-cycle of Moniliformis moniliformis (Bremser, 1811), Acanthocephala.
In the vast majority of Gregarines, however, the life-cycle is limited to gametogony and sporogony.
On the other hand, the life-cycle is, in general, fairly simple.
The asexual part of the life-cycle was first described by Th.
The life-cycle or generation is one year, the winter being passed in the pupa stage.
We have only the remotest ideas of its "life-cycle" and a few relics of its origin and dreams of its destiny.
A preliminary note on the identity, life-cycle, and pathogenicity of an important nematode parasite of captive monkeys.
Briefly enumerated, the principal features in the life-cycle are as follows.
They grow incredibly fast with a little sun, so the chlorophyll is biologically justified in the life-cycle.
life cycle n.
The characteristic course of developmental changes through which an organism passes from its inception as a fertilized zygote to its mature state during which another zygote may be produced.
A progression through a series of differing stages of development.
|life cycle |
The series of changes in the growth and development of an organism from its beginning as an independent life form to its mature state in which offspring are produced. In simple organisms, such as bacteria, the life cycle begins when an organism is produced by fission and ends when that organism in turn divides into two new ones. In organisms that reproduce sexually, the life cycle may be thought of as beginning with the fusion of reproductive cells to form a new organism. The cycle ends when that organism produces its own reproductive cells, which then begin the cycle again by undergoing fusion with other reproductive cells. The life cycles of plants, algae, and many protists often involve an alternation between a generation of organisms that reproduces sexually and another that reproduces asexually. See more at alternation of generations.