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Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

Q1: Multiple Choice Questions (MCQs).

(i) Which of the following is a biotic component of an ecosystem?
(a) Water
(b) Air
(c) Plants
(d) Soil

Ans: (c)
Plants are a biotic component of an ecosystem as they are living organisms that make up a part of the ecosystem.
Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

(ii) What do we call the process by which plants produce their food?
(a) Respiration
(b) Photosynthesis
(c) Decomposition
(d) Transpiration

Ans: (b)
Photosynthesis is the process by which plants produce their food using sunlight, water, and carbon dioxide.
Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

(iii) Which of the following is an example of a decomposer in an ecosystem?
(a) Deer
(b) Lion
(c) Bacteria
(d) Grass

Ans: (c)
Bacteria are decomposers in an ecosystem as they help break down dead plants and animals, returning nutrients to the soil.

(iv) What is the main source of energy in an ecosystem?
(a) Wind
(b) Sun
(c) Water
(d) Soil

Ans: (b)
The sun is the main source of energy in an ecosystem, as it provides the energy needed for plants to carry out photosynthesis.

(v) What do we call the organisms that eat plants for their food?
(a) Carnivores
(b) Herbivores
(c) Omnivores
(d) Decomposers

Ans: (b)
Herbivores are organisms that eat plants for their food, such as deer, rabbits, and cows.
Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

Q2: Fill in the Blanks.

(i) The __________ refers to all the living organisms and non-living components in a specific area.
Ans: 
ecosystem
An ecosystem includes all the plants, animals, and microorganisms in an area, along with the non-living factors like soil, water, and air.

(ii) __________ is the process by which green plants make their food using sunlight, carbon dioxide, and water.
Ans:
Photosynthesis
During photosynthesis, plants use sunlight energy to convert carbon dioxide and water into glucose and oxygen.

(iii) The role of an organism in an ecosystem, including its relationships with other organisms, is called its __________.
Ans:
ecological niche
An ecological niche refers to an organism's specific role and position in its environment, including its interactions with other organisms.

(iv) The place where an organism lives and finds its food is called its __________.
Ans:
habitat
A habitat provides the necessary resources and conditions for an organism to survive, such as food, water, shelter, and suitable living conditions.

(v) Decomposers play a vital role in the ecosystem by __________.
Ans: 
breaking down dead organisms and organic matter
Decomposers, like fungi and bacteria, break down dead plants, animals, and other organic materials, releasing nutrients back into the ecosystem.
Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

Q3: True or False.

(i) All living organisms depend on each other for their survival in an ecosystem.
(ii) Photosynthesis is the process by which animals produce their own food.
(iii) Decomposers help in recycling nutrients by breaking down dead organisms.
(iv) All herbivores are primary consumers in a food chain.
(v) Ecosystems remain constant and do not change over time.

Ans:
(i)True:
In an ecosystem, different organisms are interconnected, and their survival depends on the availability and interactions of other organisms.
(ii) False: Photosynthesis is a process specific to plants, where they produce their food using sunlight energy, carbon dioxide, and water.
(iii) True: Decomposers play a crucial role in the ecosystem by breaking down dead organisms and returning nutrients to the soil, which can be used by plants again.
(iv) True: Herbivores are animals that eat only plants, and they occupy the position of primary consumers in a food chain.
(v) False: Ecosystems are dynamic and can change over time due to natural processes or human activities.

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FAQs on Ecosystem: Interdependence in Nature - 1 Class 6 Worksheet Science

1. What is an ecosystem?
Ans. An ecosystem is a community of living organisms (plants, animals, and microorganisms) that interact with each other and their environment. It includes both the biotic (living) and abiotic (non-living) components that influence each other.
2. How do organisms in an ecosystem depend on each other?
Ans. Organisms in an ecosystem depend on each other for various reasons. For example, plants provide oxygen and food sources for animals, while animals help in pollination and seed dispersal for plants. Additionally, decomposers break down dead organisms and recycle nutrients back into the ecosystem.
3. What is the importance of interdependence in nature?
Ans. Interdependence in nature is crucial for the functioning and balance of ecosystems. It ensures the flow of energy and nutrients, helps in maintaining biodiversity, and supports the survival and reproduction of different species. Without interdependence, ecosystems would become unstable and unable to sustain life.
4. How do human activities affect the interdependence in nature?
Ans. Human activities can significantly impact interdependence in nature. Deforestation, pollution, overfishing, and habitat destruction disrupt the delicate balance of ecosystems. This can lead to the extinction of species, loss of biodiversity, and disruption of important ecological processes.
5. What are the consequences of disrupting interdependence in nature?
Ans. Disrupting interdependence in nature can have severe consequences. It can lead to imbalances in population sizes, loss of biodiversity, and the collapse of ecosystems. This can ultimately affect human well-being, as we rely on healthy ecosystems for resources such as food, water, and clean air. It is essential to understand and protect the interdependence in nature to ensure the sustainability of our planet.
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