Biology - MOST IMPORTANT Bihar Police SI Previous Year Questions
Practice real questions from previous year exams of Bihar Police SI.
📘 Circulatory System- IV (Heart Chambers)📚 Animals and Heart Chambers
Q1
In the body of which of the following, blood passes through the heart only once in a single cycle?
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📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)
Q2
What is the diameter of the human eyeball?
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📘 Digestive System- III: Stomach📚 Gastric Juice
Q3
By which acid is food digested in the stomach?
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📘 Morphology📚 Germination
Q4
What are 'plumule' and 'radicle' related to?
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📘 Important Scientists of Biology📚 Other scientists and discoveries
Q5
Charak was associated with which of the following dynasties?
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📘 Connective Tissue📚 Cartilage
Q6
Which of the following is not a connective tissue?
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📘 Genetic Material📚 DNA
Q7
Which enzyme is used to join DNA fragments in DNA restriction?
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📘 Endocrine Glands- behind stomach📚 Pancreas and secreted hormones
Q8
Islets of Langerhans are part of which organ?
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📘 Digestive System- VI: Pancreas📚 General Facts
Q9
Which is the second largest digestive gland?
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📘 Morphology📚 Transpiration
Q10
When water enters guard cells, they swell and the stomatal pore ________.
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📘 Protozoal Diseases📚 Kala Azar
Q11
Which of the following is a Protozoan disease?
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📘 Macro-Nutrients: Carbohydrates📚 Disaccharides- Maltose, Sucrose, Lactose, Trehalose, etc.
Q12
Which of the following is non-reducing sugar?
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📘 Digestive System- I📚 Steps of Digestion (Ingestion, Digestion, Absorption, Assimilation, Egestion)
Q13
Absorbed fat after digestion in the intestine is transported by-
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📘 Endocrine Glands- Kidney📚 Hormones Secreted by Medulla
Q14
Emergency hormone is called-
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📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)
Q15
Gustatory receptors detect______.
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📘 Circulatory System- I (Blood and its Cells)📚 Red Blood Cells
Q16
In polycythemia, cells that increase in number abnormally are:
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📘 Micro-Nutrients: Vitamin-B Complex- Sources and Deficiency Diseases📚 Vitamin B3 (Niacin)
Q17
Pellagra disease is caused by deficiency of which vitamin?
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📘 Botany- types of Hormones📚 Growth Inhibitor- Ethylene, Abscisic Acid
Q18
Which of the following plant hormones inhibits growth?
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📘 Circulatory System- I (Blood and its Cells)📚 Blood vessels- Artery, Vein, Capillary
Q19
Which blood vessels are composed of a single endothelial layer?
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📘 Classification of Kingdom📚 Phylum Mollusca
Q20
Cultivation is done for obtaining pearls -
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