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Biology - MOST IMPORTANT UPSC EPFO Previous Year Questions

Practice real questions from previous year exams of UPSC EPFO.

📘 Diseases: Overview📚 Infectious Agents and Diseases

Q1

Bacteria and viruses cause

🎯 UPSC EPFO APFC 2002

A.

Allergies

B.

Non-communicable diseases

C.

Degenerative diseases

D.

Infectious diseases

📘 Digestive System- I📚 Nutrition - General Facts

Q2

For calculating Body Mass Index (BMI), weight of the person (in kg) is divided by the:

🎯 UPSC EPFO APFC 2012

A.

Square of the weight (in kg)

B.

Square of the height (in meters)

C.

Square root of the height (in meters)

D.

Vitamins intake

📘 Genetics📚 Misc

Q3

Besides resistance to pests, what are the other prospects for which plants have been genetically engineered? 1. To enable them to withstand drought 2. To increase the nutritive value of the produce 3. To enable them to grow and do photosynthesis in spaceships and space stations 4. To increase their shelf life Select the correct answer using the codes given below:

🎯 UPSC EPFO APFC 2015

A.

1, 2 and 3 only

B.

3 and 4 only

C.

1, 2 and 4 only

D.

1, 2, 3 and 4

📘 Genetic Material📚 DNA

Q4

DNA fingerprinting is a technique used for the detection of

🎯 UPSC EPFO APFC 2015

A.

Alzheimer's disease

B.

Disputed parentage

C.

AIDS

D.

Yellow fever

📘 Viral Diseases📚 Misc

Q5

What is the causal agent of Chikungunya?

🎯 UPSC EPFO APFC 2017

A.

Non-chlorophyllous bacterium

B.

Nematode

C.

Virus

D.

Fungus

📘 Protista- Euglena📚 General Facts

Q6

Which one of the following has the characteristics of both an animal as well as a plant?

🎯 UPSC EPFO APFC 2017

A.

Fern

B.

Moss

C.

Earthworm

D.

Euglena

📘 Reproduction in Organisms- IV (Female Reproductive System)📚 Ovaries

Q7

Which one of the following is not a female reproductive organ in humans ?

🎯 UPSC EPFO APFC 2021

A.

Ovaries

B.

Oviducts

C.

Cervix

D.

Stamen

📘 Botany- Plant Classification- Cryptogams📚 Bryophyta

Q8

Which one of the following cannot be called "Amphibian of the Plant Kingdom"?

🎯 UPSC EPFO APFC 2021

A.

Spirogyra

B.

Riccia

C.

Funaria

D.

Marchantia

📘 Genetic Material📚 Chromosomes

Q9

Which one of the following chromosomes has a mismatched pair in a normal human male?

🎯 UPSC EPFO APFC 2021

A.

Chromosome number 21

B.

Chromosome number 18

C.

X-chromosome

D.

Chromosome number 13

📘 Important Scientists of Biology📚 Other scientists and discoveries

Q10

The word 'Vaccine' has been derived from a Latin word having meaning

🎯 UPSC EPFO APFC 2021

A.

Antibody

B.

Immunity

C.

Cow

D.

Guinea pig

📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)

Q11

The human eyeball is composed of three layers. The correct sequence of the layers from exterior to interior is

🎯 UPSC EPFO APFC 2023

A.

Sclera → Choroid → Retina

B.

Cornea → Choroid → Retina

C.

Cornea → Sclera → Choroid

D.

Sclera → Cornea → Choroid

📘 Morphology📚 Misc

Q12

The pillar-like structures which hang vertically downward from the aerial branches found in banyan tree are known as

🎯 UPSC EPFO APFC 2023

A.

tap roots

B.

climbing roots

C.

fibrous roots

D.

prop roots

📘 Genetic Material📚 DNA

Q13

Consider the following statements about DNA: 1. DNA refers to Deoxyribonucleic Acid. 2. It is located in the ribosomes. 3. It is composed of Ribonucleic Acid. 4. It can make a copy of itself. Which of the statements given above is/are correct?

🎯 UPSC EPFO EO/AO 2023

A.

1 and 4

B.

1 and 3

C.

4 only

D.

2 and 3

📘 Morphology📚 Misc

Q14

Velamen, a spongy tissue, is formed in :

🎯 UPSC EPFO EO/AO 2023

A.

Tap root

B.

Epiphytic root

C.

Fibrous root

D.

Respiratory root

📘 Micro-Nutrients: Minerals📚 Micro-Nutrient Minerals

Q15

Black soil of peninsular India is rich in which of the following? I. Iron II. Phosphorus III. Magnesia IV. Organic matter Select the correct answer using the code given below:

🎯 UPSC EPFO PA 2024

A.

I only

B.

I and II only

C.

I and III only

D.

II, III and IV only

📘 Respiratory System- III (Respiratory Organs in Humans)📚 Lungs- General Facts

Q16

Which one among the following is the correct nature of the substance filling up the pleural cavity, the space between the lungs and the chest?

🎯 UPSC EPFO 2025

A.

Liquid

B.

Dry air

C.

Humid air

D.

Fatty muscle

📘 Digestive System- I📚 Nutrition - General Facts

Q17

Which one among the following statements with regard to fatty acids is correct?

🎯 UPSC EPFO 2025

A.

Most fatty acids have carboxyl group at one end and methyl group at the other end.

B.

Saturated fatty acids carry even number of double bonds between carbon atoms.

C.

Saturated fatty acids carry odd number of double bonds between carbon atoms.

D.

Monounsaturated fatty acids carry as many hydrogen atoms as they can.

📘 Protista- Euglena📚 General Facts

Q18

Which one of the following has the characteristics of both an animal as well as a plant?

🎯 UPSC EPFO /APFC 2017

A.

Fern

B.

Moss

C.

Earthworm

D.

Euglena

📘 Genetic Material📚 DNA

Q19

Consider the following statements about DNA: 1. DNA refers to deoxyribonucleic Acid. 2. It is located in ribosome. 3. It is composed of ribonucleic Acid. 4. It can make its own copy. Which of the above statements is/are correct?

🎯 UPSC EPFO EO/AO 2023

A.

1 and 4

B.

1 and 3

C.

Only 4

D.

2 and 3

📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)

Q20

The human eyeball is made of three layers what is the correct sequence of layers from outside to inside?

🎯 UPSC EPFO APFC 2023

A.

Sclera $\rightarrow$ Choroid $\rightarrow$ Retina

B.

Cornea $\rightarrow$ Choroid $\rightarrow$ Retina

C.

Cornea $\rightarrow$ Sclera $\rightarrow$ Choroid

D.

Sclera $\rightarrow$ Cornea $\rightarrow$ Choroid

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