Photosynthesis Test Questions
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Questions and Answers

What is the highest carbon dioxide concentration recorded in parts per million during the investigation?

  • 600 ppm
  • 400 ppm
  • 500 ppm
  • 700 ppm (correct)

    • Which variable was measured at the end of the investigation?

  • Soil temperature
  • Water usage
  • Crop plant weight (correct)
  • Plant height

    • How many days did the investigation last?

  • 50 days
  • 40 days (correct)
  • 25 days
  • 30 days

    • What was the trend in carbon dioxide concentration over the time period measured?

    <p>It increased consistently</p> Signup and view all the answers

    Which factor was specifically related to the carbon dioxide concentration measurement?

    <p>Use of composting units</p> Signup and view all the answers

    Which ion is primarily responsible for chlorophyll synthesis in plants?

    <p>Magnesium</p> Signup and view all the answers

    What role do nitrate ions play in plant growth?

    <p>They are a component of carbohydrates.</p> Signup and view all the answers

    Which process is primarily responsible for the production of glucose in plants?

    <p>Photosynthesis</p> Signup and view all the answers

    Which statement regarding respiration in plants is incorrect?

    <p>Plants produce glucose through respiration.</p> Signup and view all the answers

    What is one primary role of plants in relation to oxygen?

    <p>To release oxygen for respiration</p> Signup and view all the answers

    In the investigation using two glasshouses, what variable was measured to compare the conditions?

    <p>Concentration of carbon dioxide</p> Signup and view all the answers

    What is the primary purpose of glucose produced by plants?

    <p>To produce glucose for energy storage</p> Signup and view all the answers

    What is the primary benefit of using nitrates in fertilizers?

    <p>They help plants grow stronger leaves.</p> Signup and view all the answers

    Which factor does NOT limit plant growth rates in polar regions?

    <p>High water availability</p> Signup and view all the answers

    Which of the following is NOT necessary for plant growth?

    <p>Plastic containers</p> Signup and view all the answers

    What do plants primarily use chlorophyll for?

    <p>Photosynthesis</p> Signup and view all the answers

    In the Arctic tundra, what environmental condition hinders photosynthesis?

    <p>Short growing seasons with limited sunlight</p> Signup and view all the answers

    What is a key adaptation of Arctic wolves to survive in extremely cold conditions?

    <p>Thicker fur for insulation</p> Signup and view all the answers

    Which of the following does NOT contribute to limiting plant growth in harsh environments?

    <p>Availability of pollinators</p> Signup and view all the answers

    What is a function of roots in plants?

    <p>To maintain water balance in the plant</p> Signup and view all the answers

    Which of these factors does NOT affect the rate of photosynthesis in plants?

    <p>Soil temperature</p> Signup and view all the answers

    What does a hydrogencarbonate indicator measure in photosynthesis experiments?

    <p>Carbon dioxide concentration</p> Signup and view all the answers

    Which ion is essential for chlorophyll production?

    <p>Magnesium</p> Signup and view all the answers

    What is the primary function of the palisade mesophyll layer in a leaf?

    <p>Photosynthesis</p> Signup and view all the answers

    Which feature of a leaf increases its efficiency in absorbing sunlight?

    <p>Large surface area</p> Signup and view all the answers

    What is the role of stomata in leaves?

    <p>Gas exchange</p> Signup and view all the answers

    How do guard cells regulate gas exchange?

    <p>By opening and closing the stomata</p> Signup and view all the answers

    Which of the following is a limiting factor of photosynthesis?

    <p>Light intensity</p> Signup and view all the answers

    Which of the following conditions is likely to slow down photosynthesis?

    <p>Low light intensity</p> Signup and view all the answers

    What is the primary purpose of using a thermometer in this investigation?

    <p>To maintain a constant temperature for the experiment</p> Signup and view all the answers

    Why is a beaker of water used in the experimental setup?

    <p>To provide a medium for the pond plant to photosynthesize</p> Signup and view all the answers

    What role does the light meter play in this investigation?

    <p>To quantify the light intensity reaching the plant</p> Signup and view all the answers

    Which factor is directly manipulated in this investigation?

    <p>The concentration of sodium hydrogencarbonate</p> Signup and view all the answers

    How is the rate of photosynthesis being measured in this setup?

