Reproduction: How Life Continues

Reproduction allows organisms to produce offspring and continue their species across generations. It also introduces variation, which helps populations adapt and survive in changing environments.

Asexual reproduction involves a single parent and produces offspring identical to it without gametes. Sexual reproduction involves two parents and the fusion of gametes, producing offspring with genetic variation.

Examples of asexual reproduction include binary fission in bacteria and amoeba, budding in yeast and hydra, fragmentation in some simple animals and algae, and vegetative propagation in many plants.

Fertilisation is the fusion of a male gamete and a female gamete to form a single cell called a zygote. The zygote then divides and develops into a new individual.

Sexual reproduction combines genetic material from two different parents, so the offspring receive a new mix of genes. This mixing creates variation among individuals, which is important for adaptation and evolution.

Vegetative propagation is a type of asexual reproduction where new plants grow from a parent plant's vegetative parts such as roots, stems, or leaves. Examples include growing potatoes from tubers and rose plants from cuttings.