PNB Biology (EM) — Class 10 Punjab Board book
Official Punjab Curriculum and Textbook Board (PCTB) Biology textbook for Class 10 (English Medium). Neeche poori kitab online parhein ya official PDF download karein — bilkul muft.
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PNB Biology (EM) — Class 10 — neeche scroll karte jayein, aglay safhay khud aa jayein ge. Zoom bhi kar sakte hain.
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Is kitab ke baare mein
This is the English-medium practical notebook for class-10 Biology, covering chapters 10 to 17 of the PCTB syllabus. Each chapter opens with the experiment's objective and apparatus, then walks through the procedure step by step — from demonstrating gaseous exchange in plants to observing fermentation by yeast and bacteria. The experiments are the ones actually asked in board practical exams, so the book doubles as exam preparation.
The real value of this notebook is in its observations and precautions: what you should see under the microscope, how to record a pulse rate correctly, and the safety steps for each dissection or culture. Work through the experiments in chapter order, because later chapters (heredity, biotechnology) assume the lab discipline built in the earlier ones.
Aham mozuaat
Chapter 10: Gaseous Exchange
Page 1
Chapter 11: Homeostasis
Page 13
Chapter 12: Co-ordination
Page 16
Chapter 13: Support and Movement
Page 26
Chapter 14: Reproduction
Page 29
Chapter 15: Inheritance
Page 49
Chapter 16: Man and Environment
Page 60
Chapter 17: Biotechnology
Page 62
Ustad ka mashwara
In practicals, the viva is where students lose marks, not the experiment. After doing each experiment, close the book and explain the procedure aloud in your own words — if you can teach it, you know it. And always draw labelled diagrams with a sharp pencil; a blurred diagram is a lost diagram.
— Rehman Ahmad Chaudhary, Head Teacher, GPS 117 DB(BJ), Yazman
Aksar pooche gaye sawalat
What does the gaseous exchange experiment in chapter 10 show?
Chapter 10's experiment demonstrates gaseous exchange — typically using a potted plant under a bell jar to show oxygen release, or lime water to show CO2 in exhaled air. Note the colour changes carefully; they are the whole point of the observation table.
How do I draw mitosis stages for the exam?
Use the photomicrographs in chapter 13 as your reference: label the stages (prophase, metaphase, anaphase, telophase) by chromosome position and shape. Examiners award marks for correct labels, so practice drawing each stage from memory.
What precautions matter in the biotechnology fermentation experiment?
Chapter 17's fermentation experiment uses yeast on flour/milk to show anaerobic respiration. Keep the setup at warm room temperature, seal it properly, and record gas production at fixed time intervals — the observation table is where the marks are.
Do I need separate apparatus for every experiment?
No — several chapters share apparatus (microscope, slides, beakers). But never skip the precautions section of any experiment; examiners ask viva questions directly from it.
Class 10 ki mazeed kitabein
Disclaimer
Ye kitab Punjab Curriculum and Textbook Board (PCTB) ki official publication hai. Download aur online reading PECTAA ki official e-books listing (pectaa.edu.pk) se faraham ki jati hai — sirf talimi maqsad ke liye. Malkiyat PCTB ki hai; is site ka koi dawa nahi.