Summary Class 8-10 NCERT science Easy notes(Don't Miss!)

Improvement in Food Resources
Main Concepts
Crop Production- It contains improving yield and quantity. Improving
yield means if we get 20quintal rice from 1 acre land so when we
improve it we get increased amount of rice from that same 1 acre land.
Animal Husbandry- It contains cattle(cows, buffaloes), poultry(hen),
fisheries.
Need- The need of crops in increasing due to the increase in the
population of the world.

10 Key Facts
 Crop varieties: Hybrid (high yield) + Improved (disease
resistant)
 Nutrient management: Manure (organic) vs Fertilizers
(chemical)
 Irrigation: Drip, sprinkler (water saving)
 Cropping patterns: Mixed, Intercrop, Crop rotation
 Pest control: Weedicides, Pesticides, Bio-agents
 Storage: Silos, Granaries (prevent spoilage)
 Cattle breeds: Indigenous (Sahiwal) vs Exotic (Jersey)
 Poultry: Broiler (meat) vs Layer (eggs)
 Fish farming: Marine + Inland + Aquaculture
 Bee-keeping: Honey + Wax (Apiculture)

6 Exam MCQs
1. High yield crops: (a) Hybrid ✓ (b) Local
2. Organic nutrients: (a) Fertilizer (b) Manure ✓
3. Water saving irrigation: (a) Flood (b) Drip ✓
4. Crop rotation purpose: (a) Soil fertility ✓ (b) Water saving
5. Egg type poultry: (a) Broiler (b) Layer ✓
6. Milk exotic breed: (a) Jersey ✓ (b) Sahiwal

Quick Revision
 Trick: Crops(Hybrid+Rotation) Animals(Cattle+Poultry+Fish)
 Manure=Organic Fertilizer=Chemical