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P5/6 science

Plant Systems

SAPSCSP5&6_W15Page 1/8

Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6

1. The graph below shows the pulse rate of Queenie over half a day. Her pulse rate at rest is about 68beats for every minute.

Pulse rate (beats/min)

Time (min)0

68W

X

Y

Z

Which one of the following correctly shows Queenie’s pulse rate according to the type of activity she is carrying out?

W X Y Z

(1) Strolling Playing basketball Watching a thriller movie Napping

(2) Napping Watching a thriller movie Playing basketball Strolling

(3) Strolling Playing basketball Watching a thriller movie

Admiring flowers in the park

(4) Admiring flowers in the park Strolling Watching a thriller

movie Playing basketball

( )

2. What is the difference between the composition of air entering the lungs and leaving the lungs?

Composition of air

Entering the lungs Leaving the lungs

(1) More carbon dioxide More oxygen

(2) More oxygen Less carbon dioxide

(3) More oxygen More carbon dioxide

(4) Less carbon dioxide More oxygen( )

3. An athlete ate a bowl of cereal before he began his daily training at the stadium. Which two bodysystems enable him to have the energy to do his training?(1) muscular and skeletal systems(2) digestive and circulatory systems(3) circulatory and respiratory systems(4) digestive and respiratory systems ( )


P5/6 science

Plant Systems


Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6

4. Which system works together with the circulatory system to ensure that the digested food is wellcirculated around the body?(1) digestive system(2) respiratory system(3) muscular system(4) skeletal system ( )

Answers: 1. 2 2. 3 3. 2 4. 1


P5/6 science

The Circulatory System


Taken from ScieNce ProceSS SkillS UPPer Block 5/6

1. The graph below shows Mr Dawson’s pulse rate over a period of one hour.

(a) What is Mr Dawson’s pulse rate when he is at rest? [1m]

(b) For how long was Mr Dawson running at a maximum speed of 20 km/h? [1m]

(c) Mr Dawson stopped running at point A. Why didn’t his pulse rate decrease immediately? [2m]

(d) Why does one’s pulse rate increase during exercise? [1m]

010 20 30 40 50 60

20

40

60

80

100

Time/min

Pulse rate (beats per min)

A


P5/6 science




2. (a) What is the function of the heart? [2m]

(b) Baby Danny was born with a tiny hole in his heart. He needed emergency surgery to close upthe hole. Why couldn’t Danny survive with the hole in his heart? [3m]

hole in the heart

Answers: 1. (a) It is 70 beats per minute. 1. (b) He was running for 20 minutes. 1. (c) His body needed time to cool down, during which his heartbeat slowed down gradually to its rate at rest. 1. (d) This is to supply the body with more oxygen and energy and remove carbon dioxide at a faster rate. 2. (a) The heart pumps blood to the lungs and all parts of the body to enable blood to circulate through the blood vessels all around the body. 2. (b) With the hole, oxygenated blood in the left hand side of the heart would mix with deoxygenated blood in the right hand side of the heart. As a result, the blood flowing to all parts of the body through the arteries would not have sufficient oxygen for Danny to survive well.


P5/6 science




1. Study the words below.

xylem artery phloem vein capillary

(a) What do the words in the box have in common? [1m]

(b) In the table below, classify the above list of words into two separate groups. [1m]

Group A Group B

(c) How have you classified the list of words? [1m]

2. State a similarity and a difference between the circulatory systems of a human and a plant. [2m]

Similarity:

Difference:


P5/6 science


Answers: 1. (a) They are all types of tubes which transport substances in living organisms. 1. (b) Group A: xylem; phloem Group B: artery; capillary; vein 1. (c) I have classified them according to whether they are parts of a plant or a human. 2. Similarity : Both transport substances around the organism. Difference : The human circulatory system transports blood through blood vessels while the plant transport system transport water and mineral salts through its xylem tubes and food through its phloem tubes. 3. Function 1: It transports oxygen, food and nutrients dissolved in the blood to all parts of the body which need them. Function 2: It removes carbon dioxide and waste products dissolved in the blood from the parts of the body which produce them to the excretory organs for removal from the body. 4. (a) carries deoxygenated blood from the heart to the lungs 4. (b) carries deoxygenated blood from the rest of the body back to the heart 4. (c) carries oxygenated blood from the lungs to the heart 4. (d) carries oxygenated blood from the heart to all parts of the body


3. What are the two main functions carried out by the human circulatory system? [2m]

Function 1:

Function 2:

4. Fill in each box with the correct function of the indicated blood vessel. [4m]

all parts of the body

(a)

(b)

(c)

(d)

lungs



P5/6 science

Cells


Taken from ScieNce PartNer: a complete Guide to Upper Block Science

The adult human body is estimated to be made up of 10 trillion cells, depending on the size of the person and also the number of cells present in his body (as cells are constantly changing: they die, are destroyed or are produced).

Different types of cells have different appearances and perform different functions.

Fat cells, muscle cells, skin cells, white blood cells, red blood cells and brain cells are just a few of the different types of cells found in our body.

fat cell muscle cell white blood cell red blood cells brain cells

The largest human cell is the egg cell which is produced by the female. The size of the egg cell is only about a diameter of a strand of human hair .The smallest cell is the male sperm. It is only one-tenth of a diameter of a strand of human hair!

Dead Cells

Although we are living, some of our body parts are made up of dead cells.

In humans, our hair, skin and nails are made up of dead cells.

Cells in other parts of our body may die from time to time. However, new cells will be formed to take their place.

In animals, feathers, scales and claws are made up of dead cells.

In plants, the tree’s bark, woody trunk and branches are made up of dead phloem cells.

Cells — Seeing The Big Picture

Cells In A HumanWhen the cells of the same kind are packed tightly together, they combine to form tissues. Our skin and muscles are tissues.

When several tissues combine together, they form an organ. A group of muscle cells combine to form a muscle tissue. A group of muscle tissues combine to form an organ like the heart.

All our organs in our body cooperate with one another to keep us alive.

Cells In A PlantIt is the same thing for plants. They have cells too. The cells are different from one another in terms of shape, size and function.

Some cells make up the water-carrying tubes found in the stem of a plant. Water is absorbed by the plant through its roots and transported to the other parts of the plant through these tubes. Another name for the water-carrying tube is xylem.


P5/6 science

There are also cells that make up the food-carrying tubes which are also found in the stem of the plant. These tubes transport food made by the leaves during photosynthesis to all parts of the plant. Another name for the food-carrying tube is phloem.

Cells are also found in the leaves of a plant. These cells are special because they are able to make food during photosynthesis for the plant. The cells contain a green pigment (chlorophyll) in them.

In addition, there are pores on the surfaces of leaves which help the plant to take in gases and give out gases. They are called stomata. Each stoma is surrounded by two special epidermal cells called the guard cells. These special cells respond to the environmental conditions by opening and closing the pores.

A microscopic view of two stomata

Understanding Animal Cells And Plant Cells

stoma

guard cell

stoma closed

stoma open: gasesenter and leave

An animal cell A plant cell

cell membrane

cytoplasm

vacuole

nucleus

cell wall

chloroplast


Taken from ScieNce PartNer: a complete Guide to Upper Block Science

Cells

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Plant Systems - sapgrp.com · Each stoma is surrounded by two special epidermal cells called the : guard cells. These special cells respond to the environmental conditions by opening