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STAMEN
Male part of the flower
anther
produces pollen
pistil
Female part of the flower
stigma
The sticky part of a flower's carpel, which receives pollen grain.
sepal
A leaflike structure that encloses the bud of a flower.
ovary
produces eggs
ovules
female reproductive cell
style
The stalk of a flower's carpel, with the ovary at the base and the stigma at the top.
cross pollinate
to fertilize a flower with the pollen from another flower
self pollinate
fertilize itself
fertilization
Fusion of an egg and sperm cell
embryo
An organism in the earliest stage of development
fruit
A mature ovary of a flower that protects dormant seeds and aids in their dispersal.
germinate
begin to grow
cotyledon
seed leaf
seed coat
The outer covering of a seed
gynmosperms
Oldest trees alive
angiosperms
flowering plants that produce seeds in fruit
spore
smaller than seed
ferns and mosses
reproduce from spores
fruiting bodies
fungi produce spores in reproductive structures
Placental development
as the trophoblast cords (little projectile fingers) are attaching to the endometrial linking of the uterus blood capillaries are growing into the t-cords from the vascular system of the newly forming embryo
about 21 days after fertilization, blood also begins to be pumped by the heart of the embryo
simultaneously, blood sinuses supplied with blood from the mother develop around the outsides of the trophoblastic cords
the trophblastic cells send out more and more projections(cords), which become placental villi into which FETAL capillaries grow
villi, carrying fetal blood are surrounded by sinuses that contain maternal blood (they do not mix)
in the final structure, the fetal blood flows out of the fetus to the placenta in 2 umbilical arteries to the capillaries of the villi and then back through a single umbilical vein into the fetus
at the same time, the mothers blood flows from her uterine arteries into the large maternal sinuses that surround the villi and then back to the uterine veins of the mother
nutrients and other substances pass through the placental membrane (aka syncitium) mainly by diffusion
complete at 12 weeks, grows until 20 weeks
marsupial development
The process which an animal is given birth at a young age, at day 1 process is slow
day 2 its growing bigger
day 10 the animal is now as big as the average thumb
at day 67 the animal is fully developed and can now exit the pouch no longer a joey
gestation
period from fertilization of the ovum to birth
marsupial
pouched mammal (like a kangaroo)
asexual reproduction
Process by which a single parent reproduces by itself
unicellular organism
An organism made up of one cell.
budding
a new organism grows by mitosis and cell division on the body of its parent
regeneration
The ability to regrow a missing part of the body
Fragmentation
A means of asexual reproduction whereby a single parent breaks into parts that regenerate into whole new individuals.
vegetative reproduction
asexual reproduction in which offspring grow from a part of a parent plant
