Ecosystem Notes Class 11 – Important Short Questions Solved
🌍 Chapter 26 – Some Major Ecosystems
✍️ Short Questions with Answers (Class 11 Biology)
1. Difference between Climate and Weather
Weather: Short-term atmospheric conditions (daily changes).
Climate: Long-term average weather of a region (over many years).
2. Define Productivity of an Ecosystem
Productivity is the rate at which plants produce organic matter (biomass) in an ecosystem through photosynthesis.
3. Compare Limnetic Zone with Profundal Zone
Limnetic Zone: Upper, well-lit water zone; supports plankton and fish.
Profundal Zone: Deep, dark zone; lacks light and has less life.
4. Adaptations in Organisms for Terrestrial Ecosystem
- Water conservation (thick skin, waxy leaves)
- Strong support structures (bones, stems)
- Efficient respiration (lungs)
- Protection from temperature changes
5. Enlist Ecosystems in Pakistan
- Desert ecosystem
- Mountain ecosystem
- Grassland ecosystem
- Forest ecosystem
- Marine ecosystem
6. Difference between Alpine and Boreal Forest
Alpine Forest: Found at high altitudes, cold and snowy.
Boreal Forest (Taiga): Found in northern regions, dominated by coniferous trees.
7. What do you mean by Taiga?
Taiga is a cold forest ecosystem mainly consisting of coniferous trees like pine and fir.
8. Difference between Prairies and Savanna
Prairies: Temperate grasslands with moderate rainfall.
Savanna: Tropical grasslands with scattered trees and seasonal rainfall.
9. Soil Condition in Grassland Ecosystem
Soil is fertile, rich in organic matter (humus) and suitable for agriculture.
10. Where is Desert Ecosystem Located in Pakistan?
Desert ecosystems are found in Thar, Cholistan, and Thal deserts.
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