Why is it said that pollution control is important? - Science and Technology 2

Answer in Brief

Why is it said that pollution control is important?



  1. Pollution affects the life of human beings and other living organisms. Also, it affects other natural elements like air, soil, water, etc.
  2. Persistence of pollutants in nature has adverse effects on human health and environment.
  3. Anthropogenic activities like mining, etc., have a negative impact on the ecosystem, biodiversity, natural resources and habitats.
  4. Pollution leads to loss of biodiversity, global warming, reduction in the number of plant and animal species, etc.
  5. Human health is largely impacted by degradation of the environment. Reduction in quality of air, water and other resources poses a threat to human life.
    Hence, pollution control is extremely important.
Concept: Ecosystem
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Chapter 4: Environmental Management - Answer the following questions


SCERT Maharashtra Question Bank 10th Standard SSC Science and Technology 2 Maharashtra State Board
Chapter 4 Environmental Management
Answer the following questions | Q 5


Describe the advantages for keeping the ecosystems healthy

List two natural ecosystems.

What is an ecosystem ?

Define the following term and give one example:


An ecosystem includes ______.

Which of the following act as decomposers in an ecosystem?
(a) Lactobacillus bacteria
(b) Cyanobacteria
(c) Putrefying bacteria
(d) Rhizobium bacteria

Put a tick mark (✓) against the correct alternative in the following statement:

The term “ecosystem” is derived from the Greek word “Oikos” meaning.

Match the items in Column I with as many items as possible in Column II.

  column I Column II
1 Grass (i) Carnivore
2 Deer (ii) Decomposers
3 cobra (iii) Primary Consumer
4 Vulture (iv) Autotroph
5 Microbes (v) Scavenger

Reorganize the following food chain. Describe the ecosystem to which it belongs. Grasshopper – Snake – Paddy field – Eagle – Frog.

What do we learn from the story of Jadav Molai Peyang?

What is shown in the picture? Write name and trophic level of each component.

What are the meanings of following symbols? Write your role accordingly?

Give my information

Describe the following pictures

Define the following term and give two examples.


Answer the following question.
Define an ecosystem. Draw a block diagram to show the flow of energy in an ecosystem.

Answer the following question.
Write the different components of a lac-operon in E. coli. Explain its expression while in an ’open’ state.

Define the term 'ecosystem'.

Name two major types of ecosystems.

Give two features of forest ecosystem.

List the characteristic flora of the coniferous forests?

What is a forest biome?

Differentiate between terrestrial and aquatic ecosystem.

A pond/ lake is

Biome is

Annual rainfall in the area of deciduous forest is

How do gymnosperms and angiosperms differ?

The second trophic level in a lake is ________________.

What is primary productivity?

Define decomposition.

Producers are also called autotrophs.

Write a paragraph on the functions of an ecosystem.

____________ is an organic compound of abiotic components.

Environment is a broad concept.

What does ecosystem mean?

What is indicated by this symbol?

Give scientific reason.

The various food chains in the ecosystem maintain the environmental balance.

Give scientific reason.

Without the existence of nature, human existence is almost impossible.

Which are two components affecting the environment? State two examples of each.

Complete food chain.

Grass → _________ → Frog → ________ → Eagle

The Pacific ocean is an example of an marine ecosystem.

Define ecosystem.

What are the two types of ecosystems?

Identify the similar characteristics of: Lantana, African catfish and Eichhomia.

In a very short period of time, a threat to the ecosystem is caused due to the loss of ______ species.

In which one of the following organisms does the body fluid enter through nephrostome?

Arrange the following in the proper order of hydrarch succession and choose the correct option.

  1. Scrub stage
  2. Marsh - meadow stage
  3. Submerged free floating plant stage
  4. Phytoplankton
  5. Forest
  6. Submerged plant stage
  7. Reed swamp stage

Which one of the following is NOT a natural aquatic ecosystem?

Every food chain in the ecosystem begins with ______ which are the original source of food.

Among the following choose the correct option which contains only biodegradable items?

  1. Wood, paper, PVC
  2. Paper, seeds, detergent,
  3. Paper, animal excreta, wood
  4. Wool, leaves, paper

Which among the following is a correct full form for DDT?

An ecosystem is represented in the figure given above. This ecosystem will be self-sustaining if ______.

The chain of transformation of energy from one group of organisms to another through various trophic levels is called a ______.

The study of the sources, development, and history of a word is called ______.

A healthy ecosystem provides ______.

Explain the following term


Explain the following term


Explain the following term


______ are found both on land and water.

Consumers are those that depend on directly (or) indirectly are called ______.

The ecosystem in water is called ______ ecosystem.


Natural terrestrial ecosystem: Forest:: Artificial terrestrial ecosystem: ______.

Define – Aquarium.

An example for artificial aquatic ecosystem is ______.

Ecosystems created and maintained by humans are called?

Match the Following:

1. Edaphic factor a. Primary consumer
2. Snails b. Non biodegradable
3. Crow c. Decomposers
4. Earthworms d. Oranic matter in soil
5. Hazardous chemicals e. Omnivores

Give two examples of artificial terrestrial ecosystems?

An ecosystem includes

Cooperation of the two photosystems of the chloroplast is required for:

Complete the following chart related to the components of the Ecosystem.

Define the term:

Net Primary Productivity

Which are the major producers in an aquatic ecosystem?

When was the concept of ecosystem services given? By whom was it given?

Which is the most important service provided by environment?

In an ecosystem, bacteria are considered as______.

Describe the functions of the ecosystem.


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