Chapter 7:
Transport Systems
Practice Test
1.
Which of these is NOT part of the xylem in plants?
a.
companion cells
b.
tracheids
c.
fibers
d.
vessel elements
Hint
2.
What is the physical tendency of water molecules to stick together?
a.
cohesion
b.
flow
c.
adhesion
d.
absorption
Hint
3.
In vascular plants, nutrients travel through living phloem cells that have porous areas on their joined ends. What are these phloem cells called?
a.
vessel elements
b.
tracheids
c.
sieve tubes
d.
companion cells
Hint
4.
What is the intercellular fluid that is picked up and transported through a system of vessels back to the bloodstream?
a.
bile
b.
marrow
c.
blood
d.
lymph
Hint
5.
In humans, which blood vessels carry blood away from the heart?
a.
arteries
b.
atria
c.
capillaries
d.
veins
Hint
6.
What are the two proteins involved in muscle contraction?
a.
lignin and fibrin
b.
cilia and flagella
c.
actin and myosin
d.
estrogen and testosterone
Hint
7.
What is the sequence of muscle contraction and relaxation in the human heart?
a.
respiratory cycle
b.
cardiac cycle
c.
digestive cycle
d.
circulation
Hint
8.
What cells in the blood form the second line of defense against invading organisms, such as bacteria?
a.
leukocytes
b.
hemoglobin
c.
platelets
d.
erythrocytes
Hint
9.
What is the rate of breathing controlled by?
a.
chemical messengers in the blood that stimulate sweat glands
b.
receptors in the brain that monitor increases in blood acidity
c.
receptors in the aorta that respond to the acidity level of the blood
d.
sensors that monitor gas levels in the blood
Hint
10.
Which of these animals has an open circulatory system?
a.
earthworm
b.
squirrel
c.
grasshopper
d.
Hydra
Hint
