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2 adaptions of the female sex cell
large food store,half the genetic information in the nucleus
2 adaptaions of the male sex cell
tail to swim,contains 50% of the dna that goes to the offspring in the nucleus
where is sperm made
testes
4 organs that make up the male reproductive system
,testes,sperm duct,uretha,penis
4 organs that make up the female reproductive system
ovaries,uterus,cervix,vagina
what 3 changes happen to female and males during purberty
underarm hair grows,pubic hair grows,sweat more,
what 2 changes happen to females during puberty
breasts develop,menstural cycle
what 2 changes happen to men only during puberty
testes and penis get larger,testes start to produce sperm
what does fertilisation mean
when an egg and sperm nuclei fuse together
what does ejacualtion mean
the release of sperm through the penis
what does implantation mean
when the embyo sinks into the uterus lining
what is the gestation period of a human
40 weeks
what is the fertilised egg called before it implants into the uterus lining
zygote
what makes up the stamen
anther and filament
what makes up the carpel
stigma,style,ovary,ovules
what are the gametes in plants
egg cell and pollen
4 ways seeds are dipersed
wind,water,explosion,animals
what does germination mean
when a seed grows into a plant