CH. 37 BIO

In the accompanying figure, the structure in which you would find microsporocytes is labeled as _____.

1

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: (diagram)

4

A rhizome is a horizontal aboveground stem.

False - underground

Imbibition is the process by which a seed takes in oxygen from the environment.

False - water

Endosperm is usually triploid.

True

The integuments develop into the seed coat.

True

Fruits that develop from a flower with many separate ovaries are referred to as:

aggregate fruits.

Sometimes plants produce embryos in seeds without meiosis and fusion of gametes. This process is known as:

apomixis.

All the sepals of a flower are collectively known as the:

calyx.

What is an example of a seed dispersed by water?

coconut

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 occurrence is an example of:

coevolution.

The shape of the bill on the bird in the accompanying figure is most likely the result of:

coevolution.

Corn and other grasses have a unique sheath of cells known as the ____ that surrounds and protects the young shoot.

coleoptile

Special structures found in seeds that are dispersed by ants are called:

elaiosomes.

In most developing dicot seeds, the primary source of nutritive material is in the:

endosperm.

The fusion of a sperm cell with two polar nuclei in the ovule forms the:

endosperm.

The union of gametes is called ____ and takes place within the ____ of a flower.

fertilization; ovary

As a seed develops from an ovule, the ovule wall enlarges and develop into a:

fruit

Sexual reproduction results in:

genetic diversity among offspring.

The process illustrated in the accompanying figure is: (diagram)

germination in a eudicot.

The absorption of water by a dry seed is known as:

imbibition

Most flowers are pollinated by which method?

insects

Flowers that are strongly oderiferous and blue or UV purple in color would most likely be pollinated by:

insects.

Following double fertilization, the ovule develops into a(n) ____, and the ovary develops into a(n) ____.

seed; fruit

The diploid portion of a plant life cycle is known as the:

sporophyte generation.

Rhizomes, tubers, corms, and stolons are examples of modified:

stems.

The function of cotyledons in many plants is to:

store food reserves.

Plants that produce scentless, inconspicuous flowers with enormous amounts of pollen are adapted to which type of pollination?

wind

In the process of double fertilization, one sperm fuses with the egg and the other sperm fuses with a spore.

False - the polar nuclei

Which statement about the megasporocyte is true?

It is a diploid cell located within an ovule.

Each pollen grain produces two cells, one of which may develop into a(n):

pollen tube.

In the accompanying figure, the structure labeled as 2:

protects the stem tip as it moves through the soil.

Which of the following is an example of a modified underground bud with fleshy leaves for storage?

onion

Which part of a flowering plant is the immature male gametophyte?

pollen grain

The order of whorls from the flower's periphery to the center is:

sepals, petals, stamens, and carpels

The female plant structure on which a pollen grain must land for sexual reproduction to occur is the:

stigma.

In the accompanying figure, the formation of eggs would occur in the structure labeled as ____.

6

Apomixis refers to a type of sexual reproduction.

False - asexual

The male gametophyte is also called an embryo sac.

False - female

When a microsporocyte divides, its daughter cells are diploid.

False - haploid

In double fertilization, one sperm fuses with the egg, and the other sperm fuses with the two antipodal nuclei.

False - polar

An ovule usually develops directly into a(n) fruit

False - seed

The petals constitute the outermost whorl of flower parts.

False - sepals

Which statement about asexual reproduction is true?

The offspring of asexual reproduction are genetically identical to the parent.

Which of the following is false concerning the structures labeled as 4 in the accompanying figure?

They are derived from the integuments.

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