Animal Reproduction
Asexual reproduction - fission
Sea anemone
Paramecium
Planaria
Asexual reproduction - budding
Hydra
Porifera
Planaria
Asexual reproduction - parthenogenesis
Honey bee
rotifers
aphids
daphnia
coral
External fertilization
Internal fertilization
Vertebrate copulatory organs. (a) Clasper of dogfish (Squalus). Glans penis of (b) opossum, (c) ram, (d) bull, (e) short-tailed shrew, (f) man, (g) Echidna.
Internal fertilization
Internal fertilization
collembola
salamander
Sperm competition – mate guarding
Sperm competition – mating plug
mouse
Sperm competition – toxic seminal fluid; sperm displacement
Prolonged copulation
hermaphroditism
simulataneous sequential