|
Most angiosperms are dicots and most dicots are |
eudicots |
|
Monocot floral parts usually occur in multiples of |
three |
|
Which of the following is a characteristic of eudicots? |
a taproot system |
|
Which of the following statements is false? |
Plant root hairs help to absorb carbon dioxide from the soil |
|
What is the node of a plant stem? |
the point of leaf attachment |
|
Removing the terminal bud of a plant that shows apical dominance will cause |
increased growth of the axillary buds |
|
The chief function of root hairs is to |
increase the surface area for absorption of water and minerals |
|
A plant stem modified for storage of food such as starch is called a |
tuber |
|
Which of the following statements is false? |
White potatoes are modified plant roots |
|
Which of the following plant cells or tissues help regulate the movement of carbon dioxide into and out of a leaf? |
guard cells |
|
The cells that store starch in dicot roots are located between the |
epidermis and the vascular cylinder. |
|
In general, plant dermal tissues are found |
at the outer surface of a plant. |
|
Which of the following statements is false? |
Each vein in a leaf is composed of either xylem or phloem, but not both. |
|
Which of the following structures is found in both plant and animal cells? |
mitochondria |
|
Sieve-tube elements are plant cells that are part of a plant tissue called |
phloem |
|
Which type of vascular tissue cell in a plant is dead at maturity? |
vessel elements |
|
Which of the following substances, by providing strength, allows sclerenchyma cells to provide support and play a role analogous to that of an animal’s skeleton? |
lignin |
|
Photosynthesis occurs in which type of plant tissue? |
parenchyma |
|
Which of the following is a function of tracheids? |
water conduction |
|
Which of the following cells provide flexible support to the growing parts of plants? |
collenchyma cells |
|
New growth that increases stem length on a plant arises mainly from |
apical meristems |
|
The growth that pushes a root down through the soil takes place through |
cell elongation behind the root tip |
|
If you carve your initials in the trunk of a tree, will they move up as the tree grows? |
No, because elongation occurs just below the tips of growing stems in the apical meristems |
|
The three tissue systems of a mature plant root complete their development in the root zone of |
differentiation |
|
Most trees and shrubs continue to grow year after year. Such plants are known as |
perennials |
|
The increase in girth associated with production of wood and bark in trees occurs as a consequence of |
secondary growth |
|
Bark consists of |
secondary phloem, cork cambium, and cork. |
|
What is the difference between the heartwood and sapwood of a tree? |
Heartwood no longer transports water and minerals, while sapwood still conducts xylem sap. |
|
The male organ of a flower is the |
stamen |
|
In a showy flower such as a magnolia or rose, the flower parts that play the main role in attracting the notice of animal pollinators are the |
petals |
|
Before it opens up into full blossom, the outer green layer of a rosebud consists of the leaflike |
sepals. |
|
Flowers bear seeds that develop from ovules housed in protective chambers called |
ovaries |
|
How many chromosomes are there in a maize egg cell nucleus as compared to a maize pollen cell nucleus? |
the same number |
|
a flowering plant, the cells that give rise to sperm undergo meiosis in the |
anthers |
|
Which of the following flower parts produces female gametophytes? |
ovules |
|
In angiosperms, the process of ________ ensures that the endosperm will develop only in ovules containing a fertilized egg. |
double fertilization |
|
How does the sperm of an angiosperm reach the egg? |
via the pollen tube that grows from the pollen grain through the carpel tissues to the ovule |
|
A seed develops from a(n) |
ovule |
|
The "halves" of an individual peanut, which represent its cotyledons, develop from the fertilized zygote and are composed of |
diploid embryo sporophyte cells. |
|
How many chromosomes are there in a maize embryo cell nucleus as compared to a maize endosperm cell nucleus? |
two-thirds as many |
|
Which of the following is a function of fruits? |
seed dispersal |
|
A mature ovary, specialized as a vessel that houses and protects seeds, is a |
fruit |
|
Which of the following plant parts commonly contributes to asexual reproduction? |
roots |
|
The genetically identical organisms that result from asexual reproduction are called |
clones |
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