Plants Worksheet - GCSE - Intermediate
Plants worksheet for Key Stage 4 / GCSE (Ages 14-16). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.
Exploring Plant Science
Ages 14-16, Intermediate Level
Instructions: This worksheet will guide you through various aspects of plant science, focusing on photosynthesis, plant cell structure, and the role of plants in ecosystems. Engage with data analysis, problem-solving, and extended writing to deepen your understanding.
Photosynthesis Equation Analysis
Examine the chemical equation for photosynthesis and answer the questions. Consider the role of each component and the conditions necessary for the process.
The equation for photosynthesis is: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
1. Identify the reactants in the photosynthesis equation.
2. What are the products of photosynthesis?
3. Explain why sunlight is essential for this process.
Plant Cell Structure
Label the parts of the plant cell diagram. Use the word bank to correctly identify each component.
Word Bank
Data Analysis: Plant Growth Experiment
Analyse the data from a plant growth experiment and answer the questions. Consider how different variables affect growth.
| Day | Height (cm) | Light Intensity (lux) |
| 1 | 2 | 1000 |
| 2 | 3 | 1500 |
| 3 | 4 | 2000 |
| 4 | 5 | 2500 |
1. On which day was the light intensity highest?
2. What is the average height of the plant over the 5 days?
3. Describe the trend in plant height as light intensity increases.
Extended Writing: Importance of Photosynthesis
Write an essay discussing the importance of photosynthesis in ecosystems. Include its role in the carbon cycle and its impact on global oxygen levels.
Discuss the significance of photosynthesis in maintaining ecological balance and supporting life on Earth. [10 marks]
Calculating Plant Respiration Rates
Solve the following problems related to plant respiration. Use the given data to calculate the rate of respiration in different conditions.
1. A plant respires 0.5 moles of glucose in 1 hour. Calculate the volume of CO₂ produced at standard conditions.
2. If the plant's respiration rate doubles, how much oxygen is consumed in 2 hours?
Role of Plants in the Carbon Cycle
Explain the role of plants in the carbon cycle. Use specific examples to illustrate how plants contribute to carbon sequestration and release.
Describe how plants act as carbon sinks and their impact on atmospheric CO₂ levels. [6 marks]
Comparing Photosynthesis and Respiration
Complete the table comparing photosynthesis and respiration. Consider their processes, reactants, and products.
| Process | Photosynthesis | Respiration |
| Reactants | 6CO₂ + 6H₂O | C₆H₁₂O₆ + 6O₂ |
| Products | C₆H₁₂O₆ + 6O₂ | 6CO₂ + 6H₂O |
1. What is the main purpose of photosynthesis?
2. How does respiration complement photosynthesis in plants?
Evaluating Plant Adaptations
Evaluate how different plant adaptations help them survive in various environments. Provide examples of specific adaptations and their benefits.
Analyse the significance of adaptations such as thick leaves, deep roots, and waxy surfaces in plant survival. [8 marks]
Activity 1: CO₂ and H₂O ; C₆H₁₂O₆ and O₂ ; Sunlight provides energy
Activity 2: 1.Cell Wall 2.Cell Membrane 3.Nucleus 4.Vacuole 5.Chloroplast 6.Mitochondria
Activity 3: Day 5 ; 4 cm ; Increases with light intensity
Activity 4: Subjective (see content)
Activity 5: 11.2 L ; 44.8 L
Activity 6: Subjective (see content)
Activity 7: Convert light energy to chemical energy ; Provides energy for cellular processes
Activity 8: Subjective (see content)
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