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Life Science & Ecosystems

Grade 2 · On-level practice · 8 questions · Version PG-1O7UGE5-26B3

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1.Explain “photosynthesis” in your own words.
2.Explain “food chain” in your own words.
3.Explain “carrying capacity” in your own words.
4.Explain “consumer” in your own words.
5.Explain “food web” in your own words.
6.Explain “decomposer” in your own words.
7.Explain “ecosystem” in your own words.
8.Explain “biodiversity” 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 3
  1. Explain “photosynthesis” in your own words.the process plants use to make sugar from light, water, and carbon dioxide
  2. Explain “food chain” in your own words.a sequence showing how energy moves between organisms
  3. Explain “carrying capacity” in your own words.the largest population an environment can support
  4. Explain “consumer” in your own words.an organism that gets energy by eating others
  5. Explain “food web” in your own words.connected food chains in an ecosystem
  6. Explain “decomposer” in your own words.an organism that breaks down dead material
  7. Explain “ecosystem” in your own words.living and nonliving things interacting in an area
  8. Explain “biodiversity” in your own words.the variety of living things in an area

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.