Advanced Study Material for Class 12 Biology: Chapter 16 Environmental Issues
Access comprehensive study materials and useful resources for Chapter 16 Environmental Issues using the CBSE Class 12 Biology Environmental Issues Key Points. Designed to align with the 2026-27 CBSE academic guidelines, these advanced resources help Class 12 Biology students reinforce core concepts beyond standard textbooks.
Practice Class 12 Biology Resources: Chapter 16 Environmental Issues
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CHAPTER: 16 ENVIRONMENTAL ISSUES (KEY POINTS)
Review of Key Terms and Concepts [1 Mark]
Answer:
The table below summarizes the key terms and their explanations for Chapter 16 (Environmental Issues).
| S.No | Term | Explanation |
|---|---|---|
| 1 | DU | Dobson unit |
| 2 | CPCB | Central Pollution Control Board |
| 3 | BOD | Biological Oxygen Demand |
| 4 | CNG | Compressed Natural Gas |
| 5 | FOAM | Friends of Arcata Marsh |
| 6 | JFM | Joint Forest Management |
| 7 | PIL | Public interest litigation |
| 8 | CPCB | Central pollution control board |
| 9 | Air prevention & control | 1981 Protect & control of air pollution act |
| 10 | Environmental(protection) | 1986 Protect & control the quality of environment act |
| 11 | Water (prevention & control of pollution) act | 1974 Protect & control of water pollution to safe guard water resources |
| 12 | Chipkho movement | 1974 protection of forest |
| 13 | Montreal protocol | 1989 Control on emission of ozone depleting substances |
| 14 | Pollution | Undesirable changes in physical/chemical/biological characteristics of air/water/land |
| 15 | Pollutants | Agents which cause pollution |
| 16 | Slash and Burn Agriculture (Jhum Cultivation) | Cutting down trees and burn the plant remains. Ash is used as a fertiliser and the land is then used for farming or cattle grazing. |
| 17 | Algal Bloom | excessive growth of algae due to presence of nutrient in water |
| 18 | Plankton | Free floating aquatic organisms. |
| 19 | Bio magnification | increase in concentration of toxic substances at successive trophic levels. |
| 20 | Eutrophication | Natural aging of lake by nutrient enrichment |
| 21 | Snow blindness | Inflammation of cornea due to high dose of UV-B radiation |
Teacher's Note:
a) Core concepts include vital environmental terminologies, legislative acts, and ecological phenomena.
b) Avoid confusing biological magnification with eutrophication when answering questions.
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Biology Class 12 Exam Resources: Chapter 16 Environmental Issues
Quick Revision Material for Chapter 16 Environmental Issues
Explore essential learning tools for Class 12 Biology Chapter 16 Environmental Issues. This curated collection features in-depth notes and targeted practice questions built around the active 2026 curriculum to streamline your daily revision.
Expert Notes and Solved Exam Questions
Each resource draws directly from authorized textbooks to maintain academic accuracy. Evaluating solved examples allows Class 12 students to master the formal presentation and answer-writing standards expected in upcoming school exams.
Additional Study Resources for Class 12
For peak performance in upcoming evaluations, integrate official Biology sample papers directly into your study schedule. Follow up your revision by attempting online MCQ tests for Chapter 16 Environmental Issues to refine calculation speed and precision.
FAQs
Our advanced study package for Chapter 16 Environmental Issues includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 12 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Chapter 16 Environmental Issues act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 12 Biology resources for lesson planning as they are in simple language and have lot of solved examples.
Yes, You can download the complete, mobile-friendly PDF of the Biology Chapter 16 Environmental Issues advanced resources for free.
Yes, our subject matter experts have updated the Chapter 16 Environmental Issues material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.