General Biology 2- Chapter 37
In the accompanying figure, the structure in which you find microsporocytes is labeled as
1
In the accompanying figure, the structure labeled as 2
protects the stem tip as it moves through the soil
Which of the following is the first part of the seedling to come out during germination?
radicle
Flower parts are borne on the tip of a stalk referred to as the:
receptacle
In angiosperms, the sporophyte generation
results from the fertilization of two gametes
Some _______ produce greatly thickened ends called tubers.
rhizomes
The term for physical damage to a seed coat that induces germination is
sacrification
following double fertilization in flowering plants, the ovule develops into _____ and the ovary develops into _____
seed; fruit
The generative cell within a pollen grain will develop into which of the following?
sperm cells
Rhizomes, tubers, corms, and stolons are examples of modified
stems
The female plant structure on which a pollen grain must land for sexual reproduction to occur is the
stigma
The female plant structure on which a pollen tube must grow through is the
style
Above ground shoots that develop from adventitious buds on roots are called
suckers
During embryonic development in flowering plants, the basal cell develops into the
suspensor
What type of floral attraction would work best on the pollinator in the accompanying figure?
sweet nectar
A ______ is an underground stem that is greatly enlarged for food storage.
tuber
Bat-pollinated, night blooming flowers would most likely display which two characteristics?
white petals and a strongly sweet scent
Plants that produce scentless, inconspicuous flowers with enormous amounts of pollen are adapted to which type of pollination?
wind
Fruits that develop from a flower with many separate ovaries are referred to as
aggregate fruits
Sometimes plants produce embryos in seeds without the need for meiosis and fusion of gametes. This process is known as
apomixis
_______ allows these polyploid, sterile plants to reproduce and therefore survive.
apomixis
In corn and other grasses, the leaves and stem grow through the tip of the
coleoptile
Specialized structures found in the types of seeds that are dispersed by ants are called
elaiosomes
The fusion of a sperm cell with two polar nuclei in the ovule forms the
endosperm
Two polar nuclei in the central cell of the ovule fuse with the second sperm cell to form the first cell of the triploid ______.
endosperm
Asexual reproduction in flowering plants does not usually involve the formation of
flowers, seeds , or fruits
The absorption of water by a dry seed is known as
imbibition
Biologists estimate that about 70% of all flowering plant species are pollinated by these organisms.
insects
In figure 37-4, which of the fruits is formed by the fusion of ovaries from many flowers?
h
On figure 37-4, which of the fruit listed is formed by the fusion of ovaries from many flowers?
h
Flowers that are strongly odiferous may be pollinated by:
insects
Which statement about the megasporocyte is true?
It is a diploid cell located within an ovule
Which is the correct sequence of embryonic development in eudicots?
Proembryo globular stage embryo heart stage embryo torpedo stage embryo
Which of the following mechanisms is used to prevent self-pollination in angiosperms?
Separating male and female individuals
Which of the following statements concerning the structures labeled as 4 in the accompanying figure is false?
They are derived from the integuments.
All the sepals of a flower are collectively known as the
calyx
The order of whorls from the flowers center to the periphery is
carpels, stamens, petals, and sepals
Which of the following is an example of a fruit species that can be propagated by apomixis?
citrus
Which of the following is an example of a seed dispersed by water?
coconut
Refer to the accompanying figure. Which of the fruits listed is botanically classified as a berry?
d
Sexual reproduction results in
genetic diversity among offspring
The difference between a drupe and a berry is that a drupe
has a stony pit around a single seed, while a berry is fleshy throughout with many seeds
Sexual reproduction in plants includes _____ and the fusion of _______.
meiosis; gametes
Which of the following is an example of a modified underground bud with fleshy leaves for storage?
onion
Genes for self-incompatibility usually inhibit:
the growth of the pollen tube
Which of the following is a structure that is adapted for seed dispersal by animals?
thick, indigestible seed coats
In the accompanying figure, the formation of pollen would occur in the structure labeled as _______.
1
In the accompanying figure, the structure that protects the flower as a bud is labeled as _______.
3
Endosperm tissue is
3n
In the accompanying figure, the part of the embryo that contains most of the food used by the embryonic plant during germination is labeled with the number
4
Each pollen grain produces two cells, one of which may develop into
a pollen tube
Certain orchids produce flowers and secrete scents that resemble female bees so that male bees will mount these flowers and attempt to copulate with them. This bizarre occurence is an example of
coevolution
The prolonged low temperature exposure required for the germination of some seeds
ensures that the seeds germinate in spring, rather than fall
The process illustrated in the accompanying figure is
germination in a eudicot
Refer to the accompanying figure. Which of the fruits listed would be classified as an accessory fruit?
i
Most flowers are pollinated by which method?
insects
The diploid portion of a plant life cycle is known as the
sporophyte generation
The function of cotyledons in many plants is to
store food reserves
________ is an example of a plant that produces stolons.
strawberry
Which of the following statements about asexual reproduction is true?
The offspring of asexual reproduction are genetically identical to the parent.
The shape of the bill on the bird in the accompanying figure is most likely the result of
coevolution
