Biome Ecosystems Reading Worksheet
Grade 6 Life Science • Ecosystems & Biomes
Name: Date: Score: /6
Biome Ecosystems in Action
Read the passage carefully, then bubble in the single best answer for each question.
Key Terms: climate • temperature • characteristic
Reading Passage: How Ecosystems Work Within a Biome 147 Words
A biome is a massive global community shaped by its long-term climate patterns and geography. Within each biome, distinct ecosystems thrive. While a biome covers huge geographic regions—such as deserts, tundras, or temperate forests—an ecosystem is a smaller web of living organisms interacting with their physical surroundings.
The dominant climate of a biome establishes the rules of life. For instance, the average temperature and precipitation levels determine which plant species can survive. In a tropical rainforest, constant warm temperature and heavy rainfall support dense canopies and diverse wildlife. In contrast, the freezing Arctic tundra allows only low shrubs and mosses to endure.
Every ecosystem reflects the characteristic traits of its parent biome. Herbivores eat local vegetation, carnivores hunt those plant-eaters, and decomposers recycle essential nutrients back into the soil. When physical conditions shift, every living link feels the impact, showing how interconnected life remains across every biome.
Comprehension Check: Main Idea & Key Details
Bubble the best answer for each question (no written response required).
1. What is the central main idea of the entire passage?
A. Arctic tundras receive too little rainfall to grow trees. B. Ecosystems are linked communities shaped by their biome's climate. C. Carnivores and herbivores compete constantly for decomposers. D. Decomposers are the only organisms that define a biome.
2. According to paragraph 1, how is an ecosystem different from a biome?
A. An ecosystem is a smaller web of interactions within a larger biome. B. An ecosystem includes only rocks and water, not living animals. C. An ecosystem always covers multiple continents simultaneously. D. An ecosystem exists completely separate from any climate conditions.
3. What two factors establish the "rules of life" for plant survival?
A. Animal migration paths and underground soil minerals B. Average temperature and precipitation levels C. Human population size and nearby road networks D. Total elevation above sea level and wind speed
4. Why do only low shrubs and mosses survive in the Arctic tundra?
A. Freezing temperatures limit which plant species can endure. B. Carnivores consume all other taller trees and bushes. C. Intense solar heat dries out deep root structures. D. Constant heavy tropical rain drowns taller plant roots.
5. What is the characteristic role of decomposers within an ecosystem?
A. Growing flowers and leaves to feed herbivores B. Hunting live carnivores to maintain population size C. Recycling essential nutrients from matter back into the soil D. Controlling global weather patterns and cloud moisture
6. Which statement best summarizes the author's point about ecosystem links?
A. Changes in physical conditions impact every connected living organism. B. Plant species survive completely independent of surrounding climate. C. All biomes share identical temperature and precipitation patterns. D. Herbivores can easily survive without plants if temperatures stay warm.
Standard: NGSS MS-LS2-1 & MS-LS2-3 • CCSS.ELA-LITERACY.RI.6.1 & RI.6.2 Multiple-Choice Comprehension Check • No Written Response
Biome Ecosystems Answer Key
Teacher Resource • Answer Key & Scoring Guide
GRADE 6 LIFE SCIENCE Standards: NGSS MS-LS2-1 • CCSS.ELA RI.6.1, RI.6.2
Biome Ecosystems in Action — Answer Key
Complete item rationales, correct answer explanations, and passage evidence for all 6 questions.
Total: 6 Questions (1 pt each = 6 pts)
Quick-Scan Answer Key:
1: B 2: A 3: B 4: A 5: C 6: A
Question 1 • Central Main Idea Key: B
Correct Answer: B. Ecosystems are linked communities shaped by their biome's climate.
Passage Evidence: Paragraphs 1 & 3 state biomes establish the climate rules and ecosystems reflect those traits in an interconnected web.
Distractor Note: Options A and D represent narrow details or false generalizations that do not encompass the whole passage.
Question 2 • Key Detail (Scale) Key: A
Correct Answer: A. An ecosystem is a smaller web of interactions within a larger biome.
Passage Evidence: "While a biome covers huge geographic regions... an ecosystem is a smaller web of living organisms interacting with their physical surroundings."
Distractor Note: Distractor B falsely claims ecosystems lack living animals; C confuses the regional scale.
Question 3 • Key Detail (Climate Drivers) Key: B
Correct Answer: B. Average temperature and precipitation levels.
Passage Evidence: "...average temperature and precipitation levels determine which plant species can survive" (Paragraph 2).
Distractor Note: Soil, roads, or elevation may influence local microclimates, but temperature and moisture are the primary biome drivers stated.
Question 4 • Key Detail (Adaptation) Key: A
Correct Answer: A. Freezing temperatures limit which plant species can endure.
Passage Evidence: "In contrast, the freezing Arctic tundra allows only low shrubs and mosses to endure" (Paragraph 2).
Distractor Note: Options C and D assign tropical/hot conditions to an Arctic biome, testing reading comprehension of contrast.
Question 5 • Key Detail (Ecosystem Roles) Key: C
Correct Answer: C. Recycling essential nutrients from matter back into the soil.
Passage Evidence: "...and decomposers recycle essential nutrients back into the soil" (Paragraph 3).
Distractor Note: Option A defines producers (plants); Option B confuses decomposers with apex predators.
Question 6 • Main Idea / Synthesis Key: A
Correct Answer: A. Changes in physical conditions impact every connected living organism.
Passage Evidence: "When physical conditions shift, every living link feels the impact, showing how interconnected life remains across every biome."
Distractor Note: Options B and D deny interconnectedness, which contradicts the core premise of trophic cascades.
Common Misconceptions & Remediation Tips
Confusing Biome vs. Ecosystem: Students often treat these terms as interchangeable synonyms. Remind students that a biome is the broad macro-region (e.g., desert, tropical rainforest), while an ecosystem refers to specific communities of living things and nonliving matter interacting within that biome.
Vocabulary in Context: Review the three focus terms: climate (long-term atmospheric pattern), temperature (degree of heat/cold), and characteristic (distinguishing trait or feature).
Grade 6 Life Science Assessment Key • Aligned to NGSS MS-LS2-1 Instructional & Scoring Master Copy
