Unit 6 Plant Nutrition End of Topic Test PDF

Unit 6 Plant Nutrition End of Unit Test Fundamental Biology Time: 40 mins Full Name:_____________________________________________________ Structure of Exam READ THESE INSTRUCTIONS FI...

Unit 6 Plant Nutrition End of Unit Test Fundamental Biology Time: 40 mins Full Name:_____________________________________________________ Structure of Exam READ THESE INSTRUCTIONS FIRST l Please do not open the examination booklet until directed to do so. l Write in dark blue or black pen on both sides of the paper. l Answer all questions. l Students are reminded that they are not permitted to leave the examination room early. l Please do not talk during the examination. If you have a problem, please raise your hand and wait quietly for a teacher. l At the conclusion of your examination please refrain from speaking until you are outside the exam room as there may still be other examinations still in progress. l No cell phones/electronic devices are allowed during the examination at any time. l No food or drink to be brought into examination room. Type of Question Number of Questions Full marks Score Achieved A Multiple Choice 20 20 B Written Response 6 23 Overall Grade / 100 Photosynthesis 1. What is photosynthesis? A) The process by which plants absorb minerals from the soil B) The process by which plants convert water and carbon dioxide into glucose using light energy C) The breakdown of glucose in the presence of oxygen D) The movement of water through the xylem 2. Which of the following is the word equation for photosynthesis? A) Glucose + Oxygen -> Carbon Dioxide + Water + Energy B) Carbon Dioxide + Water -> Glucose + Oxygen C) Glucose + Water -> Carbon Dioxide + Oxygen D) Oxygen + Carbon Dioxide -> Glucose + Water 3. Which pigment is primarily responsible for absorbing light during photosynthesis? A) Carotene B) Chlorophyll C) Anthocyanin D) Xanthophyll 4. In which part of the plant does photosynthesis mainly occur? A) Roots B) Stems C) Leaves D) Flowers 5. What are the products of photosynthesis? A) Oxygen and Glucose B) Carbon Dioxide and Water C) Oxygen and Water D) Glucose and Minerals 6. What are the raw materials needed for photosynthesis? A) Oxygen and Glucose B) Water and Carbon Dioxide C) Carbon Dioxide and Oxygen D) Glucose and Water 7. Why is starch often tested to determine photosynthesis? A) It is the initial product of photosynthesis B) It is insoluble and stored in leaves C) It reacts with oxygen to release energy D) It absorbs carbon dioxide 8. What does a hydrogencarbonate indicator measure in photosynthesis experiments? A) Oxygen concentration B) Carbon dioxide concentration C) pH levels D) Water uptake Leaf Structure and Adaptations 9. Which ion is essential for chlorophyll production? A) Magnesium B) Calcium C) Nitrate D) Potassium 10. What is the primary function of the palisade mesophyll layer in a leaf? A) Transport of water and nutrients B) Storage of starch C) Photosynthesis D) Gas exchange 11. Which feature of a leaf increases its efficiency in absorbing sunlight? A) Large surface area B) Thin cuticle C) Spongy mesophyll D) Xylem vessels 12. What is the role of stomata in leaves? A) Water absorption B) Gas exchange C) Nutrient uptake D) Photosynthesis 13. How do guard cells regulate gas exchange? A) By opening and closing the stomata B) By moving water into the xylem C) By transporting glucose to the phloem D) By blocking light from entering the leaf 14. What are the air spaces in the spongy mesophyll primarily for? A) Absorbing light B) Allowing for gas exchange C) Supporting the leaf's structure D) Storing water 15. What is the function of xylem in plants? A) Transporting food from leaves to other parts B) Transporting water and minerals C) Conducting photosynthesis D) Producing chlorophyll 16. What is the balanced chemical equation for photosynthesis? A) C6H12O6 + 6O2 -> 6CO2 + 6H2O B) 6CO2 + 6H2O -> C6H12O6 + 6O2 C) C6H12O6 + H2O -> 6CO2 + O2 D) 6CO2 + O2 -> C6H12O6 + 6H2O Limiting Factors 17. Which of the following is a limiting factor of photosynthesis? A) Water availability in soil B) Light intensity C) Number of stomata D) Leaf size 18. Which of the following conditions is likely to slow down photosynthesis? A) High carbon dioxide levels B) Low light intensity C) Sufficient water availability D) Optimal temperature 19. Which of the following experiments demonstrates the necessity of chlorophyll for photosynthesis? A) Using sodium hydroxide to absorb carbon dioxide B) Using a variegated leaf C) Submerging a plant in water D) Using a hydrogencarbonate indicator 20. What is the main reason for performing photosynthesis? A) To produce glucose for energy storage B) To release oxygen for respiration C) To absorb minerals from the soil D) To maintain water balance in the plant  1 1 The diagram below is a photomicrograph of a leaf of the tea plant, Camellia sinensis. A B E C D Name A to