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WorksheetsTransport System (Tutorial)
Total questions: 10
Worksheet time: 8mins
The heart sound ‘dup’ which can be heard represents
the flow of blood into the heart.
the flow of blood from the atrium
into the ventricles.
the closure of the
atrioventricular valves.
closure of the semilunar valves.
Which structures of the human heart receives impulses directly from the sympathetic and parasympathetic system?
Sinoatrial node
Atrioventricular node
Bundle of His
Purkinje tissue
Which of the following structures is considered to be the pacemaker of the heart?
Bundle of His
Sinoatrial node
Atrioventricular node
Purkinje fibers
When impulse are conducted through the heart, transmission is delayed at the ____ so that the ___________ may contract before the_____________.
sinoatrial node, atrium, ventricles.
sinoatrial node, ventricles,
atrium.
atrioventricular node, atrium, ventricles.
atrioventricular node,
ventricles, atrium.
The impulse that signals each heartbeat is conducted along which path?
1. Atrioventricular node
2. Bundle branches
3. Sinoatrial node
4. Atrioventricular bundle
1, 2, 3, 4
1,3, 4, 2
3,1, 4, 2
4, 1, 2, 3
During ventricular systole
blood flows from the ventricles
to the pulmonary arteries.
the ventricles relax.
the atrium contract.
the tricuspid and mitral valves are opened.
Which of the following functions as a source during translocation in plants?
Merismetic tissue in the shoot
Leaves
Roots
Fruits and flowers
Transpiration in plants
requires all of the following EXCEPT
adhesion of water molecules to cellulose.
cohesion between water molecules.
evaporation of water molecules.
active transport through xylem cells.
Sugar moves from leaves into the ___________of ___________ by__________ .
sieves-tube members; phloem; active transport
sieves-tube
members; xylem; active transport
sieves-tube
members; phloem; diffusion
tracheids; phloem; active transport
According to the pressure-flow hypothesis:
water moves from an area of positive water potential to an area of negative water potential.
the evaporative pull of transpiration produces tension at the top of the plant.
the flow of sugar is driven by a hydrostatic pressure gradient produced by water entering the phloem.
pressure is created by
the movement of water into the roots from the soil.
