Sexual and Asexual Reproduction Flashcards
is the creation of an offspring by fusion of a male gamete(sperm) and female gamete(egg) to form a zygote
Sexual Reproduction
is creation of offspring without the fusion of egg and sperm. One parent clones offspring
Asexual Reproduction
many invertebrates reproduce asexually by ___=separation of a parent into two or more individuals of about the same size.
Fission
new individuals arise from outgrowths of existing ones
Budding
breaking of the body into pieces, some or all of which develop into adults
Fragmentation
fragmentation must be accompanied by ___ = regrowth of lost body parts
regeneration
is the development of a new individual from an unfertilized egg
parthenogenesis
is the release of mature eggs at the midpoint of a female cycle
ovulation
reproductive cycles are controlled by ___ and ___
Hormones and Environmental cues
each individual has both male and female reproductive systems
hermaphroditism
eggs shed by the female are fertilized by sperm in the external environment
external fertilization
sperm are deposited in or near the female reproductive tract, and fertilization occurs within the tract.
internal fertilization
sex organs that produce gamete.
gonads
once a month, an oocyte develops into an ovum(egg) by process of ___
oogenesis
expels an egg cell from follicle
ovulation