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BIO 102 Test 3
Chp 17
48
Biology
Undergraduate 1
04/10/2012

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Term
The vast bulk of the soil has its origin in:
Definition
the weathering of solid rock.
Term
What type of plant tissue can be described as "elongated but flexible, stringy cells"?
Definition
collenchyma
Term
Sugars produced in the leaves of a plant are transported elsewhere in the plant through:
Definition
sieve tubes that make up the phloem.
Term
The size of the stomatal opening is controlled by:
Definition
guard cells.
Term
Phloem is largely composed of cells known as:
Definition
living sieve tube cells
Term
The specialized pores that facilitate gas exchange in plants are known as:
Definition
stomata.
Term
Which of the following is true about monocots and dicots?
Definition
Monocots are flowering plants.
Term
The _____________ is the region of the plant that undergoes rapid mitotic cell division and is the plant's main source of cells.
Definition
meristem
Term
Cohesion of water molecules in the xylem of a plant is a result of:
Definition
hydrogen bonds between the oxygen of one water molecule and a hydrogen of another water molecule.
Term
In eudicots, the phloem is found:
Definition
within vascular bundles, on the outside part facing the epidermis.
Term
A germinating corn kernel produces a seedling with one cotyledon, whereas a germinating tomato seed produces a seedling with two cotyledons. From this information, what is a corn plant and what is a tomato plant?
Definition
A corn plant is a monocot ; a tomato plant is a dicot.
Term
Evaporation from the leaves of a tree will pull water up through the roots as an unbroken column throughout the entire height of the tree. This feat is possible because of which characteristic of water?
Definition
cohesion
Term
There are two different analogies to describe how fluid is transported through a plant; that of the drinking straw (negative pressure) and that of the hose (positive pressure). Which of the following properly links the type of vascular tissue with its corresponding analogy?
Definition
xylem: straw; phloem: hose
Term
All of the following are ground tissue cell types except:
Definition
meristem.
Term
Which of the following properly contrasts the two varieties of dicot leaves; simple and compound?
Definition
Simple leaves are flat and not divided into sections. Compound leaves are divided into separate leaflets.
Term
Which of the following important crop plants is associated with nitrogen-fixing bacteria?
Definition
soybeans
Term
Which of the following is NOT a function of a plant's stem?
Definition
serve as the primary site of photosynthesis in the plant
Term
Which of the following is NOT a proper description of the cuticle of a flowering plant?
Definition
The cuticle covers every portion of a flowering plant.
Term
Carnivorous plants digest small invertebrate animals. These animals are broken down by the plant's enzymes and the products are used to supplement the plant's supply of:
Definition
nitrogen.
Term
The __________ is made of dead cells with rigid cell walls that provide a plant with support, as well as conducting water through the plant.
Definition
xylem
Term
Which of the following is most important in providing structural support in vascular plants?
Definition
xylem
Term
Plants do not grow well in pure clay soils because:
Definition
the soil packs so tightly that the amount of oxygen that can reach the roots is limited.
Term
In trees, the epidermis on the stem and roots is replaced by a protective covering of dead:
Definition
cork cells.
Term
The cuticle of a leaf is:
Definition
a waxy non-living layer that minimizes water loss.
Term
Which is NOT true about plant nutrition?
Definition
No plant can grow without soil.
Term
What do sclerenchyma, parenchyma, and collenchyma cells have in common?
Definition
They are all types of ground tissue.
Term
Humus is:
Definition
decomposing organic material in the soil.
Term
The _____________ is the region of the plant that undergoes rapid mitotic cell division and is the plant's main source of cells.
Definition
meristem
Term
Xylem tissue conducts water while phloem tissue conducts:
Definition
sugary sap.
Term
Which of the following tissues is found in the stem of a plant but not found in the leaves of a plant?
Definition
meristematic tissues
Term
Sugars produced in the leaves of a plant are transported elsewhere in the plant through:
Definition
sieve tubes that make up the phloem.
Term
Which of the following statements is most correct concerning the movement of materials through the stomata?
Definition
Water and O2 move out, CO2 moves in.
Term
The pressure-flow hypothesis for phloem movement would predict a movement of sugars from leaves to storage areas under which of the following conditions?
Definition
Leaves produce sugars; storage areas convert sugars to starch.
Term
Magnesium is an important nutrient for plants. This is because:
Definition
magnesium is a component of chlorophyll.
Term
The sugar in pure maple syrup is stored in a maple tree:
Definition
as starch in root cells.
Term
Which of the following, if added to soil, would best prevent minerals from being leached away?
Definition
humus
Term
A plant takes up water through its ___________ and expels water through its ____________.
Definition
roots; leaves
Term
Why are leaves generally very thin?
Definition
Sunlight cannot penetrate more than a few layers of cells.
Term
Mycorrhizae are beneficial to plants mostly because:
Definition
hey help increase water absorption into the roots.
Term
Sugars are transported through the phloem:
Definition
All of the above are correct.
Term
What are the initial leaves produced by a seedling called?
Definition
cotyledons
Term
The ground tissue that fills the area between the epidermal cells and the vascular tissue in flowering plants is called the __________.
Definition
cortex
Term
Water is moved from the roots to the tops of trees using which of the following physical principles?
Definition
All of the above are involved in water transport.
Term
Which of the following is a function of a plant's roots?
Definition
anchor the plant in place
Term
Plants can have one of two kinds of roots, a taproot or a fibrous root system. Which of the following describes the differences between these two systems?
Definition
Only answers a) and c) are true descriptions
Term
Stomata are:
Definition
holes created by open guard cells in a leaf.
Term
Which of the following is TRUE about plant leaves?
Definition
They must allow some water vapor to escape through stomata in order to transport water from the roots into the leaves.
Term
Just like the human body is composed of many different tissue types, a flowering plant is made of various tissues. Which of the following is NOT one of the tissues of a flowering plant?
Definition
air tissue
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