IGCSE Cambridge (CIE) Biology Transport in Plants PDF

IGCSE Cambridge (CIE) Biology 16 mins 16 questions Multiple Choice Questions Transport in Plants Xylem & Phloem / Root Hair Cells / Pathway Taken by Water / Transpiration / Investigating Temperature & Wind Speed / Transpiration Stream / Explaining the E...

IGCSE Cambridge (CIE) Biology 16 mins 16 questions Multiple Choice Questions Transport in Plants Xylem & Phloem / Root Hair Cells / Pathway Taken by Water / Transpiration / Investigating Temperature & Wind Speed / Transpiration Stream / Explaining the Effects of Temperature, Wind Speed & Humidity / Translocation Easy (5 questions) /5 Scan here to return to the course or visit savemyexams.com Medium (6 questions) /6 Hard (5 questions) /5 Total Marks /16 © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 1 Easy Questions 1 The diagram below shows a potted plant and the same plant 48 hours later. What has caused the plant’s appearance to change? A. Water loss by translocation is greater than water uptake. B. Water evaporating from the leaves by translocation. C. Water loss by transpiration is greater than water uptake. D. Water loss from the leaves by osmosis. (1 mark) 2 Which order below is correct in describing the pathway of water as it travels from the roots through a plant? A. Root hair cell → xylem → mesophyll cells → air spaces → stomata B. Root hair cell → xylem → air spaces → mesophyll cells → stomata C. Root hair cell → mesophyll cells → phloem → stomata D. Root hair cell → mesophyll cells → xylem → stomata (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 2 3 Extended only Which of the following is a correct explanation of the process of translocation in a plant? A. The movement of mineral ions through the xylem of a plant. B. The movement of sucrose and amino acids through the phloem from a source to a sink. C. The one-way movement of sucrose and amino acids through the phloem. D. The movement of sucrose and amino acids through the phloem from a sink to a source. (1 mark) 4 The diagram shows a simplified water cycle. Which of the processes listed below would be involved in the loss of water from the tree? A. Respiration © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 3  B. Translocation C. Photosynthesis D. Evaporation (1 mark) 5 A potometer can be used to measure the rate that a piece of plant transpires under various conditions. Part of a potometer is shown in the diagram below. Which statement, relating to how a potometer works, is false? A. A potometer uses the transpiration stream to produce movement of an air bubble that can be measured. B. In a potometer, an air bubble moves away from the piece of plant tissue that is under investigation. C. In order to determine the rate of transpiration, the movement of the bubble must be measured alongside the time taken. D. The leaves of the plant in the potometer must be dry during the experiment. (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 4 Medium Questions 1 Extended only A dicot plant is placed into a bowl of water coloured with red dye. After 1 hour, a cross section of one of the roots is cut. After 4 hours, a cross section is cut from the stem. Which labelled regions would be stained red in each case? A. 1 and 3 B. 1 and 4 C. 2 and 4 D. 2 and 3 (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 5 2 Which of the following is a correct explanation of the effect of root hairs on absorption? A. Provide a large surface area, maximising the rate of absorption of water and ions by osmosis. B. Provide a large surface area, maximising the rate of absorption of water by osmosis and ions by active transport. C. Increase the surface area, maximising the uptake of water by osmosis and ions by diffusion. D. Provide a surface area, increasing the rate of absorption of water and ions by active transport. (1 mark) 3 Which of the following processes is/are involved in the loss of water from the leaves of plants? 1. diffusion 2. osmosis 3. condensation 4. evaporation A. 1 and 3 B. 1 only C. 4 only D. 1 and 4 (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 6 4 Extended only A student collected some of the solution from the phloem in the stem of a plant. Which of the following would be present in the liquid? A. Glucose B. Starch C. Amino acids D. Cellulose (1 mark) 5 A decrease in which of the following factors would normally cause the transpiration rate to increase? A. Stomatal density B. Light intensity C. Temperature D. Humidity (1 mark) 6 Extended only Which environmental factor is most likely to be responsible for a plant to wilt? A. A decrease in light intensity. B. An increase in humidity. C. A decrease in the amount of available water. D. A decrease in wind speed. (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 7 Hard Questions 1 Extended only The xylem has specific adaptations to allow it to transport water and mineral ions from the roots of a plant to the leaves as a result of transpiration. Which processes produce the adaptations in xylem vessels to allow the continuous flow of water? cell walls break down between cytoplasm and organelles removed adjacent cells from each cell A ✘ ✘ B ✓ ✓ C ✘ ✓ D ✓ ✘ (1 mark) 2 Extended only © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 8  Which of the following graphs correctly shows the relationship between the rate of transpiration and atmospheric humidity? (1 mark) 3 Extended only © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 9 The diagram below shows two shoots at the start of an experiment set up by a group of students. What are the most likely readings on the spring balances after four days? © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 10  Spring balance readings / g shoot A shoot B A 40 40 B 40 34 C 34 40 D 34 34 (1 mark) 4 The table below shows some characteristics of four different plants. The plants are growing in the same environmental conditions. Which plant will have the lowest rate of transpiration? number of average surface average density of average leaves on area of one leaf stomata on leaves / diameter of one 2 2 plant / cm stomata per mm stoma / µm A 36 53 276 19 B 21 51 247 18 C 24 45 249 15 D 17 40 151 16 © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 11  (1 mark) 5 Extended only Which row of the table below shows substances transported through the phloem and xylem, and the direction of transport, correctly? phloem direction of xylem direction of transport transport A sucrose and bi-directional (up water and bi-directional (up amino acids and down) mineral ions and down) B sucrose unidirectional (up) water and bi-directional (up mineral ions and down) C sucrose bi-directional (up water unidirectional (up) and down) D sucrose and unidirectional (up) water unidirectional (up) amino acids (1 mark) © 2024 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 12