Blood Circulation and Transport Module[1]

FORM 3 : SCIENCE MODULE

Chapter 2: . Blood Circulation and Transport 2.1 Understanding the transport system in human

1. Label the diagram of the heart by using the words given below.

Left ventricle Right ventricle Left atrium Right atrium Pulmonary vein AortaTricuspid valve Pulmonary artery Vena cava Semilunar valves Bicuspid valve

2. Three types of valve in the heart.

Type of valve FunctionTricuspid

Bicuspid

Semilunar

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3. Blood vessels are tube in the body that channel blood. Four blood vessels are connected to the heart.

Type of blood vessel FunctionVena cava

Pulmonary artery

Pulmonary vein

Aorta

4. Complete the table below to shows the comparison between the atriums and the ventricle.

Atriums Characteristics VentriclesFunction

Wall

Space

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1. Complete the flow chart below to show how blood circulates from the vena cava through the heart, to all parts of the body.

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Lungs

All parts of the body

Key:

Blood vessel valve Heart chamber


2 a) Compare the blood vessel in the human body

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Existence

of valve

Blood capillary Artery Vein

Structure

Function

Type of blood carried

Rate of blood flow

Thickness of wall

Lumen size

Blood pressure


2 b) Name the type of blood vessel J,K and L and type of blood M and N in the following diagram.

3 Figure below shows the blood circulation.

a) Label the blood circulation T and U in the diagram.

b) Name the blood vessel

i) P :

ii) Q :

iii) R :

iv) S :

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4. Comparison between oxygenated blood and deoxygenated blood

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Oxygenated blood Deoxygenated blood

Difference

Oxygen

Carbon dioxide

The concentration

of digested food (like

glucose and amino acid)

Waste products

Blood vessel that carries it

Deoxygenated blood has to be carried to the lungs to change it into oxygenated blood


2.2 HUMAN BLOOD

1. Human blood consists of two components:

(a) plasma (55%)

(b) blood cells (45%)

2. Write the functions of blood in the following diagram.

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Plasma

(55%)

Blood cell

(455%)

Nutrient

Hormones

Heat

Inorganic ions

Dissolved gases

Waste products

Red blood cells (Erythrocytes)

White blood cell (Leucocytes)

Platelets (Thrombocytes)

FUNCTIONS

OF BLOOD


3. Comparing red blood cells, white blood cells abd platelets

Characteristics Red blood cells White blood cell Platelets

Diagram

Shape No fixed shape

Function Help blood clot

Presence of nucleus

Place of production

Presence of heamoglobin

Presence of cytoplasm

Life span

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4. Complate the chart below

5. If the donor’s blood and the recipient’s blood are not compatible, what will happen to the blood and what are the effects?

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Blood group Can donate blood to Can receive blood from

A

B

AB

O

1

3

AB

6

2

4

5

O

Donor’s blood Recipient’s blood

Are not compatible

What will happen to the blood?

.............................. may take place

Cause

Can be ...........................................


2.3 Transport system in plantsa. Complete the following chart.

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TRANSPORT SYSTEM IN PLANT

Stomata

Transpiration

_______________________________________________________________________________

Xylem Phloem

The importance

Affecting factors

1.2.3.4.

Part Monocotyledon plant Dicotyledon plant

Function


ACTIVITY 1The apparatus in figure 1 was used in a science activity.

FIGURE 1

The following steps were carried out:Step 1 : Two similar hibiscus plants, about 25 cm tall, were selected.Step 2 : The plants were pulled out of the soil and the roots were washed to remove any

remaining soil.Step 3 : The plants were trimmed until ten leaves were left on each plant.Step 4 : Each plant was placed in a measuring jug filled with water, and labelled F and G, as

shown in the figure above.Step 5 : 10 ml of cooking oil was poured into each jug.Step 6 : A layer of grease was applied to the leaves in G.Step 7 : The plants were placed in the Sun for three hours. The initial and final water levels in

both jugs were recorded in the table below.

Plant F Plant GInitial water level 75 ml 75mlFinal water level 68 ml 75 ml

(a) Suggest a hypothesis for this experiment.

(b) What are the three variables that are kept constant in this experiment?

(c) Name the variable that(i) is manipulated :

(ii) responds :

(d) Name two processes in plants that require the uptake of water from the roots.

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(e) What conclusion can you draw from this experiment?

(f) How is water transported in plants?

(g) Describe the direction in which water is transported in plant

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STRUCTURE QUESTIONS

1 Figure 4(a) shows two similar healthy plants in two different pots of the same amount of soil and nutrients. The bark of one of the plants is removed, leaving a cut ring. Figure 4(b) shows the cut ring at the initial stage.

Figure 4(a) Figure 4(b)

(a) Draw a diagram to show the final result of the experiment. Indicate the results on the diagram clearly.

(b) What is the hypothesis of this experiment?

(c) Name the variables stated below:

i. constant variable:

ii. manipulated variable:

iii. responding variable:

(d) State the inference for the observation.

(e) Make a conclusion for this experiment.

(f) Predict the condition of the plant when left uncared for two months.

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2 Figure 5 shows the apparatus set up for an experiment

Figure 5

The experiment is set up with the following steps.1. Set up the apparatus as shown in diagram 3 (a)2. Weigh the apparatus and record its weight3. Leave the apparatus on a table in a bright room.4. Repeat step 1 but place the apparatus in a cupboard as shown in diagram 6 (b) in the same room.5. The weights of the plants and the apparatus are taken hourly.

The results of the experiment are shown in table 1

Time of the dayWeight of the plant and apparatus on a

table in a bright room

Weight of the plant and apparatus place in a

cupboard

10 am 600 g 600 g11 am 590 g 595 g12 pm 580 g 590 g1 pm 570 g 585 g2 pm 560 g 580 g

Table 1

a) What is the objective of the experiment?

__________________________________________________________

b) State the variables in the experiment

i. Manipulated variable : ______________________________

ii. Responding variable : ______________________________

iii. Constant variable : ______________________________

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(b)


c) Based on the result, draw a bar chart to show the weight of the apparatus under different conditions.

d) Calculate the rate of transpiration based on the result found in Table 1 What conclusion can be made from this experiment?

_____________________________________________________________________

f) State one hypothesis from the experiment.

_____________________________________________________________________

_____________________________________________________________________ g) List two other factors which control the rate of transpiration.

i. ________________________________________

ii. ________________________________________

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Blood Circulation and Transport Module[1]

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