Place Nepal's forest types in their altitude bands, name the invasive banmara weeds and their harm, order the stages of a hydrosere and a xerosere, and match hydrophyte and xerophyte adaptations.
Unit 3 carries 4 of the 40 botany marks; with three chapters sharing them, this one averages a little over one mark (MEC publishes weights by unit, not by chapter). The MEC scope line reads: "Vegetation and adaptation: Forest types of Nepal, Biological invasion, Ecological succession, Concept of ecological adaptation (hydrosere and xerosere)." Expect:
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See the plansEcology and Vegetation: Unit Map and Reading Order
What the Ecology and vegetation unit covers, how many questions it carries, and the order to read its three chapter notes in.
Botany Rapid Revision — Cycles, Pigments & Pathways
Photosynthesis and respiration accounting, plant hormones, life-cycle patterns and the classification characters that carry the 40-mark Botany block.
Genetics Ratios & Cell Division Cheat Sheet
Mendelian ratios, mitosis vs meiosis, and DNA base-pairing rules in one page.
Carbohydrates, Lipids and Minerals: Sugars, Fats and What Soil Supplies
Sort sugars by size, linkage and reducing power, tell starch from cellulose from chitin, classify lipids and fatty acids, and match each plant mineral to its role and deficiency symptom.