General Biology 2- Chapter 37

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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


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