Biology Previous Year Questions 2026 | CG PCS

Biology - MOST IMPORTANT CG PCS Previous Year Questions

Practice real questions from previous year exams of CG PCS.

📘 Important Scientists of Biology📚 Father of Different branches of Biology
Q1

Who is the father of modern genetics?

🎯 CG PCS (Pre) G.S. 2010-11
📘 Classification of Kingdom📚 Levels of Classification (Kingdom, Phylum, Class,etc.)
Q2

A group of individual organism with fundamental similarities is called as a:

🎯 CG PCS (Pre) 2024
📘 Monera- Bacteria📚 General Facts
Q3

By which bacteria did the milk spoiles?

🎯 CG PCS (Pre) G.S. 2004-05
📘 Viral Diseases📚 Misc
Q4

What is not true about virus?

🎯 CG PCS (Pre) 2021
📘 Nomenclature of Organisms📚 Scientific Names of Animals
Q5

What is the scientific name of Leopard?

🎯 CG PCS (Pre) 2024
📘 Circulatory System- I (Blood and its Cells)📚 Blood- General Facts
Q6

What is the pH level of blood of a normal person?

🎯 CG PCS (Pre) Ist G.S., 2013
📘 Circulatory System- I (Blood and its Cells)📚 Blood Groups
Q7

Blood group AB can accept blood from a person who has blood group:

🎯 CG PCS (Pre) G.S., 2003
📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)
Q8

Where is the image of an object made in the human eye?

🎯 CG PCS (Pre) Ist G.S., 2014
📘 Central Nervous System📚 Fore brain- Cerebrum
Q9

In a human brain memory power is found in:

🎯 CG PCS (Pre) Ist G.S., 2013
📘 Endocrine Glands- Gonad📚 Ovary and secreted hormones
Q10

Match the list I endocrine glands with list II hormone secreted: List-I: A. Reproductive gland, B. Pituitary gland, C. Pancreas, D. Adrenal. List-II: 1. Insulin, 2. Progesterone, 3. Growth Hormone, 4. Cortisol.

🎯 CG PCS (Pre) G.S. 2004-05
📘 Digestive System- I📚 Nutrition - General Facts
Q11

What is major fuel in long term workout?

🎯 CG PCS (Pre) G.S. 2010-11
📘 Nervous System📚 Nervous System Overview
Q12

The snake bite firstly affects which part of body?

🎯 CG PCS (Pre.) Ist 2012
📘 Micro-Nutrients: Minerals📚 Macro-Nutrient Minerals
Q13

Which of the following is macronutrient in relation to growth of plants?

🎯 CG PCS (Pre.) 2020
📘 Micro-Nutrients: Minerals📚 Macro-Nutrient Minerals
Q14

Which of the following plant is not helpful in nitrogen fixation?

🎯 CG PCS (Pre) 2017-18
📘 Morphology📚 Dark Reaction
Q15

In the process of Photosynthesis, how many molecules of A.T.P. are involved in the synthesis of each molecule of Glucose?

🎯 CG PCS (Pre.) 2020
📘 Botany- types of Hormones📚 Growth Promoter- Auxin, Gibberellin, Cytokinin
Q16

Which of the following is a plant hormone?

🎯 CG PCS (Pre) 1st G.S., 2014
📘 Botany- types of Hormones📚 Growth Inhibitor- Ethylene, Abscisic Acid
Q17

The hormone found in gaseous state is -

🎯 CG PCS (Pre) Ist G.S., 2013
📘 Botany- types of Diseases📚 Fungal Diseases
Q18

Rice blast disease is a:

🎯 CG PCS (Pre) 2024
📘 Respiratory System- IV (Cellular Respiration)📚 Glycolysis
Q19

Which of the following statement is/are true in reference to break-down of glucose?
i. In cytoplasm, glucose breaks down into pyruvate which has four carbon molecules
ii. Due to lack of oxygen, pyruvate gets converted to lactic acid
iii. In absence of oxygen pyruvate gets converted to carbon dioxide and ethanol

🎯 CG PCS (Pre) 2021
📘 Genetic Material📚 Gene
Q20

Genes are made of-

🎯 CG PCS (Pre.) Ist, 2012