Food Production and Animal-Husbandry — Practice Quiz

Nitrogen, Phosphorus, Potassium

Step 1: NPK is a common chemical fertilizer where each letter represents a key nutrient. Step 2: 'N' stands for Nitrogen, essential for leaf growth and green color. Step 3: 'P' stands for Phosphorus, important for root development and flowering. Step 4: 'K' stands for Potassium, crucial for overall plant health and disease resistance. These three macronutrients are needed in large quantities by plants.

Parthenium (Carrot grass)

Step 1: In 1955, India imported wheat from the USA for food security. Step 2: Along with wheat, Parthenium seeds accidentally came to India and spread nationwide. Step 3: Parthenium flowers produce pollen that causes asthma, skin allergies, and other health problems. Step 4: This invasive weed competes with crops and has become a major agricultural and health concern, requiring widespread awareness campaigns for its eradication.

To produce offspring with desired characteristics

Step 1: Artificial insemination involves collecting semen from male animals with superior traits. Step 2: This semen is then artificially introduced into females to achieve controlled breeding. Step 3: The goal is to combine desirable characteristics like high milk production, disease resistance, and better quality. Step 4: This selective breeding improves livestock quality more effectively than natural breeding, helping farmers get better yields and healthier animals.

Meat production

Step 1: In poultry farming, chickens are classified based on their primary purpose. Step 2: Broiler chickens are specifically bred and raised for meat production. Step 3: They are fed high-protein diets to promote rapid growth and are sold when they reach market weight. Step 4: Layer chickens are raised for eggs, while broilers focus on meat - they have different dietary and housing requirements optimized for their specific purpose.