Site MapHelpFeedbackChapter Quiz
Chapter Quiz
(See related pages)



1

True or false. One of the greatest obstacles a eukaryote must overcome is that increases in size translate to greater increases in surface area than in volume.
A)True
B)False
2

What plant nutrient is a macronutrient?
A)zinc
B)copper
C)nitrogen
D)molybdenum
3

True or false. Technicians often cover nuclear waste dump sites with live plants as a protective barrier because plants do not absorb radioactive strontium.
A)True
B)False
4

What resource provides the major source of nutrients and water to the plant?
A)soil A horizon
B)soil B horizon
C)soil C horizon
D)atmosphere
5

True or false. Roots offer a poor example of biological maximization of surface area.
A)True
B)False
6

Minerals enter the cell of a root by ________.
A)diffusion
B)facilitated diffusion
C)active transport
D)an unknown transport mechanism
E)both B and C
7

How are legumes at an advantage over non-leguminous plants in nutrient-poor soil?
A)legumes can become dormant under stressful conditions .
B)legumes have nodules containing nitrogen-fixing bacteria
C)legumes have the capacity for luxury-uptake and can hoard nutrients
D)Legumes are not at an advantage over non-leguminous plants in poor soil
8

More than ___________ of the water that enters the leaf eventually leaves via transpiration.
A)10%
B)25%
C)50%
D)90%
9

How does water in the xylem travel to the mesophyll in the leaves?
A)by osmosis due to osmotic pressure in leaf tissue
B)by active transport
C)by a pumping mechanism unique to plants
D)by a vacuum created within the leaf petioles
10

What properties of water enable it to travel long distances up a plant?
A)cohesion
B)adhesion
C)ice is less dense than liquid water
D)Both a and b are correct.
E)All of these are correct.
11

True or false. The thinner the diameter of the xylem tube, the higher water can travel in the plant
A)True
B)False
12

A break in the flow of water through xylem is called ____________.
A)guttation
B)cavitation
C)dehydration
D)None of these is correct.
13

What happens to the plant when too many xylem tubes cavitate?
A)it collapses
B)it loses turgor pressure and dies
C)the top of the plant dries out
D)parasitic viruses invade
14

How does water move into the root?
A)by osmosis due to osmotic pressure in root tissue
B)by active transport
C)by a pumping mechanism unique to plants
D)by a vacuum created within the root
15

In the __________ pathway in the root, water moves through plasmodesmata connecting root cells.
A)apoplastic
B)symplastic
16

The waterproof ______________ blocks apoplastic movement of water, forcing water and materials to enter root cells.
A)root cap
B)pericycle
C)endodermis
D)Casparian strip
17

Leaf photosynthate is dissolved in an aqueous solution called __________ for transportation.
A)transport droplets
B)xylem liquid
C)phloem sap
D)sieve fluid
18

What is not a component of phloem sap?
A)carbohydrates
B)proteins
C)DNA
D)hormones
19

Photosynthate distribution in the plant is best described by the ___________ theory.
A)cohesion-tension
B)pressure flow
C)fluid mosaic
D)None of these is correct.
20

True or false. Xylem is not critical to the function of phloem; the two are located next to each other only because of the meristematic tissue that forms them.
A)True
B)False





To learn more about the book this website supports, please visit its Information Center.
(c)2004 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Life, 5/eOnline Learning Center with Powerweb

Home > Chapter 27 > Multiple Choice Quiz