Full Chapter Notes
Short Question
MCQ’s
Class 12th Biology Chapter – “Some Major Ecosystems” covers significant ecosystems that play crucial roles in the environment. Here’s a concise overview:
- Tropical Rainforest: High biodiversity, warm temperatures, and heavy rainfall. They support numerous plant and animal species and are vital for global oxygen and carbon cycling.
- Deserts: Characterized by low precipitation and extreme temperatures. Flora and fauna have adaptations for water conservation. They are important for studying survival strategies.
- Grasslands: Dominated by grasses with few trees. These ecosystems support grazing animals and are essential for agriculture. They experience seasonal variations in temperature and rainfall.
- Temperate Forests: Comprising deciduous and coniferous trees, they experience four distinct seasons. These forests provide habitat for diverse wildlife and are crucial for timber production.
- Freshwater Ecosystems: Includes lakes, rivers, and wetlands. They are essential for drinking water, irrigation, and supporting biodiversity.
- Marine Ecosystems: Comprising oceans and coral reefs, they are the largest ecosystems on Earth. Coral reefs are biodiversity hotspots and provide essential resources for many marine species.
Each ecosystem is vital for ecological balance, supporting various life forms and contributing to human needs. Understanding these ecosystems is critical for conservation and sustainable management.