WorksheetsIB biology SL transport
Total questions: 60
Worksheet time: 30mins
I. adhesion
II. cohesion
III. evaporation
IV. active transport
I. Active transport
II. Bulk flow (with water)
III. Transport by Phloem
I. To get rid of excess CO2
II. To allow transpiration
III. To exchange gases with the environment
Which of the following are true of xylem vessels?
I. They have no end walls
II. They have pores (pits) in the outer cell wall
III. They contain lignin
I and II only
I and III only
II and III only
I, II and III
The diagram shows a cross section from a plant organ.
What is the plant organ, tissue A and tissue B?
Organ = root; A = xylem; B = phloem
Organ = root; A = phloem; B = xylem
Organ = stem; A = xylem; B = phloem
Organ = stem; A = phloem; B = xylem
Water travels from root hair cells to the leaves.
What is the passage of water between these structures?
xylem --> cortex cells --> mesophyll cells
cortex cells --> mesophyll cells --> xylem
xylem --> mesophyll cells --> cortex cells
cortex cells --> xylem --> mesophyll cells
Place these statements in the correct order.
I. water enters root hairs by osmosis
II. the solute concentration inside root hairs increases
III. water enters xylem vessels by osmosis
IV. mineral ions enter root hairs by active transport
I --> II --> IV --> III
I --> IV --> II --> III
IV --> II --> I --> III
IV --> I --> II --> III
Which of the following is true of leaf structure?
the main site of photosynthesis is the spongy mesophyll cells
the lower surface has a thicker waxy cuticle than the upper surface
palisade mesophyll cells are arranged far apart to create air spaces
the lower surface contains more stomata than the upper surface
Transpiration involves the evaporation and diffusion of water vapour.
What happens to the water vapour during transpiration?
evaporation from mesophyll cells followed by diffusion through stomata
diffusion from mesophyll cells followed by evaporation through stomata
evaporation from stomata followed by diffusion through mesophyll cells
diffusion from stomata followed by evaporation through mesophyll cells
Which force directly causes water molecules to stick to the xylem wall?
tension
cohesion
adhesion
gravity
Which force causes water molecules to be drawn out of the xylem walls at the leaf?
cohesion
adhesion
tension
gravity
Which force causes water molecules to stick to each other by hydrogen bonds?
tension
adhesion
cohesion
gravity
What causes the water in xylem vessels to be under tension?
gravity
cohesion
adhesion
evaporation
An increase in which factor would decrease the rate of transpiration?
wind
temperature
humidity
light
Which of the following explains why having sunken stomata reduces the rate of transpiration?
less water molecules blown away gives a lower concentration gradient
more water molecules blown away gives a lower concentration gradient
less water molecules blown away gives a higher concentration gradient
more water molecules blown away gives a higher concentration gradient
What is a characteristic of xerophytes?
Absence of roots
Absence of vascular tissue
Leaves with very small surface area
Large number of stomata
Which of the following help(s) in supporting a terrestrial woody plant?
I. Xylem tissue
II. Turgor pressure
III. Phloem tissue
I only
I and II only
II and III only
I, II and III
A fungicide is a chemical that kills fungi. A fungicide dissolved in water was applied to the soil in which a rose plant was growing. It later appeared in the leaves. How did the fungicide reach the leaves?
Transpiration pull in xylem
Facilitated diffusion
Translocation in phloem
Movement up a water potential gradient
Which of the following are true of phloem tissue?
I. plasmodesmata separate each sieve element
II. companion cells contain many mitochondria for active transport
III. the lumen of sieve elements has no organelles
I and II only
I and III only
II and III only
I, II and III
What type of muscle is found in the heart?
skeletal
smooth
voluntary
cardiac
Which is correct about the SA node?
located in left atrium
a collection of cardiac cells initiating action potentials
referred to as the artificial pacemaker
it is the equivalent of the AV node in birds
In general, what is systole?
contraction
the same as diastole
relaxation
the system of blood vessels in the heart
What causes the "lub" sound?
