Grade 5 learners explore decomposers like fungi and bacteria that recycle nutrients in ecosystems. Using fill in the blanks and a matching activity, students connect words such as decomposer, decomposition, and nutrients to clear definitions while explaining why every Grade 5 ecosystem needs recyclers. Students study decomposers like mushrooms and bacteria and trace how they recycle dead matter back into soil for new plant growth in Grade 5 ecology.
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Energy in Ecosystems
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Organisms that break down dead plants and animals are called decomposers.
2. Mushrooms and molds are examples of decomposers called fungi.
3. Tiny one-celled decomposers found in soil are bacteria.
4. Decomposers return important nutrients to the soil for plants to use.
5. Without decomposers, dead plants and animals would simply pile up.
6. Decomposers are an important part of every ecosystem.
7. The breakdown of dead matter into nutrients is called decomposition.
8. Earthworms help decomposition by breaking dead leaves into smaller pieces.
9. Decomposers are sometimes called nature's recyclers.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Decomposer
→ Organism that breaks down dead matter
Organism that breaks down dead matter
Fungi
→ Mushrooms and molds that recycle nutrients
Mushrooms and molds that recycle nutrients
Bacteria
→ Tiny one-celled organisms in the soil
Tiny one-celled organisms in the soil
Decomposition
→ The process of breaking down dead matter
The process of breaking down dead matter
Energy in Ecosystems
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Organisms that break down dead plants and animals are called decomposers.
2) Mushrooms and molds are examples of decomposers called fungi.
3) Tiny one-celled decomposers found in soil are bacteria.
4) Decomposers return important nutrients to the soil for plants to use.
5) Without decomposers, dead plants and animals would simply pile up.
6) Decomposers are an important part of every ecosystem.
7) The breakdown of dead matter into nutrients is called decomposition.
8) Earthworms help decomposition by breaking dead leaves into smaller pieces.
9) Decomposers are sometimes called nature's recyclers.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Decomposer
→ Organism that breaks down dead matter
Organism that breaks down dead matter
Fungi
→ Mushrooms and molds that recycle nutrients
Mushrooms and molds that recycle nutrients
Bacteria
→ Tiny one-celled organisms in the soil
Tiny one-celled organisms in the soil
Decomposition
→ The process of breaking down dead matter
The process of breaking down dead matter
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