Biology: Quiz 5 Sexual Reproduction in Plants
ovulate cone
female cone of gymnosperms
The fully developed ovule becomes a
seed
gametophyte generation
the haploid generation, produces gametes by mitosis
pollination
transfer of pollen from male to female cones in gymnosperms or from anther to stigma in flowering plants.
complete flower
A flower that has all four basic floral organs: sepals, petals, stamens, and carpels.
female flower
A flower that has female parts only. It has pistils, but no stamens.
incomplete flower
A flower that lacks one or more of the four organs: sepals, petals, stamens, or pistils.
perfect flower
A flower with both stamens and a pistil or pistils.
sorus
A group of sporangia in ferns.
Vascular plants have a______ alternation of generations.
Heteromorphoic
prothallium
The gametophyte generation of a fern.
Pine cone seeds are produced in the _______ of the _______ cone.
ovule, female
What is the function of the gametophyte generation of the fern plant?
produces reproductive organs which produce a zygote
sorophyte
the diploid generation. One that produces spores by meiosis
Annulus
A row of specialized cells around the sporangium of most ferns. It plays a role in opening the sporangium and releasing spores.
Alternation of generations
the idea that the sporophyte generation and the gametophyte generation follow one another in alternating fashion.
stamen
the male organ of plants. it produces pollen.
The pistil of a flower consists of:
-ovary -stigma -style
meiospore
A spore produced by meiosis
sporangium
A spore producing cell or structure in protists and plants.
microsporangium
A spore-producing structure that produces microspores
filament
A stalk which supports the anther. its 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
heteromorphic alternation of generations
Alternation of generations in which the sporophyte an gametophyte generations have a different size, shape and appearance
pistil
Female part of the flower
homosporous
Producing spores that are all the same in size and shape.
style
a column like part of the pistil that supports the stigma of a flower.
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
corolla
collective term for petals
calyx
collective term for sepals
The pine cone seed is the:
container for the fertilized egg
The ripened ovaries of a flower produce:
fruit
is small, heart-shaped, and lives only a few week
gametophyte
The pollen produced by a gymnosperm is formed in the
male cone
Spores produced by the small male cone of a pine tree are produced by
meiosis
heterosporous
producing spores that are different in size and shape
The gametophyte generation of a fern is called the
prothallus
An increasingly intricate relationship exists between the gametophyte and sporophyte generations in vascular plants. As vascular plants live longer, they increase in size and complexity and the ______ generation becomes dominant, while the ______ generation becomes smaller and of shorter duration.
sorophyte, gametophyte
Life cycles found in vascular plants are variations of the
sporic life cycle
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
The one that lives long and have vascular tissue
sporophyte
male flower
A flower that has male parts only. It has stamens but no pistils.
sporic life cycle
A life cycle in which the sporophyte is more than the zygote, and the gametophyte is more than a gamete. The gametophyte and the sporophyte alternate with one another through time.
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
How does the egg of a flower become fertilized?
when the pollen tube grows into the ovule