Reproduction
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Reproduction is the biological process by which new individual organisms – offspring – are produced from their parent or parents. There are two forms of reproduction: asexual and sexual.
Production of new individuals along a leaf margin of the miracle leaf plant (Kalanchoe pinnata). The small plant in front is about 1 cm (0.4 in) tall. The concept of "individual" is obviously stretched by this asexual reproductive process.
Hoverflies mate in midair flight
Birds, reptiles, and mammals reproduce by internal fertilization. Male mammals ejaculate semen through the penis into the vagina during copulation.
Tree of life by Haeckel
Sexual reproduction
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Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete with a single set of chromosomes combines with another gamete to produce a zygote that develops into
Reproduction
…process by which new individual organisms – offspring – are produced from their parent or parents. There are two forms of reproduction: asexual and sexual. In asexual reproduction, an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to single-celled…
Aphid giving birth to live young from an unfertilized egg
Harvestmen mating
The nauplius larva of a penaeid shrimp
An Australian emperor dragonfly laying eggs, guarded by a male