Author Shirley Tay B.Ec., PGDE (Pri) Project Editor Gan Yi Shen Hello! Thank you for choosing this book! You can now use NUADU along with it. NUADU is an online assessment and analytics service that allows you to work on assignments online, helps track your progress and provides unlimited practice on the assessments of your choice. Access code Claim your NUADU access in 4 simple steps: For new users: 1. Go to www.system.nuadu.com/signup or scan the QR code below: 2. At Sign up, enter a valid e-mail address and create a password. 3. Choose your country. 4. Click Redeem Code and enter your access code when prompted. For existing users: 1. Go to www.system.nuadu.com/login . 2. Log in to your account. 3. Click Access Code and enter your access code when prompted. Have fun learning with NUADU!
Transcript
AuthorShirley TayB.Ec., PGDE (Pri)
Project EditorGan Yi Shen
Hello! Thank you for choosing this book! You can now use NUADU along with it. NUADU is an online assessment and analytics service that allows you to work on assignments online, helps track your progress and provides unlimited practice on the assessments of your choice.
Access code
Claim your NUADU access in 4 simple steps:
For new users:1. Go to www.system.nuadu.com/signup or scan the QR code below:
2. At Sign up, enter a valid e-mail address and create a password. 3. Choose your country.4. Click Redeem Code and enter your access code when prompted.
For existing users:1. Go to www.system.nuadu.com/login.2. Log in to your account.3. Click Access Code and enter your access code when prompted.
ALL RIGHTS RESERVEDAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publishers.
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|Conquer| Science MCQs! Primary Level Upper Block 5/6 serves to ground Primary 5 and 6 students in fundamental science concepts through a series of commonly-tested questions. 60 Worksheets, 600 Multiple-Choice QuestionsThese questions encourage students to think about what they have learned in class, analyze scientific concepts taught to them and apply this knowledge creatively to solve higher-order thinking questions.
Arranged by Topic for Focussed LearningEvery worksheet tests on a specific topic, enabling focussed learning and reinforcement of important concepts and application.
Learning and Revision Made EasyAn interesting feature is the placement of the answers next to the questions. The gatefolds on the covers can be used to conceal the answer columns. Students can focus first on working through the questions on their own before checking the answers. The guided answers with explanations provide an immediate recap, learning and feedback on the science concepts tested.
Structured questions that test on process thinking skills are available to develop science process skills essential for the practice of science.
www.nuadu.comDo the Diagnostic Tests on NUADU! Improve your results with unlimited practice and instant, real-time feedback on similar topics. Track your progress and complete assignments on your computer, tablet or smartphone. Get started now!
Air and The Respiratory System•Knowthatairismadeupofmanygases:nitrogen,oxygen,carbondioxide,watervapourandothergases• Identifyanddescribethefunctionsoftheorgansintherespiratorysystem
The Circulatory System• Identifyanddescribethefunctionsoftheorgansinthecirculatorysystem•Comparehowplants,fish,mammalsandmantakeinoxygenandgiveoutcarbondioxide•Comparehownutrients,waterandoxygenaretransportedwithinplantsandhumans•Understandhowthedifferentsystemsintegratetogethertocarryoutlifeprocesses
The Unit of Life•Understandthatthecellisthebasicunitoflife• Identifythepartsofaplantcellandananimalcellandrelatethepartstothefunctions•Compareaplantcellandananimalcell
Using Electricity•Knowthevariablesthataffecttheelectriccurrentinacircuit: -numberofbatteriesarrangedinseries -numberofbulbsarrangedinseriesandparallel•Knowtheimportanceofusingelectricitysafelyandconservingelectricity
Reproduction in Plants•Understandthatthepurposeofreproductionistoensurethecontinuityoftheorganism’sownkind•Knowtheprocessesinthesexualreproductionoffloweringplants•Comparethedifferentwaysinwhichplantsreproduce•Knowthatplantspassontheircharacteristicstotheiryoung
Reproduction in Humans•Knowtheprocessoffertilisationinhumansexualreproduction•Knowthesimilaritiesbetweenthesexualreproductionoffloweringplantsandhumans
Water and Changes of State•Understandthatwaterexistsinthreestatesthatareinterchangeable•Comparewaterinitsthreestatesandunderstandhowwaterchangesfromonestatetoanother•Recognisefactorsaffectingtherateofevaporationandprovideexplanations•Understandthetermsmeltingpointofice(orfreezingpointofwater)andboilingpointofwater
Forms and Uses of Energy• Investigateenergyconversionfromoneformtoanotherandtointerpretfindings•Recogniseandgiveexamplesofvariousformsofenergy:kineticenergy,potentialenergy,lightenergy,electrical
Sources of Energy•Recognisethatenergyisneededtomakethingsworkormove•Statethatlivingthingsneedenergytocarryoutlifeprocesses• Knowthatthesunisourprimarysourceofheatandlightenergyandrecognisethatenergyfrommostofourenergy
Energy in Food•Understandthatfoodproducedbyplantsbecomesthesourceofenergyforanimalsandman• Identifythedifferencesinwhichplantsandanimalsobtaintheirfood•Understandthatwater,lightenergyandcarbondioxidearerequiredforphotosynthesistotakeplace
Adaptations for Survival•Describetheeffectsonorganismswhentheenvironmentbecomesunfavourable•Understandthatadaptations,structuralorbehaviouralenhancethesurvivaloftheorganism
1. Which of the following statements about the function of the water-carrying tubes in plants is correct?
(1) They keep the plant upright. (2) They help the plant to make food. (3) They transport food made by the leaves to the
rest of the plant. (4) They transport water and dissolved mineral salts
from the roots to the rest of the plant. ( )
2. The diagram below shows how both A and B are transported in a plant.
roots leavesstems
A
B
A
B
What could be represented by A and B?
