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Science Worksheet
🌿 Forest Biodiversity
Science · Class 7 · Forests: Our Lifeline
Name:
Class:
Date:
Marks:
/ 16
Section A: Fill in the blanks
[5 marks]

Fill in each blank with the correct word from the lesson.

  1. The _______ at the top has the tallest trees, exposed to maximum sunlight, and is home to eagles and large butterflies.
  2. A _______ is not just trees — it is an enormously complex layered ecosystem.
  3. _______ means the variety of all living things in an area — different species of plants, animals, fungi, and microorganisms.
  4. Removing even a single _______ can cause herbivore populations to explode and vegetation to be destroyed, collapsing the whole system.
  5. _______s like deer and caterpillars eat plants.
Section B: Circle the correct answer
[3 marks]

Choose the best option for each question.

  1. Which layer of a forest gets the most sunlight?
    a) Forest floorb) Shrub layerc) Understoreyd) Emergent layer
  2. What do decomposers do in a forest ecosystem?
    a) Make food from sunlightb) Eat herbivoresc) Break down dead matter and return nutrients to soild) Pollinate flowers
  3. Why is high biodiversity important for an ecosystem?
    a) It makes the forest look prettierb) It makes ecosystems more resilient to disruptionsc) More species means less competitiond) It only matters for tropical forests
Section C: True or False
[4 marks]

Write T for True or F for False in the brackets.

  1. The emergent layer at the top has the tallest trees, exposed to maximum sunlight, and is home to eagles and large butterflies.
  2. The Forest floor at the top has the tallest trees, exposed to maximum sunlight, and is home to eagles and large butterflies.
  3. Break down dead matter and return nutrients to soil is one of the key concepts in the lesson on Forest Biodiversity.
  4. Make food from sunlight is the main topic of this lesson.
Section D: Answer in one line
[4 marks]
  1. In your own words, explain what Forest Biodiversity means.
  2. List two things you learned from this lesson on Forest Biodiversity.
Total Marks: 16⭐ Good luck!doodlr.xyz/worksheets/forest-biodiversity
Answer Key
Forest Biodiversity
Section A — Fill in the blanks
  1. Emergent layer
  2. Forest
  3. Biodiversity
  4. predator
  5. herbivore
Section B — MCQ
  1. d) Emergent layer
  2. c) Break down dead matter and return nutrients to soil
  3. b) It makes ecosystems more resilient to disruptions
Section C — True or False
  1. T — True
  2. F — False
  3. T — True
  4. F — False
Section D — Short Answer

Accept any reasonable answer that shows understanding of Forest Biodiversity.

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