Pollen is received by the
stigma.
style.
ovary.
carpel.
The parts of the pistil are the
anther and filament.
stigmas, style, and ovary.
petals and sepals.
calyx and corolla.
Some tropical plants have anthers that--
look like modified leaves with imbedded sporangia.
are exactly like microsporangia of cycads.
are modified gametes.
are modified megasporangia.
The corolla is composed of
petals.
sepals.
stamens.
carpels.
Flowers are--
modified roots.
modified stems.
modified gametophytes.
modified internodes.
Fertilization in angiosperms require--
one sperm.
two sperm, one of which degenerates.
two sperm, one of which fuses with the endosperm nuclei
many sperm.
The flower part are attached to a part of the flower stalk called the--
receptacle.
pedicle.
pistil.
filament.
Fruits can develop from--
pedicles.
carples or pedicles.
Which of the following lists the parts of the flower in order from the outside to the inside?
Sepals, petals, anthers, pistils
Petals, sepals, anthers, pistils
Sepals, petals, pistils, anthers
Petals, sepals, pistils, anthers
Angiosperms differ from most other land plants in that they have--
double fertilization.
vascular tissue.
Angiosperms are--
the most diverse group of plants.
less diverse than gymnosperms.
all land plants.
all have conspicuous flowers.
The pollen generative cell divides to produce--
a sperm nucleus.
a tube nucleus.
two sperm nuclei.
two tube nuclei.
Carpels are most likely--
modified megasporophylls.
modified microsporophylls.
The calyx is composed of--
Zamia belongs to the--
ginkophyta.
cycadophyta.
coniferophyta.
gnetophyta.
In pines, the male gametophyte takes a few [blank] to fertilize the egg of the female gametophyte.
hours
minutes
months
All seed plants are--
heterosporous.
homosporous.
monoecious.
dioecious.
Which generation is the dominate generation in gymnosperms?
Sporophyte
Gametophyte
Which of the following is an evolutionary advantage of seeds?
Seeds provide food for the developing sporophyte.
Seeds provide protection.
Seeds allow for delayed germination until conditions are favorable.
Pollen grains are reduced--
sporangium.
sporophylls.
male gametophytes.
female gametophytes.
The archegonium of pines forms within the--
female gametophyte.
pollen tube.
microsporangium.
Ginko is--
vegetatively propagated (no sexual reproduction).
very sensitive to air pollution.
There is adequate redwood and Douglas Fir timber for this century.
The term gymnosperm refers to--
naked seeds.
seeds enclosed in a fruit.
sperm enclosed in pollen.
sperm enclosed in a fruit.
Pines belong to--
Gymnosperms such as pine produce--
vast amounts of pollen.
very little pollen.
seeds in only a few weeks.
pollen in megasporangia.
Which of the following belong to Division Pinophyta?
Hemlock
Spruce
Cypress
Ephedra
The archegonium contains--
large spores.
small spores.
eggs.
sperm.
Sporophylls of club mosses--
bear sporangia on their lower surfaces.
are always morphologically distinct from vegetative leaves.
are always photosynthetic.
can be grouped into strobili.
The dominate generation of horsetails is the [blank] generation.
sporophyte
gametophyte
Spores of homosporus farms--
develop into green gametophytes.
only germinate in the dark.
develop into sporophytes.
develop into fiddleheads.
Lycopodium and Selaginella--
are both homosporous.
have mycorrhizal fungi in their gametophytes.
require water for fertilization.
Spores of Lycopodium are homosporous. This means that--
there are two different sizes spores in one plant.
spores are all the same size.
A megaspore will grow into the--
male gametophyte.
Horsetails can be used for--
feeding livestock.
polishing pots and wood.
reducing a headache.
sterile wound dressing.
A sporophyte is a--
modified leaf that bears a sporangium.
container for spores.
container for gametophytes.
The earliest vascular plants appeared in the fossil record about--
100,000 years ago (last ice age)
100 million years ago (the time of the dinosaurs)
400 million years ago (with the appearance of the first vertebrate fossils)
The gametophyte generation is produced by--
meiosis.
mitosis.
Bryophytes have--
true roots.
structures which anchor the to the soil called rhizoids.
While most bryophytes grow in wet areas, some have developed tolerance to dry conditions and can survive desiccation.
The sporophyte generation is--
diploid.
haploid.
Hornworts have archegonia that are--
imbedded in the thallus.
born on stalks above the thallus.
at the tip of the stem.
The moss gametophyte generation is--
polyploid.
When spores germinate, the developing chains of cells are called--
gametophytes.
buds.
protonema.
Aside from the production of spores, all other cell divisions in the gametophyte and sporophyte generations are produced by mitosis.
The container in which spores are formed is called a(n)--
operculum.
antheridium.
archegonium.
The dominate generation of the Marchantia is the [blank] generation.
The moss mature sporophyte consists of three parts. These are the--
protonema, bud, and moss plant.
foot, setae, and capsule.
Mosses belong to the division--
Bryophyta.
Hepatophyta.
Anthocerotophyta.
Mosses have--
true xylem and phloem.
conducting tissue but not true xylem and phloem.
no conducting tissue.
In which of the following is the gametophyte generation the dominate generation?
Hornworts
Liverworts
Mosses
As plants moved to land, adaptations to a land environment became necessary. To avoid desiccation, bryophytes developed--
a waxy cuticle.
xylem and phloem conducting tissues.
stomates to protect against water loss.
lignin.
conducting tissues that are not true xylem and phloem.
Mosses determine sex by--
environmental cues.
an X and Y chromosome system.
The moss sporophyte obtains nourishment from the--
soil.
leaves.
gametophyte.
Aquatic habitats have advantages over land habits. This includes--
more available light.
more available CO2.
a constant source of water.
