This medium-level worksheet has students fill in blanks, and match items from two columns to practice ecosystems skills.
It includes 10 questions across 2 sections for focused practice.
Style:
Ecosystems
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A close, long-term relationship between two different species is called symbiosis.
2. In mutualism, both species benefit from the relationship.
3. In commensalism, one species benefits while the other is neither helped nor harmed.
4. A parasite lives on or inside another organism and takes nutrients at the host's expense.
5. Bees pollinating flowers while collecting nectar is an example of mutualism.
6. When two species compete for the same food or space, the interaction is called competition.
7. A tick feeding on a deer's blood is an example of parasitism.
8. Small birds that ride on a rhinoceros to eat insects are an example of mutualism.
9. A remora fish attaching to a shark for free transportation without affecting the shark is commensalism.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Clownfish living safely among sea anemone tentacles
→ Mutualism — clownfish gets protection and anemone gets food scraps
Commensalism — barnacles get a surface to live on; whale is unaffected
Tapeworm living inside a dog's intestines
→ Parasitism — tapeworm absorbs nutrients and the dog loses nourishment
Mutualism — clownfish gets protection and anemone gets food scraps
Barnacles growing on a whale's skin
→ Commensalism — barnacles get a surface to live on; whale is unaffected
Mutualism — fungus gets food from algae and algae gets moisture from fungus
Fungi and algae forming lichen on a rock
→ Mutualism — fungus gets food from algae and algae gets moisture from fungus
Parasitism — tapeworm absorbs nutrients and the dog loses nourishment
Ecosystems
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) A close, long-term relationship between two different species is called symbiosis.
2) In mutualism, both species benefit from the relationship.
3) In commensalism, one species benefits while the other is neither helped nor harmed.
4) A parasite lives on or inside another organism and takes nutrients at the host's expense.
5) Bees pollinating flowers while collecting nectar is an example of mutualism.
6) When two species compete for the same food or space, the interaction is called competition.
7) A tick feeding on a deer's blood is an example of parasitism.
8) Small birds that ride on a rhinoceros to eat insects are an example of mutualism.
9) A remora fish attaching to a shark for free transportation without affecting the shark is commensalism.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Clownfish living safely among sea anemone tentacles
→ Mutualism — clownfish gets protection and anemone gets food scraps
Commensalism — barnacles get a surface to live on; whale is unaffected
Tapeworm living inside a dog's intestines
→ Parasitism — tapeworm absorbs nutrients and the dog loses nourishment
Mutualism — clownfish gets protection and anemone gets food scraps
Barnacles growing on a whale's skin
→ Commensalism — barnacles get a surface to live on; whale is unaffected
Mutualism — fungus gets food from algae and algae gets moisture from fungus
Fungi and algae forming lichen on a rock
→ Mutualism — fungus gets food from algae and algae gets moisture from fungus
Parasitism — tapeworm absorbs nutrients and the dog loses nourishment
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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