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WorksheetsTRANSPORT SYSTEM
Total questions: 20
Worksheet time: 10mins
Choose the correct order of the chambers through which deoxygenated blood flows in the human heart.
right atrium-----> right ventricle------> aorta
right atrium -----> right ventricle------> pulmonary artery
left atrium------> left ventricle------> aorta
left atrium-------> left ventricle-------> pulmonary artery
Lymp nodes are widely distributed throughout the body along the lymphatic veins where they filter the _____________before it is returned to the ________________.
lymph, blood
lymph, heart
blood, lymph
blood, heart
Movement of water up a plant through the xylem vessels is due to?
I Transipration-cohesion-tension mechanism
II Root pressure
III Presure flow
I only
I and II only
II and III only
I, II and III
Which of the following is NOT true?
The lymphatic system is an open circulatory system
The lymphatic system contains one-way valves
The lymphatic system returns fluid to the bloodstream
The lymphatic organs are kidney, heart, spleen and lung
Which structures of the human heart receives impulses directly from the sympathetic and parasympathetic system?
Sinoatrial node
Atrioventricular node
Bundle of His
Purkinje tissue
The basic transpiration-cohesion-tension mechanism involves..
The entrance of water and ion actively through cell membrane of the root epidermis.
Water flows in, generating positive pressure
The formation of weak bonds between water molecules and between water molecules and vessel walls.
The movement of water into root tissue through stem xylem and leaf xylem, then to the atmosphere
The loading of sucrose into sieve tubes is by ________ transport and consequently, requires ___________.
Active; ATP
Passive; energy
Active; ions
Passive;ions
Which of the following functions as a source during translocation in plants?
Merismetic tissue in the root
Leaves
Roots
Fruits and flowers
Which of the following is true concerning the function of lymphatic system?
I. Transport fatty acids
II. Transport cholestrol
III. Transport enzymes and hormones
I only
I and II only
II and III only
I,II and III
Which of the following are lymphoid organs?
I.Tonsil
II. Spleen
III. Bone marrow
I only
I and II only
II and III only
I,II and III
Root pressure which plays a small role in xylem flow is caused by
transpiration of water out of the xylem.
cohesion of water molecules to one another
adhesion of water molecules to walls of the xylem
osmotic flow of water into the xylem
Xylem transports water and dissolved minerals in which direction?
Upward
Inward laterally
Downward
Outward laterally
In the pressure flow hypothesis of translocation, what causes the pressure?
Root pressure
The osmotic uptake of water by sieve tubes at the source
The accumulation of minerals and water by the stele in the root
The osmotic uptake of water by the sieve tubes of the sink
Which of the following structures is considered to be the pacemaker of the heart?
AV node
AV bundle
SA node
Purkinje fibers
What is the function of valves in heart?
To prevent the backflow of blood in the chambers.
To allow the backflow of blood in the heart.
To initiate the flow of the blood in the heart.
Where does Atrioventricular Valves (AV valves) are located?
In between atria and ventricle chambers.
In the area where pulmonary artery leaves the right ventricle.
In the area where aorta leaves the left ventricle.
In between left and right ventricles.
When impulses are conducted through the heart, transmission is delayed at the _____________ so that the ____________ may fully contract before the ___________ contract.
Sinoatrial node, atria, ventricles
Sinoatrial node, ventricles, atria
Atrioventricular node, atria, ventricles
Atrioventricular node, ventricles, atria
Which statement in NOT TRUE of the lymphatic system?
Lymphatic vessels are closed at one end.
Lymph has fewer plasma protein molecules than the blood plasma
The thoracic duct carries the lymph to the right subclavian vein
Returning fluid filtered out from the capillaries to the blood circulatory system
The theory which states that transpiration pull is responsible for carrying water upward through the xylem is called
cortex-xylem theory
cohesion-pressure theory
cohesion-tension theory
pressure-tension theory
Sugar is loaded into the phloem from a source or an area of ______________ to a sink or an area of ______________
Low sucrose concentration, high sucrose concentration
High sucrose concentration, low sucrose concentration
Positive water potential, negative water potential
Negative water potential, positive water potential
