How long does 4 hits of weed stay in your system? Weed stays in your fats cells. If you excercise and/or have a high metabolism it becomes a shorter peroid of time. But in a urine drug test, the use of cannabis is detectavlâ¦e for periods of up to one month. I like to dilute my pee with warm sink water and I excercise like crazy before a drug test.
Mitosis in Unicellular Organisms. In unicelullar (single-celled) organisms, mitosis is a common and important form of asexual reproduction. It can also be called binary fission, and plays a role in a similar process called multiple fission.Organisms that reproduce through mitosis make exact copies of themselves.n unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell. In multicellular organisms, mitosis produces more cells for growth and repair.
Spirogyra forms nonmotile gametes. Spirogyra undergoes sexual reproduction using a process called conjugation. First two haploid filaments of opposite mating types (+ and -) line up side by side. Each cell then forms an extension that grows towards a cell on the opposite strand. The tubes fuse forming conjugation tubes. The content from the cell of (-) strain travels through the tube and fuse with the cytoplasm of the cell of the (+) strain. The protoplast (the entire living portion of the cell) of each individual organism thus act as an isogamete until they fuse. The diploid zygote develops the zygospore.