SSC CGL Biology · Free notes
Ecology and Environment: SSC CGL Biology
Ecology and Environment has 17 questions in the SSC CGL Tier I bank: four from the 2023 shifts, 12 from the 2024 shifts and one from the 2025 shifts. They ask the terms for an ecosystem, a named adaptation or an ecologist with a date, and a few environment facts. One page covers them all, with the decoy SSC sets beside each.
The handout has every subtopic, worked example, formula and trap with answers shown. The formula sheet is the chapter’s formulas and traps alone, on one page.
Subtopic notes
Formula & revision sheet
0 formulas · 3 reference tables · 3 gotchas across all subtopics — the exam-eve cheat-sheet
Formula & revision sheet
0 formulas · 3 reference tables · 3 gotchas across all subtopics — the exam-eve cheat-sheet
Reference tables (3)
Greenhouse gases and threatened species3 rows
| Item | Fact |
|---|---|
| Nitrous oxide | Greenhouse gas |
| Nitric oxide | Not a greenhouse gas |
| Hubbardia heptaneuron | Endangered grassQ |
Watch out for (3)
- Standing crop is not productivity→ Ecosystems and their terms
- Kleptoparasitism is stealing food→ Adaptations, interactions and ecologists
- Nitric and nitrous differ→ Greenhouse gases and threatened species
PYQ weightage by concept
3 concepts · 17 PYQs — where the marks actually sit, so you know what to drill first
PYQ weightage by concept
3 concepts · 17 PYQs — where the marks actually sit, so you know what to drill first
| Concept | PYQs | Share |
|---|---|---|
| Ecosystems and their terms | 7 | 41% |
| Adaptations, interactions and ecologists | 7 | 41% |
| Greenhouse gases and threatened species | 3 | 18% |
Test yourself on a real paper
Sit a past SSC CGL paper, timed and marked the way the exam marks it. You see your score and every answer the moment you finish. Free to start.