biology - life cycles of ferns and pines
What is the function of the gametophyte generation of the fern plant?
produces reproductive organs which produce a zygote
The fully developed ovule becomes a _________.
seed
A _________ is the sticky end of a pistil where pollen is caught.
stigma
Some flowers are able to pollinate themselves.
true
Some flowers have a complete set of male and female parts for fertilization.
true
incomplete flower
A flower that lacks one or more of the following parts: pistil, stamen, calyx, or corolla.
The petals of a flower have no reproductive function.
false
The pollen produced by a gymnosperm is formed in the female cone.
false
The pistil of a flower consists of:
ovary, style, stigma
stamen
The male organ of plants. It produces pollen.
Pine cone seeds are produced in the __________ of the __________ cone.
ovule, female
meiospore
A spore produced by meiosis.
The pine cone seed is the:
container for the fertilized egg
The __________ flower has both __________ stamens and __________ pistil parts.
perfect, male, female
female flower
A flower that has female parts only. It has pistils, but no stamens.
male flower
A flower that has male parts only. It has stamens but no pistils.
sorus
A group of sporangia in ferns.
annulus
A row of specialized cells around the sporangium of most ferns. It plays a role in opening the sporangium and releasing spores.
microsporangium
A sporangium that produces microspores.
sporangium
A spore-producing cell or structure in protists and plants.
filament
A stalk which supports the anther. It is part of the stamen.
ovule
A structure within the ovary of a flower that contains the female gametophyte. It develops into a seed after fertilization.
homosporous
Producing spores that are all the same in size and shape.
heterosporous
Producing spores that are different in size and shape.
stigma
The sticky, terminal end of the pistil where pollen is caught in pollination.
pollen tube
The tube that grows from the pollen grain to penetrate the ovule for fertilization.
pollination
Transfer of pollen from male to female cones in gymnosperms, or from anther to stigma in flowering plants.
Spores produced by the small male cone of a pine tree are produced by ___________.
meiosis
The green leafy plants recognized as ferns are from the _________ generation of the plant.
sporophyte
The gymnosperm tree or shrub comprises the ___________ generation of the plant.
sporophyte
How does the egg of a flower become fertilized?
when the pollen tube grows into the ovule
Pollination of a flower requires that the pollen produced in the _________ be deposited on the __________.
anther, stigma
style
A column-like part of the pistil that supports the stigma of a flower.
ovulate or seed cone
A female cone in gymnosperms. It produces seeds.
complete flower
A flower containing a pistil, stamen, calyx, and corolla.
perfect flower
A flower having both male and female parts.
corolla
The collective term for the petals of a flower.
calyx
The collective term for the sepals.
pistil
The female part of the flower.
prothallium
The gametophyte generation of a fern.
The organ that produces the egg cell in the life cycle of the pine is called the __________.
archegonium
About one year is required in the gymnosperm:
between pollination and fertilization
The collective term for the sepals is _________.
calyx
A flower's sepal is part of the corolla.
false
The ripened ovaries of a flower produce:
fruit
Plants that produce seeds within a cone are called __________.
gymnosperms
In considering the difference between the male and female pine cones, the _________ is small, short-lived, and nearly unnoticeable on the tree. The _________ is the one we recognize as the pine cone.
male, female
The gametophyte generation of a fern is called the _________.
prothallium
The gametophyte and sporophyte generations of ferns differ from one another in that the long-lived __________ has __________ tissue. The ____________ is small, heart-shaped, and lives only a few weeks.
sporophyte, vascular, gametophyte
