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Lesson ⁦5-2⁩: Comparing Ecosystems

Science · Sixth Grade, Primary · Unit 5: Ecosystems · First Semester

A 10-question quiz; after every question you'll see the right answer with an explanation.
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What will you learn in this lesson?

Ecosystems on Earth differ according to the amount of rainfall and temperature: there are hot deserts, frozen tundra, and rain forests. In this lesson you compare land and water ecosystems and what lives in each.

  • Describes land ecosystems (biomes): desert, tundra, taiga, deciduous forest, rain forest, and grassland
  • Compares ecosystems in terms of rainfall, temperature, and the variety of living things
  • Distinguishes freshwater ecosystems from saltwater ecosystems
  • Links the adaptations of living things to the ecosystem they live in

💡 Tip: Arrange the land ecosystems in a table with two columns: rainfall and temperature. The rain forest gets the most rain, the desert the least, and the tundra is the coldest.

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Worked examples from the Comparing Ecosystems lesson questions

What do we call an ecosystem that gets very little rain and is usually hot, like the Empty Quarter?
  • A desert
  • A tropical rain forest
  • The tundra
  • A deciduous forest
✓ A desert
A desert is a dry ecosystem with little rain, and the Empty Quarter is one of the largest sand deserts in the world.
Which land ecosystem has the most rain and the greatest variety of living things?
  • The tropical rain forest
  • The desert
  • The tundra
  • Grasslands
✓ The tropical rain forest
Tropical rain forests are hot, humid, and very rainy, and they have the greatest variety of living things.
Show more examples (3)
What very cold ecosystem has a layer of soil that stays frozen all year?
  • The tundra
  • The desert
  • The rain forest
  • Grasslands
✓ The tundra
The tundra has a long, very cold winter, and under its surface is permanently frozen soil, so large trees do not grow there.
What is special about deciduous forests?
  • Their trees lose their leaves in the fall
  • It never rains in them
  • Their soil is always frozen
  • Only grasses grow in them
✓ Their trees lose their leaves in the fall
These forests have four distinct seasons; the trees lose their leaves in the fall and grow them again in the spring.
What plants are most common in taiga (northern) forests?
  • Evergreen cone-bearing trees
  • Palm trees
  • Cactus plants
  • Seaweed
✓ Evergreen cone-bearing trees
The taiga has a long, cold winter, and cone-bearing trees such as pines are most common there.

FAQ about the Comparing Ecosystems lesson

What is the difference between tundra and taiga?

Tundra is very cold with almost no trees, and beneath its surface is a layer of soil that stays frozen all year (permafrost). Taiga lies to its south and is a little warmer, covered with forests of evergreen conifers such as pine.

Why do rain forests have the greatest variety of living things?

Because rainfall is heavy and the temperature is warm all year, so plants grow abundantly and provide food and shelter for huge numbers of animals and insects.

How do I study the lesson Comparing Ecosystems and test myself on it?

Start the lesson quiz on Study with Ghada: 10 questions from the Science Sixth Grade, Primary question bank. After each answer you'll see the right answer with an explanation, and any questions you miss move to “Review my mistakes” until you master them.

Are Study with Ghada quizzes free and aligned with the curriculum?

Yes, completely free. They're built on the Science - Grade 6 - Semester 1 lessons in the same order as the book, and every question is reviewed and approved by a teacher before students see it.

Unit 5 lessons: Ecosystems

⁦5-1⁩ Food Chains, Food Webs, and the Energy Pyramid All Science Sixth Grade, Primary lessons →
← ⁦5-1⁩ Food Chains, Food Webs, and the Energy Pyramid ⁦6-1⁩ Soil →