Grade 4 · Science · On Level
Free Life Science & Ecosystems worksheet - version 12
Grade 4 life science & ecosystems practice with original, difficulty-matched questions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Life Science & Ecosystems
Grade 4 · On-level practice · 8 questions · Version PG-30ZWG9-1MA6
1.Explain “carrying capacity” in your own words.
2.Explain “photosynthesis” in your own words.
3.Explain “pollination” in your own words.
4.Explain “biodiversity” in your own words.
5.Explain “homeostasis” in your own words.
6.Explain “natural selection” in your own words.
7.Explain “food web” in your own words.
8.Explain “symbiosis” in your own words.
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 12
- Explain “carrying capacity” in your own words.the largest population an environment can support
- Explain “photosynthesis” in your own words.the process plants use to make sugar from light, water, and carbon dioxide
- Explain “pollination” in your own words.the transfer of pollen that helps plants reproduce
- Explain “biodiversity” in your own words.the variety of living things in an area
- Explain “homeostasis” in your own words.maintenance of stable internal conditions
- Explain “natural selection” in your own words.the process in which helpful inherited traits become more common
- Explain “food web” in your own words.connected food chains in an ecosystem
- Explain “symbiosis” in your own words.a close relationship between different species
Worked example
Connect structures and behaviors to survival, growth, reproduction, and energy flow.
Common mistake
Describing a trait without explaining its function.
Helpful hint
Ask how the feature affects survival or reproduction.