Learn
Games

5.14 - Exercises

Interactive Audio Lesson

Listen to a student-teacher conversation explaining the topic in a relatable way.

Understanding Deforestation

Unlock Audio Lesson

Signup and Enroll to the course for listening the Audio Lesson

Teacher
Teacher

Today, we will explore deforestation. Can anyone tell me what deforestation means?

Student 1
Student 1

Isn't it when trees are cut down or cleared?

Teacher
Teacher

Exactly! Deforestation refers to the clearing of forests to utilize that land for other purposes, like agriculture or urban development. Let's remember it as 'C.U.T.' meaning 'Clearing for Urban and Agricultural use.' What are some of the causes of deforestation?

Student 2
Student 2

Natural causes like forest fires, also droughts, I think?

Student 3
Student 3

And people cutting down trees, right?

Teacher
Teacher

Yes! Both natural causes like droughts and human activities such as industry and urbanization contribute. Let's delve deeper into the consequences of deforestation next.

Teacher
Teacher

In summary, deforestation impacts our environment significantly. Remember: C.U.T. for the causes.

Consequences of Deforestation

Unlock Audio Lesson

Signup and Enroll to the course for listening the Audio Lesson

Teacher
Teacher

How does deforestation impact our planet?

Student 1
Student 1

Um, it might increase pollution?

Teacher
Teacher

Correct! It does increase pollution levels and disrupts the balance in nature. By cutting down trees, we have less carbon dioxide absorption. What happens with more carbon dioxide?

Student 4
Student 4

That could lead to global warming!

Teacher
Teacher

Right! So remember, deforestation leads to G.L.O.W. – Global warming, Lower groundwater, and Output of more carbon.

Student 2
Student 2

What about the soil?

Teacher
Teacher

Great question! Deforestation leads to soil erosion, reducing soil fertility and causing desertification. Now, let's summarize.

Teacher
Teacher

So keep in mind—D.I.E.: Deforestation leads to Increased temperatures, Erosion, and loss of biodiversity.

Conservation Efforts

Unlock Audio Lesson

Signup and Enroll to the course for listening the Audio Lesson

Teacher
Teacher

What can we do to help preserve our plants and animals?

Student 3
Student 3

We can protect wildlife sanctuaries and national parks!

Teacher
Teacher

Absolutely! Wildlife sanctuaries protect animals from disturbance, and national parks preserve ecosystems. Together, these areas help conserve biodiversity. Do you know any other conservation areas?

Student 1
Student 1

There's biosphere reserves too, right?

Teacher
Teacher

Yes! Biosphere reserves are dedicated to conserving biodiversity while promoting cultural and traditional lifestyles. Remember: P.E.A.C.E. – Protected Ecosystems Assist Conservation Efforts.

Student 2
Student 2

Can we do anything in our community?

Teacher
Teacher

Certainly! We can participate in local reforestation projects or initiate recycling programs. For our summary: Remember, conservation means 'SAVING': Sustainable Actions for Vital and Important Natural Growth.

Introduction & Overview

Read a summary of the section's main ideas. Choose from Basic, Medium, or Detailed.

Quick Overview

This section covers the importance of conservation of plants and animals, the impacts of deforestation, and the significance of preserving biodiversity.

Standard

Focusing on conservation of flora and fauna, the section discusses deforestation's causes and consequences, the necessity of wildlife sanctuaries and national parks, and the importance of reforestation. It encourages students to engage with practical exercises and reflect on their responsibility towards nature.

Detailed

Youtube Videos

Conservation of Plants and Animals - Introduction | Don't Memorise
Conservation of Plants and Animals - Introduction | Don't Memorise
class 8 ch 7 Living science Conservation of plants and animals Book exercise
class 8 ch 7 Living science Conservation of plants and animals Book exercise
Grade 8 | Science | Conservation of Plants and Animals | Free Tutorial | CBSE | ICSE | State Board
Grade 8 | Science | Conservation of Plants and Animals | Free Tutorial | CBSE | ICSE | State Board
NCERT Class 8 Science Chapter 7: Conservation of Plants and Animals (NSO/NSTSE) | English
NCERT Class 8 Science Chapter 7: Conservation of Plants and Animals (NSO/NSTSE) | English
Conservation of Plants and Animals Class 8 Science - Flora and Fauna
Conservation of Plants and Animals Class 8 Science - Flora and Fauna
Conservation of Plants and Animals for Class 8 Science - Deforestation
Conservation of Plants and Animals for Class 8 Science - Deforestation
Conservation of Forest & Wild life | Grade 8 || Don't Memorise
Conservation of Forest & Wild life | Grade 8 || Don't Memorise
Conservation of Plants and Animals | Full Chapter Revision under 30 mins | Class 8 Science
Conservation of Plants and Animals | Full Chapter Revision under 30 mins | Class 8 Science
NCERT Solutions - Conservation of Plants and Animal | Class 8 - Science - Chapter 5
NCERT Solutions - Conservation of Plants and Animal | Class 8 - Science - Chapter 5

Audio Book

Dive deep into the subject with an immersive audiobook experience.

