Demonstrating Osmosis practice exercise 3

Course: Grade 8 Integrated Science - Movement of Materials in and out of the cell - Demonstrating Diffusion and Osmosis

Quiz Questions (32 questions)

Question 1
 A bean plant left in the sun without water appears droopy. After watering, it becomes upright again. What process helped this change and how does it affect the plant’s cells?   (2 marks)
Question 2
 A bean plant left in the sun without water appears droopy. After watering, it becomes upright again. What process helped this change and how does it affect the plant’s cells?   (2 marks)
Question 3
A farmer irrigates crops with salty water. After a few days, the leaves appear dry even though the soil is moist. What process is affecting the plant cells and what is the result?  (2 marks)
Question 4
A farmer irrigates crops with salty water. After a few days, the leaves appear dry even though the soil is moist. What process is affecting the plant cells and what is the result?  (2 marks)
Question 5
A farmer irrigates crops with salty water. After a few days, the leaves appear dry even though the soil is moist. What process is affecting the plant cells and what is the result?  (2 marks)
Question 6
A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)
Question 7
A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)
Question 8
A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)
Question 9
A visking tube filled with salt solution is placed in a beaker of pure water as shown below. After some time, the level of solution inside the tube rises. What process is responsible for this and how does it demonstrate osmosis in living things?   (2 marks)
Question 10
An image shows two mango slices: one placed in distilled water and the other in sugar solution. Predict what happens to each slice after 4 hours and explain how osmosis is involved.   (4 marks)
Question 11
An image shows two mango slices: one placed in distilled water and the other in sugar solution. Predict what happens to each slice after 4 hours and explain how osmosis is involved.   (4 marks)
Question 12
An image shows two mango slices: one placed in distilled water and the other in sugar solution. Predict what happens to each slice after 4 hours and explain how osmosis is involved.   (4 marks)
Question 13
An image shows two mango slices: one placed in distilled water and the other in sugar solution. Predict what happens to each slice after 4 hours and explain how osmosis is involved.   (4 marks)
Question 14
Study the image showing sukuma wiki leaves placed in fresh water and in salty water. After a few hours, one leaf is crisp while the other is limp. Identify which leaf was in which solution and explain using osmosis.  (2 marks)
Question 15
Study the image showing sukuma wiki leaves placed in fresh water and in salty water. After a few hours, one leaf is crisp while the other is limp. Identify which leaf was in which solution and explain using osmosis.  (2 marks)
Question 16
Study the image showing sukuma wiki leaves placed in fresh water and in salty water. After a few hours, one leaf is crisp while the other is limp. Identify which leaf was in which solution and explain using osmosis.  (2 marks)
Question 17
 A grape is placed in plain water . After a while, it swells and becomes firm. Study the images below and explain the process involved and its relevance in living cell.   (2 marks)           
Question 18
 A grape is placed in plain water . After a while, it swells and becomes firm. Study the images below and explain the process involved and its relevance in living cell.   (2 marks)           
Question 19
A grape is placed in plain water. After a while, it swells and becomes firm. Study the images below and explain the process involved and its relevance in living cell.   (2 marks)           
Question 20
Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)
Question 21
Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)
Question 22
Explain what happens when raw cassava sticks are placed in pure water and in salty water overnight. How does osmosis cause the changes observed.  (4 marks)
Question 23
A student cuts two identical pieces of Irish potato. One is placed in salty water and the other in tap water for 6 hours. Describe the expected changes and explain how osmosis is involved.   (2 marks)
Question 24
A student cuts two identical pieces of Irish potato. One is placed in salty water and the other in tap water for 6 hours. Describe the expected changes and explain how osmosis is involved.   (2 marks)
Question 25
A student cuts two identical pieces of Irish potato. One is placed in salty water and the other in tap water for 6 hours. Describe the expected changes and explain how osmosis is involved.   (2 marks)
Question 26
Tomato skins are soaked separately in tap water and sugar solution. After 5 hours, describe what happens to each and explain your observations using osmosis.   (4 marks)
Question 27
Tomato skins are soaked separately in tap water and sugar solution. After 5 hours, describe what happens to each and explain your observations using osmosis.   (4 marks)
Question 28
Tomato skins are soaked separately in tap water and sugar solution. After 5 hours, describe what happens to each and explain your observations using osmosis.   (4 marks)
Question 29
In a kitchen experiment, a learner places mango slices in a concentrated sugar solution. After some time, they appear soft and shrunken. What explains this change?
Question 30
In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)
Question 31
In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)
Question 32
In a kitchen experiment, a learner places fresh mango slices into a container filled with concentrated sugar solution. After several hours, the mango slices appear soft and shrunken. What explains this change?   (1 mark)

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