A B(1) water mineral salts(2) starch water (3) mineral salts starch (4) mineral salts water ( )
Worksheet1
1. (4) The function of the water-carrying tubes (xylem) is to transport water and dissolved mineral salts from the roots to all parts of the plant. The stem of the plant keeps it upright. The leaves make food for the plant during photosynthesis. The food-carrying tubes (phloem) transport food from the leaves to the rest of the plant.
2. (2) A represents starch made by the leaves which is transported by the food-carrying tubes (phloem) in the stem from the leaves to all parts of the plant. B represents water and mineral salts which are absorbed by the roots and transported to all parts of the plant via the water-carrying tubes (xylem) in the stem.
GUIDED ANSWERS
For each of the following questions, choose the correct option and write its number (1, 2, 3 or 4) in the brackets.
GUIDED ANSWERSGUIDED ANSWERS 3. The diagram below shows a cross-section of a stem.
P
Q
What substances are transported by parts P and Q respectively?
P Q
(1) food and oxygen water only
(2) mineral salts only
food and carbon dioxide
(3) water and mineral salts food only
(4) food only water and mineral salts ( )
4. Diameters of different thickness are cut and removed from the stem of a plant shown below.
A
BC
D
Food-carrying tube is removed.
Both water-carrying and food-carrying tubes are removed.
Identify the leaves which are still able to make their own food.
(1) A only (3) B and C only (2) A and D only (4) None of them ( )
Worksheet1
3. (3) Part P represents the water-carrying tubes (xylem) while part Q represents the food-carrying tubes (phloem) . The water-carrying tubes (xylem) transport both water and mineral salts from the roots to all parts of the plant while the food-carrying tubes (phloem) carry food made by the leaves to all parts of the plant. There is no transportation of gases in plants. The exchange of gases only takes place in the leaves.
4. (2)Leaves A and D can continue making food as they are still able to receive water and mineral salts transported by the water-carrying tubes (xylem). On the other hand, leaves B and C are not able to make any food as they do not receive any water and mineral salts, since both the water-carrying and food-carrying tubes have been removed.
5. The diagram below shows how starch and water are transported in a plant.
S T
flowers
U starch:
water:
Which one of the following show the parts of the plants correctly?
S T U(1) stem roots leaves (2) stem leaves roots (3) leaves roots stem (4) leaves stem roots ( )
6. Keith puts a plant with white flowers in a container filled with blue liquid for a few hours. After a day, he observes that the white flowers have turned slightly blue. What has caused the flowers to change their colours?
(1) The flowering plant has been affected by a fungal disease.
(2) The pigment found in the leaves of the flowering plant has turned the flowers blue.
(3) The roots absorb the blue liquid which is then transported to the flowers by the stem.
(4) The roots of the flowering plant have taken in the blue liquid and transported it to the flowers.
( )
7. Which of the following is/are the correct function(s) of the trunk of a rain tree?
A. It keeps the plant upright. B. It transports water and mineral salts to all parts of
the plant. C. It transports food from the leaves to all parts of
the plant. D. It twines round a support to help the plant reach
for more sunlight.
(1) B only (2) A and B only (3) A, B and C only (4) A, C and D only ( )
5. (4) The roots (U) will take in water and the stem (T) will help to transport it to all parts of the plant. The leaves (S) will make food and the stem (T) will carry the food to all parts of the plant.
6. (3) The blue liquid which is absorbed by the roots is transported to all parts of the plant, including its flowers, by the water-carrying tubes (xylem) in the stem. It is not the function of the roots to transport the blue liquid to the flowers directly. The pigment found in the leaves (chlorophyll) is only needed to trap sunlight for the plant to make food.
7. (3) The functions of a tree trunk like the rain tree are to transport food made by the leaves, and water and mineral salts absorbed by the roots to all parts of the plant. The tree trunk is also able to keep the rain tree upright. It does not need to twine itself round a support in order to get more sunlight.
GUIDED ANSWERS 8. The diagram below shows the cross-section of a stem which had been placed in a beaker filled with red-coloured water for a day.
Y
ZW
X
Which part, W, X, Y or Z of the stem, would be stained red by the coloured water?
(1) W (2) X (3) Y (4) Z ( )
Study the experiment below carefully. Then answer questions 9 and 10.
plant
layer of oil(50 cm3)
water (380 cm3)
container A container B
The same amount of water was poured into two identical containers. Container B was set up as a control. Both containers were left on the table near the window for two days.
9. What would most likely be observed after two days?
(1) The water levels in both containers decreased. (2) The water level in container A decreased but the
water level in container B increased. (3) The water level in container A increased but the
water level in container B decreased. (4) The water level in container A decreased but the
water level in container B remained unchanged. ( )
10. What was the possible reason for putting the layer of oil in both containers?
(1) To provide nutrients for the plant (2) To prevent mosquitoes from laying eggs in the water (3) To prevent the water in both containers from
evaporating (4) To prevent the water from mixing with the
surrounding air ( )
Worksheet1
8. (2) X is the water-carrying tube (xylem) in the stem which carries the water from the roots to all parts of the plant. Hence, it will be stained red by the coloured water.
9. (4) The water level in container A decreased because the roots of the plant had taken in some of the water. The water level in container B remained unchanged. The layer of oil prevented the evaporation of water.
10. (3) Evaporation cannot take place in either of the two containers when a layer of oil covers the surface of the water. Therefore, any decrease in the level of water would be due to the absorption of water by the plant through its roots.