Fill in the Blanks

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

1.Fill in the blanks.
(a)A place where animals are protected in their natural habitat is called .
(b)Species found only in a particular area is known as .
(c)Migratory birds fly to far away places because of changes.

Detailed Explanation

This exercise is designed to test students' understanding of key terms related to wildlife conservation. Students need to fill in the blanks with appropriate terms or concepts based on what they have learned. Some examples are:
- For (a), students could write 'wildlife sanctuary'.
- For (b), the term might be 'endemic species'.
- For (c), they could mention 'climatic'. This reinforces vocabulary and reinforces concepts about habitats, species, and migration.

Examples & Analogies

Imagine you are an explorer in a dense forest. You come across a sign indicating 'Wildlife Sanctuary'. You learn this is a protected area allowing animals to live freely. Similarly, if you discover a unique plant species that only grows there and nowhere else, you'd describe it as 'endemic' to that forest. This activity helps relate these terms to a real-world context.

Differentiate Between Terms

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

2.Differentiate between the following.
(a)Wildlife sanctuary and biosphere reserve
(b)Zoo and wildlife sanctuary
(c)Endangered and extinct species
(d)Flora and fauna

Detailed Explanation

This task encourages critical thinking as students analyze differences between terms related to conservation. For example:
- A 'wildlife sanctuary' is primarily focused on protecting animals in their habitats, while a 'biosphere reserve' encompasses broader conservation goals, including ecosystems and human culture.
- A 'zoo' often keeps animals in enclosures for public view, while a 'wildlife sanctuary' allows animals to live in more natural conditions. Students should explain each pair, enhancing their understanding of different habitats and conservation efforts.

Examples & Analogies

Consider a zoo as a pet store where animals are kept as exhibits. In contrast, imagine a wildlife sanctuary as a refuge for animals, similar to rescuing a stray dog and letting it roam freely in a safe park. This comparison helps students understand the nuances of animal protection habitats.

Effects of Deforestation

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

3.Discuss the effects of deforestation on the following.
(a)Wild animals
(b)Environment
(c)Villages (Rural areas)
(d)Cities (Urban areas)
(e)Earth
(f)The next generation

Detailed Explanation

In this activity, students are prompted to explore and articulate the many consequences of deforestation across various aspects of life. For instance:
- Wild animals may face habitat loss, leading to decreased populations or extinction.
- Environmental impacts include soil erosion, altered water cycles, and increased carbon emissions.
- For rural communities, resources like timber may dwindle, affecting their livelihoods. This activity encourages comprehensive understanding and discussion among students about the interconnectedness of ecosystems.

Examples & Analogies

Picture a tree as a family's home. Removing it means the family (wildlife) has nowhere to live, and they must either relocate or face peril. This illustrates how deforestation impacts not only animals but entire communities and ecosystems.

What Will Happen If?

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

4.What will happen if.
(a)we go on cutting trees.
(b)the habitat of an animal is disturbed.
(c)the top layer of soil is exposed.

Detailed Explanation

This section encourages students to predict consequences based on scenarios that can occur due to human actions. For example:
- Continuous tree cutting would lead to loss of biodiversity and increased greenhouse gases.
- Disturbance of animal habitats can lead to decreased species populations and disruption of ecological balance.
- Exposed soil can become degraded, leading to erosion and loss of fertility, which can affect agriculture and sustainability.

Examples & Analogies

Imagine playing with building blocks and removing the bottom layers; eventually, your entire structure collapses. Similarly, cutting down trees removes the foundation of ecosystems. Teaching students the long-term impacts of their actions can make these potential outcomes relatable.

Short Answers to Key Questions

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

5.Answer in brief.
(a)Why should we conserve biodiversity?
(b)Protected forests are also not completely safe for wild animals. Why?
(c)Some tribals depend on the jungle. How?
(d)What are the causes and consequences of deforestation?
(e)What is Red Data Book?
(f)What do you understand by the term migration?

Detailed Explanation

This question set aims to gauge students' grasp of important concepts in biodiversity and conservation. Brief answers may include:
- Conserving biodiversity is essential for ecological balance and human survival.
- Protected forests can still be threatened by illegal activities or human encroachment.
- Tribes often rely on the jungle for resources such as food, medicine, and shelter. Students can use this to reflect on human reliance on natural systems and the importance of preserving biodiversity.

