cells Flashcards
binary fission
two equal daughter cells are produced
parent cell no longer exists
amoeba
budding
unequal division
daughter cell buds off the parent and is identical
forms then detaches
hydra
fragmentation
stem cutting
cut off a section of the parent and a new root system develops
plant
parthenogenesis
reproduction of ovum without fertilization
arthropods, roifers, fish, amphibians, birds, reptiles, NOT MAMMALS
stimulus like electricity causes cell to behave as though fertilize, and polar body rejoins
komodo dragon
spore production
asexual spores are specialized one-cell structures that can produce a whole new organisms if conditions permit
bread mold
regeneration
regrowth of the tissue in an organism
starfish
angiosperms
fruits
flowering plants with seeds enclosed
pollinated by animals, sometimes wind
>250 000 types
gymnosperms
cones
naked seeds on surface
pollinated by wind
<1000 types
conifers
tree that bears cones, needles
gymnosperms
characteristics of land plants
eukaryotic
cell wall (cellulose)
autotrophs (own food)
terrestrial
self pollination
the transfer of pollen from the anther of a flower to the stigma of the same flower
cross pollination
transfer pollen from one flower to the pistils of another flower
carried by bees eg.
tracheophytes
ferns, angiosperms, gymnosperms
vascular plants with tissues for conducting water
anther
head of the stamen
produces pollen
calyx
all of the sepals
corolla
all of the petals
diversity!
ideal condition resulting from cross pollination
filament
stalk whic attaches anther to flower
ovary (plant)
found in base of pistil, female anatomy of flower
contains ovules
ovule
found in ovaries
flowers eggs
will develop into seeds if fertilized
petal
gives shape and colour
accessory structure
attract pollinators
pistil
female organ of flower
contains stigma, style, ovaries, and ovules
pollen tube!
tube that grows through style when pollen reaches the stigma
transports pollen too ovaries for fertilization
stamen
male organ of flower
holds anther and filament
stigma
head of the pistil
receives pollen
stalk
holds pollen tube
connects stigma to ovaries to allow for fertilization