JAWAHIR ALRIYADH INTERNATIONAL SCHOOL, RIYADH. THIRD TERM EXAM 2022-23 Grade: 5 Subject: Science Date: _______ Max.Marks:40 Section “A” [14 Marks] Q1- Fill in the blanks. [0.5 x 6=3] Word Bank Nectar Light meters pollination Sundial carpel luminance 1- As the insect moves from one plant to another plant of the same kind, it can drop pollen. When insect do this we call it __________________. 2- The food produced by some flowering plants is very sweet and called __________________. 3- The female part is called the _______________ , which has the stigma, style and ovary. 4- In 1920, light intensity was measured in an accurate way by using ______________ . 5- _____________ are used to measure the strength or brightnes of electric bulb. 6- ________________ is used to tell the time. Q2- Choose the correct answer. [0.5 X 10 = 5] 1- Animal such as ______________ can help to disperse seeds. a- mosquitoes b- bird c- bedbug 2-Underline the one true statement about pollination. a- Pollination is always carried by insects. b- Insects are not attracted by flowers. c- Insects like nectar. 3-Pollen is very important because it is used by the plant to make ______________. a- Flower b- seed c- leaves 4-What is the process by which plants make new plants? a- germination b- growth c- movement 5-_______________ is the sticky part of flower and receives the pollen. a- Anther b- Ovary c- Stigma 6-Which part of the plant has seed? a- Fruit b- Stem c- Roots 7-When the ______________ moves, the shadow changes its length and position a-Sun b- Earth c- Moon 8-In high level of light, the ______________ to protect the eye from too much light. a- Iris becomes larger b- iris becomes smaller c- eye lid opens wider 9- Circle the one true fact about shadows. a- Shadows do not change throughout the day. b- Shadows can only be seen at night. c- Shadows fade throughout the day. 10- Shadows are formed when an object _________________. a- Allow light to pass through b- Blocks the path of the light c- Changes its state Q3- State true or false. [0.5 X 6 = 3] 1- Insects are the only things that can pollinate a flowering plant. 2- The anther receives the pollen grains from the female part of a flower. 3- The pollen sends a tube down the style. 4-My shadow is darker and wider in the morning and evening. 5-Solar powered calculators can be used to measure the light intensity. 6- The Sun is the only natural source of light. Q4- Match the following. 1-Cross pollination 2-Self pollination 3-The modern unit of light intensity is 4-Before 18th century light was measured in 5-Your shadow is at its shortest 6-Your shadow is longer [0.5 X 6 = 3] a- in the morning and evening. b- at midday c-Pollens transfer from the male part to the female part of the same flower. d-Pollens transfer from the male part to the female part of the different flower. e- Foot candle f- Lumen or lux SECTION “B” Q5-Flowers have different parts. [20 Marks] This is an Asiatic lily flower. a- Name the part A. [1] _____________________ b- What is the function of part B. [1] ____________________________________ c- Describe the function of part C. [1] __________________________________ . d- What is pollen? [1] ____________________________________________________________ _____________________________________________________________ _____________________________________________________________ e- What is fertilization? [1] _____________________________________________________________ _____________________________________________________________. f- What happens when once the pollen and ovum join up? [1] _________________________________________________. [Total=6] Q6-Scientisits are observing bees visiting different coloured flowers. Scientisits want to know ‘Do colour and scent attract more bees?’ They chose pairs of identical flowers and added scent to one flower in each pair. They observed the bees for one hour. Here are their results. a- Which type of flower did most bees visit? [ 0.5] ___________________________________________________ b- Write a conclusion based on these results. [1] c- Which two factors did class 5 control? [1] d- The red scented flowers lasted for only a few days. Which colour of scented flower would attract most bees now? [ 0.5] White Red yellow e- How do insects and the plants help each other? Pink [1] ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ [Total=4] Q7- Class 5 is observing shadow. They record the length of the shadow every hour during the day. Here are their results. a- Use the results in the table to complete the line graph below. b- How long was the shortest shadow? [0.5] [1.5] _______________ cm. c- At what time of day was the shadow the shortest? [0.5] ________________________________________________ . d- Predict the length of the shadow after seven hours. [0.5] ________________ cm. e- In what ways does a shadow change during the day?[1.5] ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ f- Circle the thing that can make shadow change. Day of the week Distance from light source [0.5] season [Total=5] Q8- a- What is light intensity? [1] ___________________________________________________________________ ___________________________________________________________________ a- Why do scientists need to measure light intensity? [1] _____________________________________________________________ _____________________________________________________________ ____________________________________________________________ b- What is a photodiode? [1] ________________________________________________________________ ________________________________________________________________ _______________________________________________________- c- Give two example of something that uses the light meter. [1] _____________________________________________________________ _____________________________________________________________ d- These diagrams show how light travels through objects. Label diagrams A and B using words from the word bank. [1] Word bank Opaque Translucent Transparent A B [Total =5] Section “C” [6] Q9- (a) Draw the detail diagram of a flower. Use the information to complete the labels for the flower using the word bank below. Word bank Stamen Anther Style Carpel OR Stigma Filament Ovary Stem Stamen Anther Style Carpel Stigma Filament Ovary Stem (b)Write the name of each process in the correct place on the picture of the life cycle. Use the words in the word bank. One has been done for you. [2] Word bank Pollination Germination Fertilisation Seed dispersal Seed production D
