Ecosystem Class 6 Science Note

 

Chapter: Ecosystem

Remaining question/answers

Page no. 162

10.   Write any two differences between the biotic components shown below.

Fig(a): Butterfly	Fig(b): Snake
i) Butterfly is invertebrate.	i) Snake is vertebrate.
ii) Butterfly has wings to fly.	ii) Snake crawls on land.

11. Cow and buffalo are called consumers. Why?
Cow and buffalo are called consumers because they cannot make their own food. They eat plants to get energy.

12. What is a habitat and why is it important for organisms?
A habitat is the natural home of an organism. It is important because it provides food, water, shelter, and a suitable environment for survival.

13. Why is mushroom called a decomposer? Why is it important in an ecosystem?
Mushroom is called a decomposer because it breaks down dead plants and animals.
It is important because it returns nutrients to the soil and keeps the environment clean.

14. Write two differences between an aquatic ecosystem and terrestrial ecosystem.

Aquatic ecosystem	Terrestrial ecosystem
i) The ecosystem that exists in water is called aquatic ecosystem.	i) The ecosystem that exists on land is called terrestrial ecosystem.
ii) It includes fresh water ecosystem and marine ecosystem.	ii) It includes grassland ecosystem, forest ecosystem, etc.

15. What is the importance of conserving and protecting ecosystem?
It is important to protect ecosystems to maintain balance in nature, protect plants and animals, and ensure resources for future generations.

16. Define secondary consumers. Why is tiger called tertiary consumer?
Secondary consumers are animals that eat primary consumers (herbivores).
Tiger is called a tertiary consumer because it eats both primary consumers and secondary consumers.

 

Long questions

2. Study the given figure and answer to the following questions.
a) Tiger           b) Grass           c) Deer            d) Mushroom
i) Identify producer and primary consumer.
Producer: Fig(b) à Grass
Primary consumer: Fig(c) à Deer
ii) Identify tertiary consumer in the above figures. Also, write down the reason.
In above figures, Fig(a):Tiger is a tertiary consumer because it eats both primary consumers and secondary consumers.
iii) What happens in the ecosystem if the number of organism shown in fig(c) decreases?
If the number of fig(c):deer decreases, predators will have less food and plant growth will increase.

4. Write any two differences between:
a) Producers and Consumers

Producers	Consumers
i) They can prepare their own food using sunlight.	i) They cannot prepare their own food.
ii) For example: green plants	ii) For example: animals

b) Primary consumers and Tertiary consumers

Primary consumers	Tertiary consumers
i) They eat producers (plants).	i) They eat primary and secondary consumers.
ii) For example: deer, cow, etc.	ii) For example: tiger, snake, etc.

c) Consumers and Decomposers

Consumers	Decomposers
i) They eat plants or animals.	i) They break down dead plants and animals.
ii) For example: cow, lion, etc.	ii) For example: mushroom, bacteria, etc.