Algae: Life cycles
Following types of life histories are found in algae: (a) Haplontic Monophasic: It is a primitive life cycle. In this case, vegetative plant body remains haploid. Gametes are produced by mitosis and fuse to form diploid zygote. First division in zygote is meiosis. It forms haploid vegetative body. Thus zygote is the only diploid stage […]
Algae: Flagellation
The flagella of the green alga Chlamydomonas have been used as a model of flagellar structure. Flagella structure has been highly conserved throughout evolution, images from Chlamydomonas are virtually indistinguishable from flagella (or cilia – a term for a short flagellum) of mammalian cells including human sperm and certain epithelia. Chlamydomonas has been chosen because […]