Selected Biology Questions Asked in Previous Year Papers of SSC CGL

In this article, there are 40 questions from different chapters of Biology domain. All of them are selected after analyzing the difficulty level of each questions and uniqueness. so, go through it.

Created On: Dec 19, 2016 18:35 IST

SSC Examinations are going on with the tier III of the much popular combined graduate level examination coming up and the combined higher secondary level examination yet to take place for this year. In any SSC examination, general awareness plays a very important role in determining your final selection and it consists of mainly history, geography, economics, political science and general science. In this article, we are going to bring you the previous year questions of SSC CGL on biology so that you get an idea of the level of questions and at the same time, you can prepare accordingly for the upcoming examinations

SSC CGL: Previous Year Compendium of Biology Questions

1. Which one of the following substances is normally found in urine?

a) Blood proteins
b) Creatinine
c) Red blood cells
d) White blood cells

2. The thymus gland produces a hormone called

a) Thyroxin
b) thymosin
c) thyronine
d) calcitonin

3. Blood group AB has

a) No antigen
b) No antibody
c) Neither antigen nor antibody
d) Both antigen and antibody

4. Which Vitamins are those, if taken in excess can be dangerous as they are stored in the body?

a) B Complex
b) E and C
c) B and C
d) A and D

5. Blood group was discovered by

a) Alexander Fleming
b) William Harvey
c) Landsteiner
d) Pavlov

6. Decoding and interpretation of visual information in the brain are associated with

a) Frontal lobe
b) Occipital lobe
c) Temporal lobe
d) Parietal lobe

7. The food in onion is stored in the form of –

a)       Cellulose

b)       Protein

c)       Starch

d)       Sugar

8. Microbial degradation of nitrates into atmospheric nitrogen is known as –

a)       Ammonification

b)       Denitrification

c)       Putrefication

d)       Nitrification

9. Pulses are obtained from the family –

a)       Liliaceae

b)       Fungi

c)       Cycadacceae

d)       Leguminosae

10. Which among the following plants shows chloroplast dimorphism?

a)       Sugar Cane

b)       Sugar Beet

c)       Rice

d)       Wheat

11. The gene which exhibits multiple effects is known as –

a)       Pleiotropic

b)       Pseudogene

c)       Polygene

d)       Complementary

12. An enzyme produced by HIV that allows the integration of HIV DNA into the host cell’s DNA –

a)       DNA gyrase

b)       Ligase

c)       Integrase

d)       Helicase

13. The substrate of photorespiration is –

a)       Pyruvic Acid

b)       Glucose

c)       Fructose

d)       Glycolate

14. Which among the following is the infective stage of the Malaria parasite?

a)       Schigozoite

b)       Trophozoite

c)       Sporozoite

d)       Sporoblast

15. Match the following:

                I                                                II

A. Chlorophyll                           1. Plant disease

B. Nostoc                                   2. Photosynthetic pigment

C. Transpiration                         3. Diazotroph

D. Rust of wheat                        4. Loss of water from plant surface

a)       A-3, B-4, C-2, D-1

b)       A-2, B-3, C-4, D-1

c)       A-2, B-4, C-3, D-1

d)       A-4, B-3, C-1, D-2

16. Alfa toxins are produced by –

a)       Fungi

b)       Algae

c)       Bacteria

d)       Viruses

17. Outside the nucleus, DNA is found in –

a)       Endoplasmic Reticulum

b)       Golgi bodies

c)       Mitochondria

d)       Ribosome

18. Photoperiodism affects

a)       Fruiting

b)       Vegetative growth

c)       All of these

d)       Flowering

19. Allantois of embryo helps in –

a)       Digestion

b)       Protection

c)       Respiration

d)       Excretion

20. Match the following:

A. Ascorbic Acid      1. Photosynthetic Pigment

B. Chlorophyll          2. Quencher

C. Carotenoid          3. Enzyme

D. Superoxide Dismutase   4. Vitamin C

a)       A-4, B-1, C-2, D-3

b)       A-4, B-2, C-1, D-3

c)       A-4, B-1, C-3, D-2

d)       A-2, B-4, C-1, D-3

21. Xenobiotics which are generally resistant to microbial attacks are known as which among the following?

a)       Recalcitrant

b)       Biodegradable

c)       Persistent

d)       All of the given options

22. Who discovered the first antibiotic?

a)       W Fleming

b)       Louis Pasteur

c)       C Waksman

d)       A Fleming

23. Microbial Type Culture Collection Centre is located in –

a)       Hyderabad

b)       Bangalore

c)       Chandigarh

d)       New Delhi

24. Leaves of many grasses are capable of folding and unfolding because –

a)       They have stomata on both sides of the leaves

b)       They have high levels of silica

c)       They have specialized bulliform cells

d)       Their mesophyll is not differentiated into palisade and spongy parenchyma

25. Pleura is the covering of –

a)       Liver

b)       Kidney

c)       Heart

d)        Lung

26. Which one of the following is an egg-laying mammal?

a)       Duck-billed Platypus

b)       Kangaroo

c)       Bandicoot

d)       Sloth

27. Which among the following is the smallest bone in the human body?


28.  ____________are known as the ‘suicide bags’ of the cell.


29. Which of the following is a viral disease?

a) Plague 

b) Malaria

c) Cholera 

d) Polio


30. Who invested penicillin?

a)       Alexander Fleming

b)       Louis Pasteur

c)       Dreser

d)       Edward Jenner

31. Who invented vaccination for ‘Small Pox’?

a)       Sir Fredric Grant Banting

b)       Sir Alexander Fleming

c)       Edward Jenner

d)       Louis Pasteur

32. Which of the following plants is called ‘Herbal Indian Doctor’?

a)       Amla

b)       Mango

c)       Neem

d)       Tulsi

33. The pH of human blood is

a)       7.2

b)       7.8

c)       6.6

d)       7.4

34. Which amongst the following is largest endocrine gland in the body?

a)       Thyroid

b)       Parathyroid

c)       Adrenal

d)       Pituitary

35. Which amongst the following is the largest mammal?

a)       Elephant

b)       Whale

c)       Dinosaur

d)       Rhinoceros

36. Which part becomes modified as the tusk of elephant?

a)       Canine

b)       Premolar

c)       Second incisor

d)       Molar

37. What happens to a person who receives the wrong type of blood?

a) All the arteries constrict
b) All the arteries dialates
c) The RBCs agglutinate
d) The spleen and lymphnodes deteriorate

38. NIS stands for—

a) National Infectious diseases Seminar
b) National Irrigation Schedule
c) National Immunisation Schedule
d) National Information Sector

39. Ringworm is a ……… disease.

a) Bacterial
b) Protozoan
c) Viral
d) Fungal

40. The pituitary gland is situated in

a) The base of the heart
b) The base of the brain
c) The neck
d) The abdomen

SSC CGL Tier-1 marks of the candidates are very important in order to secure a good job in various departments of the central government. For this purpose, you need to score well in the general awareness section which has biology as an integral part of the syllabus. So, prepare properly and these previous year questions from biology will help you understand the pattern and level of questions asked in this examination year after year.

Full answer key is available here..

All the Best!!










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