SEXUAL REPRODUCTION
Occurrence Ectocarpus is a brown alga. It is abundantly found throughout the world in cold waters. A few species occur in fresh waters. The plant grows attached to rocks and stones along coasts. Some species are epiphytes on other algae like members of Fucales
Division Chlorophyta Class Chlorophyceae Order Conjugates Sub-order Zygnemoideae Family Zygnemaceae Genus Spirogyra Occurrence Spirogyra is a large genus. It is widely distributed and found throaghout the world. It has of about 300 species. It is found in fresh water. It grows as free floating
Bacterial Reproduction Both asexual and sexual reproduction occurs in bacteria. Asexual reproduction Asexual reproduction in bacteria occurs by binary fission. It occurs during favourable conditions. The size of bacteria becomes double. Bacteria absorb nutrients. It synthesizes its DNA. Bacteria also develop other material for
Meiosis is a type of cell division in which number chromosome reduced to one half in the daughter cell. Sexual reproduction requires a genetic ontribution from two different sex cells. Egg and sperm cells are specialized sex ells. They are called gametes. A male