AV valves closing
AV valves opening
semilunar valves closing
semilunar valves opening
An artificial pacemaker would be beneficial for which one of the following conditions?
obesity
inability of brain to send rhythmic signals to the hear
malfunctioning SA node
narrowing of coronary arteries
What chamber of the heart has the thickest walls?
right atrium
left atrium
right ventricle
left ventricle
The human heart is referred to as myogenic because
nerve impulses stimulate the heart muscle tissue to contract
an individual has an SA node that is not functioning
a signal originates within the heart muscle tissue to contract
the size of the heart is genetically determined based on the myocyte gene
Which structure of arteries maintains the high pressure of blood?
Narrow lumen
Valves
Fenestration walls
Thin walls
Which feature of capillaries allows for the exchange of substances?
Thick walls
Large lumen
Valves
Fenestration walls
When the left ventricle is relaxed, what is the state of the valves?
A
B
C
D
What is a property of arteries?
A. Arteries have elastic walls.
B. Arteries have valves.
C. All arteries carry oxygenated blood.
D. Arteries receive blood from the atria.
When intense physical activity is anticipated, which factor in the blood will increase the frequency of sinoatrial signals to heart muscle?
A. pH
B. Oxygen level
C. Thyroxin
D. Epinephrine
What is the position of heart valves when blood pressure is highest in the aorta?
A
B
C
D
In which blood vessel connected to the heart does blood have the lowest carbon dioxide concentration?
A. Pulmonary vein
B. Vena cava
C. Pulmonary artery
D. Coronary vein
What blood flow does the right semilunar valve prevent?
A. Backflow of blood to the right atrium during ventricular contraction
B. Blood flowing from the aorta back into the heart when the ventricle is filling
C. Blood flowing from the pulmonary artery to the right ventricle when the heart is relaxing
D. Blood flowing from the right atrium to the vena cava when the right atrium contracts
What feature of arteries is most important in maintaining sufficiently high blood pressure?
A. A wide lumen
B. Elastic fibres in the wall
C. Valves at intervals
D. A thin wall
After a red blood cell picks up oxygen in the lungs, which sequence shows the path it could take when passing through the heart during its circuit of the body?
A. I → II → III → IV
B. II → I → IV → III
C. IV → III → I → II
D. IV → III → II → I
Which is a valid comparison between arteries and veins?
A
B
C
D
Which is an explanation of the processes happening?
A. During phase I, pressure in the left ventricle decreases while it increases in the aorta during contraction of the left atrium.
B. In phase II, pressure rises in the aorta because the left ventricle is contracting.
C. In phase III, pressure decreases in the aorta because the left atrium is relaxing.
D. In phase III, there is a constant increase of pressure in the aorta as both left atrium and ventricle are at rest.
Which shows the sequence of blood flow in the heart?
A. III IV I
B. IV III II
C. VII VIII I
D. VIII VII VI
What is an advantage of capillary walls being one cell thick in the systemic circulation?
A. To allow carbon dioxide to diffuse into tissues
B. To allow oxygen to diffuse out of tissues
C. To allow glucose to diffuse into tissues
D. To allow urea to diffuse into tissues
Which diagram represents blood flow through the mammalian heart?
A
B
C
D
Which is correct about structures 2 and 6?
structure 2 brings blood to the heart and 6 is the right ventricle
structure 2 carries blood away the heart and 6 is the left ventricle
structure 2 brings blood to the heart and 6 is the left ventricle
structure 2 brings blood to the heart and 6 is the left atrium
What is the meaning of coronary heart disease (CHD)?
A disease of the damage septum in heart
A disease when you eat a lot of unhealthy food
A disease when your coronary arteries become narrower because the plaque buildup
A disease when you become lazy to do exercise
In coronary heart disease, what is it that builds up in the arteries?
Fatty acids
Fat
Fatty deposits
Cholesterol
Which blood vessel are affected in coronary heart disease?
Vena cava
Aorta
Coronary arteries
Coronary veins
These are the risk factors for coronary heart disease EXCEPT
Name the substance that causes the conversion of fibrinogen to fibrin.
Clotting factors
Prothrombin
Thrombin
Enzymes
