Generated with Monsha

Save this resource to edit, expand, or export it, or create more resources for free.

Photosynthesis Vocabulary: Compare and Contrast Pairs Worksheet

Key Vocab Words
Grade 7
English

Photosynthesis Vocabulary: Compare and Contrast Pairs Worksheet

Instructions

For each vocabulary pair below, compare and contrast the words using the guiding questions:
  • How are these words similar?
  • How are they different?
  • When would you use one instead of the other?
Write your answers in complete sentences.


Pair 1: Chlorophyll & Chloroplast

Chlorophyll
  • Chlorophyll is a green pigment found in plants that captures light energy for photosynthesis.
  • Example: Chlorophyll gives leaves their green color.
Chloroplast
  • A chloroplast is an organelle in plant cells where photosynthesis takes place.
  • Example: Chloroplasts are found in the cells of plant leaves.
Compare and Contrast:
  • How are chlorophyll and chloroplast similar?
  • How are they different?
  • When would you use one instead of the other?


Pair 2: Photosynthesis & Cellular Respiration

Photosynthesis
  • Photosynthesis is the process by which plants use sunlight to make food from carbon dioxide and water.
  • Example: During photosynthesis, plants produce glucose and release oxygen.
Cellular Respiration
  • Cellular respiration is the process where cells break down glucose to release energy, producing carbon dioxide and water.
  • Example: Both plant and animal cells carry out cellular respiration to obtain energy from food.
Compare and Contrast:
  • How are photosynthesis and cellular respiration similar?
  • How are they different?
  • When would you use one instead of the other?


Pair 3: Glucose & Starch

Glucose
  • Glucose is a simple sugar that serves as an energy source for cells.
  • Example: Plants produce glucose during photosynthesis.
Starch
  • Starch is a complex carbohydrate made by joining many glucose molecules together, used for energy storage in plants.
  • Example: Plants store extra glucose as starch in roots and seeds.
Compare and Contrast:
  • How are glucose and starch similar?
  • How are they different?
  • When would you use one instead of the other?


Pair 4: Light-dependent Reactions & Light-independent Reactions

Light-dependent Reactions
  • Light-dependent reactions are the first stage of photosynthesis, using sunlight to split water and produce energy molecules.
  • Example: These reactions occur in the thylakoid membranes of chloroplasts.
Light-independent Reactions
  • Light-independent reactions (Calvin Cycle) use energy from the first stage to make glucose from carbon dioxide.
  • Example: These reactions occur in the stroma of the chloroplast.
Compare and Contrast:
  • How are light-dependent and light-independent reactions similar?
  • How are they different?
  • When would you use one instead of the other?


Pair 5: Oxygen & Carbon Dioxide

Oxygen
  • Oxygen is a gas released during photosynthesis and used by living things for respiration.
  • Example: Plants release oxygen into the air as they photosynthesize.
Carbon Dioxide
  • Carbon dioxide is a gas taken in by plants to use in photosynthesis and released by animals during respiration.
  • Example: Plants absorb carbon dioxide from the air through their leaves.
Compare and Contrast:
  • How are oxygen and carbon dioxide similar?
  • How are they different?
  • When would you use one instead of the other?