Examples & Analogies

Think of biodiversity as a library where each book represents a species. If we remove books (species), the library becomes less valuable, lacking knowledge and diversity. Children can relate as it emphasizes the need for every species to play its role in maintaining a healthy environment.

Justification of Deforestation

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

6.In order to meet the ever-increasing demand in factories and for shelter, trees are being continually cut. Is it justified to cut trees for such projects? Discuss and prepare a brief report.

Detailed Explanation

This exercise prompts students to engage in critical thinking about the justification of deforestation for economic activities. While development is necessary, students must debate the environmental consequences and essential roles that forests play in maintaining biodiversity and ecological health. An ideal report would touch on sustainable practices that balance development and conservation.

Examples & Analogies

Imagine using a bank's money – if you keep spending without saving or replenishing, you’ll end up broke. Similarly, if we continuously cut down forests without reforestation, we risk depleting natural resources. This analogy helps students understand the urgency of sustainable practices.

Personal Contributions to Conservation

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

7.How can you contribute to the maintenance of green wealth of your locality? Make a list of actions to be taken by you.

Detailed Explanation

This encourages students to take personal accountability in environmental conservation. Ideas could include:
- Planting trees in their community.
- Campaigning for recycling practices in their schools.
- Encouraging friends and family to adopt sustainable habits. This builds a sense of ownership and responsibility towards environmental stewardship.

Examples & Analogies

Consider a garden where each person tends to their plants. If everyone contributes, the garden thrives, and there’s beauty and food for everyone. This analogy highlights that individual efforts can lead to significant collective change in environmental impact.

Understanding Deforestation and Rainfall

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

8.Explain how deforestation leads to reduced rainfall.

Detailed Explanation

Deforestation impacts the water cycle by reducing the number of trees that release water vapor into the atmosphere through transpiration. Fewer trees mean less moisture, which translates to reduced cloud formation and, ultimately, lower rainfall levels. Understanding this interconnected relationship is critical in recognizing the importance of trees in climate regulation.

Examples & Analogies

Think of trees as sponges soaking up and releasing water. If you remove sponges from a bucket, the amount of water that can sit and evaporate decreases. This analogy simplifies the concept of how deforestation can directly impact local and global climates.

Importance of Saving Paper

Unlock Audio Book

Signup and Enroll to the course for listening the Audio Book

10.Why should paper be saved? Prepare a list of ways by which you can save paper.

Detailed Explanation

This section emphasizes the environmental benefits of reducing paper consumption, which directly correlates to less tree cutting. Suggestions for saving paper include:
- Using both sides of paper.
- Reusing scrap paper.
- Opting for digital documents where possible. This practice reinforces sustainable habits among students, showing them how simple adjustments can make a substantial difference.

Examples & Analogies

Think about the last time you saved a couple of coins to buy a treat. If everyone saves just a small amount, collectively, it adds up to a significant number. Saving paper works the same way; small efforts accumulate into a major impact, preserving trees and reducing waste.

Definitions & Key Concepts

Learn essential terms and foundational ideas that form the basis of the topic.

Key Concepts

  • Conservation Areas: Designated locations protecting biodiversity.

  • Deforestation: Removal of forests causing ecological imbalance.

  • Biodiversity: Variety and variability of life forms within ecosystems.

  • Endangered Species: Species at risk of extinction needing protection.

Examples & Real-Life Applications

See how the concepts apply in real-world scenarios to understand their practical implications.

Examples

  • Examples of biodiverse areas include wildlife sanctuaries like Kaziranga National Park.

  • Reforestation efforts can include planting native tree species in deforested areas.

Memory Aids

Use mnemonics, acronyms, or visual cues to help remember key information more easily.

🎵 Rhymes Time

  • This is the forest, it has much to show, cut down the trees, and see nature's woe.

📖 Fascinating Stories

  • Once there was a green forest filled with life. As trees fell one by one, the animals cried, 'Where will we go?' Their homes disappeared with each tree that fell.

🧠 Other Memory Gems

  • P.E.A.C.E. for conservation: Preserve, Educate, Act, Conserve, Engage.

🎯 Super Acronyms

G.L.O.W. helps remember the effects of Deforestation - Global warming, Lower groundwater, Output of more carbon.

Flash Cards

Review key concepts with flashcards.

Glossary of Terms

Review the Definitions for terms.

  • Term: Biodiversity

    Definition:

    The variety of living organisms in a specific area.

  • Term: Biosphere Reserve

    Definition:

    Large protected areas meant for conservation of wildlife and resources.

  • Term: Deforestation

    Definition:

    The clearing of forests for other uses.

  • Term: Ecosystem

    Definition:

    A community of living organisms and their physical environment.

  • Term: Endangered Species

    Definition:

    Species at risk of extinction due to habitat loss or other threats.

  • Term: Reforestation

    Definition:

    Planting trees in an area where the forest has been cut down.