Ecosystems — Homi Bhabha Class 6 Biology MCQs with Solutions
Free Homi Bhabha Class 6 Biology Ecosystems MCQs with step-by-step solutions (10 questions). Part of Ecology & Environment. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Ecosystems · easy · theory
An ecosystem is made up of living things together with their surroundings. Which of these is an example of an ecosystem?
A. A pond ✓ Correct
B. A pencil
C. A plastic bag
D. A single stone
Solution: A pond has living things (fish, plants) and non-living surroundings (water, air), so it is an ecosystem.
Q2 — Ecosystems · easy · theory
Which of these is a LIVING (biotic) part of an ecosystem?
A. Sunlight
B. A rock
C. A tree ✓ Correct
D. Water
Solution: A tree is alive, so it is a living (biotic) part; a rock, water and sunlight are non-living.
Q3 — Ecosystems · easy · theory
Which of these is a NON-LIVING (abiotic) part of an ecosystem?
A. A frog
B. Sunlight ✓ Correct
C. A grass plant
D. A bird
Solution: Sunlight is non-living, so it is an abiotic part of the ecosystem.
Q4 — Ecosystems · easy · theory
A desert, a forest and a pond are all examples of:
A. machines
B. ecosystems ✓ Correct
C. planets
D. metals
Solution: Each one has living things and non-living surroundings, so each is an ecosystem.
Q5 — Ecosystems · medium · theory
Green plants in an ecosystem are called producers because they:
A. make their own food using sunlight ✓ Correct
B. eat other animals
C. hunt small insects
D. drink only water
Solution: Plants make their own food from sunlight, so they are called producers.
Q6 — Ecosystems · medium · theory
Animals that eat plants or other animals for their food are called:
A. the sun
B. decomposers
C. consumers ✓ Correct
D. producers
Solution: Animals cannot make their own food, so they consume other living things and are called consumers.
Q7 — Ecosystems · medium · theory
Tiny living things like bacteria and fungi that break down dead plants and animals are called:
A. hunters
B. producers
C. predators
D. decomposers ✓ Correct
Solution: Decomposers break down dead matter and return nutrients to the soil.
Q8 — Ecosystems · medium · theory
The natural place where a plant or animal lives is called its:
A. habitat ✓ Correct
B. factory
C. market
D. hospital
Solution: A habitat is the natural home where a living thing lives, such as a pond for a fish.
Q9 — Ecosystems · hard · theory
Why are decomposers important in an ecosystem?
A. They stop plants from growing
B. They eat all the green plants
C. They break down dead things and return nutrients to the soil ✓ Correct
D. They make the soil dirty and useless
Solution: Decomposers recycle nutrients from dead matter back into the soil so new plants can grow.
Q10 — Ecosystems · hard · theory
In a grassland, all the grass suddenly dies. What will most likely happen to the deer that eat the grass?
A. Their number will fall because they have less food ✓ Correct
B. Nothing at all will change
C. They will turn into plants
D. They will get much more food
Solution: With no grass to eat, the plant-eating deer have less food, so their numbers fall.