Herb 531 Module 4 Flashcards

A cell type that has thin primary cell walls, a large vacuole, and is living at maturity is a
a. sclereid.
b. parenchyma cell.
c. tracheid.
d. fiber.
e. vessel.

All hormones and enzymes are lipids.
true
false

Anthocyanins are water-soluble pigments found in vacuoles.
true
false

As part of the laboratory practical exam in your botany class, you must point to the axillary buds. Where should you indicate these buds occur?
a. At angles between the petioles and the stem.
b. Along internodes.
c. At tips of stems.
d. On terminal buds.
e. On roots.

Cells of the root cap ease the growth of young roots through the soil by __________.
a. secreting slippery lipids like waxes
b. producing oils
c. producing a mucilaginous lubricant
d. forcing a passage between soil particles
e. none of the above

Cell structures that apparently function in controlling the addition of cellulose to the cell wall, in steering vesicles from Golgi bodies to the cell wall, and in aiding movement within the cell are
a. Thylakoids.
b. Ribosomes.
c. Mitochondria.
d. Microtubules.
e. Lysosomes.

Leeuwenhoek is credited with applying the term cell to the boxlike compartments he saw in cork tissue.
true
false

Modified leaves are used by insectivorous plants to trap insects. One such plant that has movable modified leaves is
a. Venus flytrap.
b. sun melon.
c. pitcher plant.
d. bladderwort.
e. Both Venus flytrap and pitcher plant are correct.

Nitrogenous bases refer to specific types of amino acids
true
false

Older, nonfunctioning xylem is called
a. sapwood.
b. summer wood.
c. springwood.
d. winter wood.
e. heartwood.

On a field trip in your field botany course, you instructor has asked that you identify 10 different species of trees. One of your classmates is perplexed about this, because it is early spring and the trees do not yet have leaves. He does not understand how trees can be differentiated without leaves. What should you tell your classmate?
a. You agree that the assignment cannot be completed without seeing the leaves of the trees.
b. Trees can be specifically identified by scars and buds.
c. Trees can be specifically identified by where they grow.
d. Trees can be specifically identified by the growth patterns of their branches.

Reproduction in living organisms results in __________________.
a. new individuals of the same species
b. new individuals that are always genetically identical to the parents
c. new individuals that are never genetically identical to the parents
d. overpopulation of the community by that species
e. loss of genetic variability in the population

The __________ is derived from a simple flower having more than one pistil.
a. pome
b. pepo
c. multiple fruit
d. drupe
e. aggregate fruit

The function of companion cells is:
a. to conduct food from one part of the plant to another.
b. to aid the associated sieve tube members with its cellular activities.
c. to conduct water and minerals from one part of the plant to another.
d. to conduct food laterally.
e. to do all of the functions listed.

The parts of a flower that eventually become seeds are
a. ovaries.
b. styles.
c. stigmas.
d. ovules.
e. peduncles.

To quickly propagate a walking fern, you could look for new plants
a. at the tips of the leaves of existing plants.
b. in the flowerpot leaves of an existing plant.
c. along the bracts of an existing plant.
d. at the base of insect-trapping leaves of an existing plant.

When a seed germinates, the part of the embryo that develops into the first root is called a radicle.
true
false

When moisture enters a seed, a physical process called ______ causes the tissues to swell with tremendous expansion forces.
a. vivipary
b. imbibition
c. dehiscence
d. dehydration
e. osmosis

Which of the following is known to be modified as a tendril?
a. Rachis.
b. Leaflet.
c. Stipule.
d. Petiole.
e. All of these answers are correct.

Which tissue is derived from the apical meristem?
a. Protoderm.
b. Cork cambium.
c. Periderm.
d. Secondary phloem.
e. Secondary xylem.