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26 Cards in this Set

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a cell haveing 26 chromosomes divides to produce two daughter cells, each haveing 26 chormosomes, the choromosomes number of the daughter cell is due most directly to
replication and migration of single-stranded chromosomes
if an organism reproduces asexually it offspring will most likely be
genetically identical to the p[arents
which evebt occurs in the cytoplasmic division of plants cells but not in the cytoplasmic division of animals cells
cell plate formation
grafting
a cutting from one plant called the scion is attached to the main body of a rooted plant the stock the scion keeps its own identity seedless oranges and grapes are propagted by grafting
cutting
pieces of roots, stems or leaves develop into new plants under proper conditions rose, sugar cane and bananas are propagated this way
rhizomes
long moified stem that grow horizontally under the soil new plants are produced at nodes along the stem lawn grasses ferns and irises reproduce by rhizomes
tubers
underground stems that contain stored food. white potatoes are tubers the eyes of the potato are buds which can develop into new plants
bulbs
undergound stems specialized for food storage the food is stored in the thick leaves of the bulb each bulb can develop into a new plant onions are bulbs
runners
stems that grow out over the surface of the soil from the exisiting stem at the point along the runners new plants grow. runners occur in strawberrery and some grasses
ovule
eggs in a plant
stamen
make part of plant
ovary
contains ovule eggs
pistil
female part of flower
petal
used to attract insects and other animals to the flower
filament
holds up anther
anther
produces pollen
receptacle
holds up and supports flower strutctures
sepal
protect flower when it is a bud
style
holds up stigma and commect it to ovary
internal fertilizantion occurs in the reproductive cycle of which organism?
a snake
which type of fertilization and development is exhibited by birds and many reptiles?
internal fertilizantion and external development
in humans the number of sperm cells required to produce a pair of identical twins is?
1
what is a function of the fluid produced by the glands associated with the human male reproductive systems?
it transports sperms
in which stage is an egg is released from follicle?
ovulation
in which stage is estrogen is secreted initiating the thicking of the uterine lining
follicle stage
ovaries produce reproductive structures know as
egg cells