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Home/Notes/Everyday Science — Biology

Board Exam Notes

Everyday Science — Biology Notes

Questions

2 questions per paper

Difficulty

Easy

Importance

Essential for SSC and State Police scoring

Overview

Everyday Science Biology covers the functional mechanisms of human physiology, the nutritional requirements of the body, and basic classification of life forms. It is a high-yield area in competitive exams because questions are fact-based and require high-speed recall of specific nomenclature and biological processes.

Human Body Systems

This subtopic focuses on the primary organ systems, specifically the circulatory, nervous, and endocrine systems. Exam questions prioritize the function of glands, the role of hormones, and the chemical composition of blood.

Endocrine system: Glands like Pituitary are Master Glands
Circulatory: Heart chambers and blood group antigens (A, B, AB, O)
Nervous system: Role of Central Nervous System and neurotransmitters
Excretory: Nephron as the functional unit of the kidney
Respiratory: Hemoglobin's role in oxygen transport

Diseases & Nutrition

This section requires memorizing vitamin deficiencies, pathogens, and the organ systems they target. For competitive exams, link specific symptoms to the corresponding deficiency or pathogen class.

Vitamin A: Night Blindness; Vitamin C: Scurvy; Vitamin D: Rickets
Water-soluble vitamins: B-complex and C
Bacterial vs Viral: Malaria is protozoan, Tuberculosis is bacterial
Macronutrients: Role of carbohydrates, proteins, and fats in energy synthesis
Vaccines: BCG for TB, Polio drop for Poliomyelitis

Plant & Animal Kingdom Basics

Focus on the taxonomy and unique physiological traits that distinguish species groups. Questions often test knowledge of photosynthesis, plant tissues, and the broad classification of vertebrates vs invertebrates.

Photosynthesis: Conversion of light energy to chemical energy in chloroplasts
Xylem vs Phloem: Water transport vs Food transport
Mammals: Warm-blooded, mammary glands, four-chambered heart
Respiration in plants: Stomata gas exchange
Plant Hormones: Auxin (growth), Gibberellins (stem elongation)

Formula Sheet

Photosynthesis Equation: 6CO2 + 6H2O + light -> C6H12O6 + 6O2

Energy Balance: Caloric intake vs metabolic rate

Exam Tip

Prioritize memorizing the 'Vitamin-Deficiency-Disease' table and the 'Gland-Hormone' chart, as these are the most frequently repeated static facts.

Common Mistakes

Confusing the specific roles of Xylem and Phloem in plant transport
Misidentifying diseases caused by viruses versus those caused by bacteria
Mixing up fat-soluble vitamins (A, D, E, K) with water-soluble vitamins (B, C)

More Revision Notes

PSU Notes

PSU & Energy Sector Knowledge

PSU Notes

Input-Output & Coding

PSU Notes

Mixtures & Alligation

PSU Notes

Q Arith

PSU Notes

Data Sufficiency

PSU Notes

Geometry & Mensuration

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