E. A............................................................................................................................................... B............................................................................................................................................... C............................................................................................................................................... D............................................................................................................................................... E................................................................................................................................................ [Total: 5]  2 2 The photograph below shows an Arctic wolf, Canis lupus. These wolves are one of the few mammals adapted to the extreme cold of the tundra in the Canadian Arctic and in Alaska. The food available to animals in the Arctic tundra is limited. There is a short growing season for plants and the environmental conditions do not favour high rates of photosynthesis and growth compared with temperate and tropical ecosystems. State three conditions that limit plant growth rates. 1............................................................................................................................................... 2............................................................................................................................................... 3............................................................................................................................................... [Total: 3]  3 3 A student carried out an investigation to find the effect of carbon dioxide concentration on the rate of photosynthesis of an aquatic plant. The apparatus that the student used is shown in the diagram below. The student was advised to use a light meter positioned at the same distance from the lamp as the pond plant. The student counted the number of bubbles produced by the cut end of the stem. dilute sodium hydrogencarbonate solution thermometer movable lamp stop watch water-bath pond plant 0 15 ruler cm Fig. 2.1 (a) Explain why the student included the following in the apparatus. (i) The beaker of water and the thermometer................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. (ii) The light meter and the ruler................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. [Total: 4]  4 4 Researchers investigated the effects of using a fertiliser on the number of leaves grown by plants. The fertiliser contained nitrate and magnesium ions. Plants in group 1 were grown in soil with fertiliser. Plants in group 2 were grown in soil without fertiliser. The results are shown in the graph. A student wrote a series of statements to explain why an increase in nitrate and magnesium ions increased the number of leaves. Not all of the statements are correct. A – Magnesium is required for the synthesis of chlorophyll. B – Nitrate ions are a component of carbohydrates. C – Chlorophyll is required for photosynthesis. D – Proteins are needed for growth. E – Plants make their own food by the process of respiration. F – Respiration produces glucose. State the letters of the correct statements................................................................................................................................................... [Total: 3]  5 5 Two glasshouses were used in an investigation. One glasshouse contained composting units and the other did not. Each glasshouse contained the same number and type of crop plants. The concentration of carbon dioxide in both glasshouses was measured at midday. The results are shown in the graph below. 700 600 × × × × 500 × carbon dioxide 400 × × concentration × × with composting units / parts per million × 300 × no composting units × × 200 × 100 0 0 10 20 30 40 50 60 time / days At the end of the investigation the crop plants were harvested and weighed. The table below gives the results. mean fresh mass / g per plant crop plant no composting units composting units Chinese cabbage 115.7 355.8 celery 44.7 133.9 lettuce 95.5 349.4 Use the information in the graph and in the table to summarise the results of the study................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... [Total: 4]  6 6 The diagram shows the positions of the different tissues in part of a dicotyledonous leaf. P Identify the tissues described in the table by: drawing label lines with the corresponding letter on the diagram and stating the name of each tissue in the table. The label, line and name of the tissue for letter P has been completed for you on the diagram and in the table. letter description name of the tissue a protective transparent layer that allows light to P upper epidermis reach the inner tissues Q conducts water from the stem R contains many interconnected air spaces S transports sucrose and amino acids traps the most light energy to synthesise T carbohydrates [Total: 4]