    <p>By counting the number of bubbles produced</p> Signup and view all the answers

    What could be a potential limitation of this experimental setup?

    <p>The lamp may provide inconsistent light intensity</p> Signup and view all the answers

    In which way could the student improve the accuracy of counting bubbles?

    <p>Use a digital counter for the bubbles</p> Signup and view all the answers

    What does a higher bubble count indicate about the rate of photosynthesis?

    <p>The plant is converting more light energy into chemical energy</p> Signup and view all the answers

    What is photosynthesis?

    <p>The process by which plants convert water and carbon dioxide into glucose using light energy</p> Signup and view all the answers

    Which of the following is the word equation for photosynthesis?

    <p>Carbon Dioxide + Water -&gt; Glucose + Oxygen</p> Signup and view all the answers

    Which pigment is primarily responsible for absorbing light during photosynthesis?

    <p>Chlorophyll</p> Signup and view all the answers

    In which part of the plant does photosynthesis mainly occur?

    <p>Leaves</p> Signup and view all the answers

    What are the products of photosynthesis?

    <p>Oxygen and Glucose</p> Signup and view all the answers

    What are the raw materials needed for photosynthesis?

    <p>Water and Carbon Dioxide</p> Signup and view all the answers

    Which process utilizes the glucose produced in photosynthesis?

    <p>Respiration</p> Signup and view all the answers

    Why is starch often tested to determine photosynthesis?

    <p>Starch is stored energy that indicates glucose production</p> Signup and view all the answers

    Study Notes

    Exam Instructions

    • Do not open the booklet until told
    • Write in dark blue or black pen on both sides of the paper
    • Answer all questions
    • Do not leave the examination room early
    • Do not talk during the exam
    • Raise your hand if you have a problem
    • Do not speak until outside the exam room, once the exam has finished for everyone
    • No cell phones/electronic devices permitted
    • No food or drink allowed

    Photosynthesis Test Questions

    • What is photosynthesis? The process where plants convert water and carbon dioxide into glucose, using light energy
    • Photosynthesis word equation: Carbon dioxide + water -> glucose + oxygen
    • Photosynthesis pigment: Chlorophyll is primarily responsible for absorbing light during photosynthesis.
    • Photosynthesis location: Photosynthesis mainly occurs in the leaves of a plant
    • Photosynthesis products: The products of photosynthesis are glucose and oxygen
    • Photosynthesis raw materials: The raw materials needed for photosynthesis are water and carbon dioxide
    • Starch and photosynthesis: Starch is tested to determine photosynthesis because it is insoluble and stored in leaves.
    • Hydrogencarbonate indicator: A hydrogencarbonate indicator measures carbon dioxide concentration in experiments measuring photosynthesis
    • Chlorophyll necessity: An experiment using a variegated leaf demonstrates the necessity of chlorophyll for photosynthesis
    • Photosynthesis purpose: The main purpose of photosynthesis is to produce glucose for energy storage

    Leaf Structure and Adaptations

    • Palisade mesophyll function: The primary function of the palisade mesophyll is photosynthesis.
    • Leaf efficiency: A large surface area increases a leaf's efficiency in absorbing sunlight
    • Stomata function: Stomata are crucial for gas exchange in leaves
    • Guard cell function: Guard cells regulate gas exchange by opening and closing stomata
    • Spongy mesophyll air spaces: The air spaces in spongy mesophyll are for allowing for gas exchange
    • Xylem function: The xylem transports water and minerals in plants
    • Chlorophyll production: Magnesium is essential for chlorophyll production

    Plant Limiting Factors

    • Photosynthesis limiting factors: Water availability, light intensity, are factors limiting photosynthesis
    • Conditions slowing photosynthesis: Low light intensity is a condition that can slow photosynthesis

    Additional Information

    • Exam Structure: The exam will have multiple choice and written response questions.
    • Multiple Choice questions: There are 20 multiple-choice questions
    • Written response questions: There are 6 written response questions
    • Total marks: The total marks for the exam are 100.

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    Description

    This quiz covers the fundamentals of photosynthesis, including its definition, word equation, and key components like chlorophyll. Students will answer questions about the location, raw materials, and products of the photosynthesis process. This is an essential topic for understanding plant biology.

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