science reproductive system Flashcards
Define reproduction
the process of creating offspring
What is the purpose of reproduction
-increase population size
-new individuals
-genetic variation
why do cells reproduce
DNA repair
tissue repair
Growth
what is mitosis
parent cells making 2 identical daughter cells
what is asexual reproduction?
when creating offspring is entirely done by one parent
what is sexual reproduction
when creating offspring is done by two parents fusing their gametes
what are the advantages of asexual reproduction
-only one parent required
-less time and energy
what are the disadvantages of asexual reproduction
-no genetic variation
-more offspring
what are the advantages of sexual reproduction
-more genetic variation
what are the disadvantages of sexual reproduction
-more time and energy
-requires two parents
what is Budding
parents cells form a bud that develops into new organisms
what is Binary fusion
parents cell splits into 2 identical daughter cells
what is fragmentation
parent breaks into fragments all new organisms
what is spores
single cells that develop into offspring with perfect locations
what are parthenogenesis
unfertilized egg turned into offspring
what is internal fertilisation
sperm and ova fuse inside female
what is external fertilization
sperm and ova fuse outside female
what are the male parts of a flower
anther
filament
what are the female parts of the flower
stigma
styles
ovary
ovule
how does pollination occur
when the wind, water, the flower self or animals move pollen accident or on purpose to a flower
what are all the methods of pollution
-self-pollination
-cross-pollination
-insect pollination
-wind pollution
what is an ova
female gamete
what is gamete
sex cells
what is sperm
male gamete
what is zygote
when ova and sperm fuse
