What is Conservation of Plants and Animals Class 8 Notes Explained

Understanding Conservation of Plants and Animals

Conservation means the careful use and protection of natural resources to prevent their loss or destruction. In the context of plants and animals, it involves efforts to preserve species and their habitats.

Why is conservation important?

• Maintains ecological balance
• Protects endangered species
• Ensures resources for future generations
• Supports human life through ecosystem services

Class 8 NCERT notes explain that without conservation, many species may become extinct, disrupting food chains and the environment.

Major Causes of Plant and Animal Endangerment

Several factors threaten the survival of plants and animals:

• Habitat Destruction: Cutting down forests for agriculture or construction reduces living space.
• Pollution: Chemicals and waste harm species directly or contaminate their food.
• Poaching and Hunting: Illegal killing for fur, medicine, or trophies.
• Climate Change: Alters habitats and food availability.
• Invasive Species: Non-native plants or animals outcompete local species.

Understanding these causes helps Class 8 students grasp why conservation efforts are necessary.

Methods of Conservation: In-Situ and Ex-Situ

Conservation methods are broadly divided into two types:

1. In-Situ Conservation: Protecting plants and animals in their natural habitats.

• Examples: National parks, wildlife sanctuaries, biosphere reserves

2. Ex-Situ Conservation: Protecting species outside their natural habitats.

• Examples: Zoos, botanical gardens, seed banks

Class 8 NCERT highlights both methods as essential for saving biodiversity.

Role of National Parks and Wildlife Sanctuaries

National parks and wildlife sanctuaries are protected areas established to conserve wildlife and plants.

• National Parks: Strictly protected areas where human activity is limited.
• Wildlife Sanctuaries: Allow limited human activity but protect animals.

These areas provide safe habitats and help endangered species recover. For example, Jim Corbett National Park protects tigers, and Gir Forest Sanctuary is home to Asiatic lions.

Students should note these examples from Class 8 NCERT to understand practical conservation.

How Students Can Contribute to Conservation

Even students can play a role in conserving plants and animals:

• Plant trees and protect local green spaces
• Avoid using plastic and reduce pollution
• Spread awareness about endangered species
• Respect wildlife and avoid disturbing natural habitats
• Participate in school or community conservation programs

Class 8 students learning these notes can become young ambassadors for nature conservation.

Worked Example: Calculating Percentage of Forest Cover Lost

Suppose a forest area was 5000 sq km in 2000 and reduced to 4000 sq km in 2010.

Calculate the percentage of forest cover lost.

Solution:

Forest lost = 5000 - 4000 = 1000 sq km

Percentage lost = $\frac{1000}{5000} \times 100 = 20\%$

This simple calculation shows how deforestation affects conservation efforts, a concept useful for Class 8 students.