NEW
Font size
WorksheetsTRANSPORT in animals & plants
Total questions: 15
Worksheet time: 24mins
Which of these correctly describes the event that occurs during ventricular systole.
The pressure in the ventricle increases
The pressure in the aorta increases.
The bicuspid valve opens up.
The volume of the ventricle increases
Cardiac muscles are myogenic because
It requires impulse from the parasymphathetic nerve to increase the heart rate
It requires impulse from the sympathetic nerve to decreases the heart rate
It does not require impulse from the central nervous system to start contracting
Its muscles are branched and connected by intercalated discs.
The graph below shows changes in pressure of left atrium, left ventricle and aorta. At which position do the semi lunar valves of the heart open and close?
Open - I / Close - II
Open - I / Close - IV
Open - II / Close - III
Open - III / Close - IV
Rate of heartbeat increases when
Stimulated by sympathetic nerves
Stimulated by parasympathetic nerves
Decrease in adrenaline concentration
Decrease in blood pressure
Translocation may occur due to mass flow. The pressure in the hypothesis comes from
Root pressure
Transpiration at leaf
Capillary action of xylem at stem
Diffusion of water into sieve tubes at leaves
Which of the following are true about endodermal cell?
I It has the casparian strip on its radial wall and transverse wall
II It allows water to diffuse through its wall and cytoplasm
III It allows water to move across its cytoplasm
IV It helps in producing the root pressure
I and IV
II and III
I, III and IV
II and IV
The rhythm of heartbeat is started by
The blood pressure
Sinoatrial node
Sympathetic nervous system
Secretion from adrenal gland
The following structures are found in the heart:
I Bundle of His
II Purkinje tissue
III Atrioventricular node
IV Sinoatrial node
Which of the following shows the correct sequence for impulse conduction in the heart?
III, IV, I, II
IV, III, I, II
III, IV, II, I
IV, III, II, I
The structures below play a role in translocation in plants except?
I Stomata
II Sieve plates
III Mitochondria
IV Casparian strip
I and III
I and IV
II and III
II and IV
Which of the following initiates depolarization waves of the heart?
septum
Purkinje fibers
Sinoatrial node
Atrioventricular node
Which statement is not true about the pressure flow hypothesis?
The flow of sugar in phloem requires ATP
Water re-enters the source from xylem via osmosis
The unloading of sugar reduces hydrostatic pressure
The loading of sugar into sieve tubes takes place against the concentration gradient
The pathways of water and dissolved minerals in root cells are shown in the diagram below. Which statements are true about pathways X and Y?
I Water and minerals pass through the cell walls in pathway X
II Water and minerals pass through the endodermis cell wall before entering xylem vessel for pathway X
III Water and minerals are transported from the cell wall of the cells to the cytoplasm for pathway Y
IV Water and minerals pass through cytoplasm of one cell to another cell via plasmodesmata in pathway Y.
I and II
I and IV
II and III
II and III
Which of the following statements is true regarding the lymphatic system?
It destroys the immunological defence in body.
It transports interstitial fluids back to the blood.
It transports plasma cells to the site of infection in the body.
It filters the antigen that enters the body from respiratory system.
The graph shows the changes that take place in the volume of the left ventricle during one cardiac cycle. Which two points on the graph represent the beginning and end of diastole?
Beginning - 1 End - 2
Beginning - 1 End - 3
Beginning - 3 End - 4
Beginning - 4 End - 5
Which of these correctly describes the structure and function of xylem vessels?
cells that have lost their end walls and are used to transport metabolic products from a low water potential to a high water potential
cells with perforated end walls that transport minerals within herbaceous dicotyledonous stems
dead cells that are connected to one another through pits and through which sucrose moves as a result of mass flow
dead hollow tubes which move water up as a result of low water potential caused by transpiration
