TGT Biology Previous Year Paper

1. During fasting, in what sequence that are the following organic compound used up by the body ?
A) Fats, carbohydrates and proteins
B) Carbohydrates, proteins and lipids
C) Proteins, lipids and carbohydrates
D) Carbohydrates, Fats and proteins

2. Enteropeptidase enzyme present in
A) Saliva
B) Gastric juice
C) Intestinal juice
D) Pancreatic juice

3. The most common monomer of carbohydrates is molecule of
A) Maltose
B) lactose
C) Amylose
D) Glucose

4. Match the following
Nutrients	Functions
P. Phosphorus	1. Nucleotides
Q. Potassium	2. Opening / closing of stomata
R. Iron	3. Formation of chlorophyll
S. Sulphur	4. Protein structure

Choose the correct answer

A ) P-1, Q-3, R-2,S-4

B) P-1, Q-2, R-3,S-4

C ) P-4, Q-1, R-2,S-3

D) P-2, Q-1, R-3,S- 4

5. Biological nitrogen fixation is

A ) Fixing of nitrogen by living organisms

B) Fixing of nitrogen by non- living organisms

C) Fixing of nitrogen by industries

D) Fixing of nitrogen by decaying of biomass

6. The protein part of a holoenzyme is

P. Co-enzyme
Q. Apo enzyme

R. Co- factor
S. Substrate

Choose the correct answer

A) Only Q
B ) Only S

C ) P,Q,R
D) P, Q,R, S

7. The most abundant protein on Earth

P. RUBISCO
Q. CELLULOSE

R. ALBUMIN
S. HAEMOGLOBIN

Choose the correct answer

A) Only Q
B ) Only P

C ) P,Q,R
D) P, Q,R, S

8. Ratio of the volume of CO2 liberated to the volume of O2 absorbed during respiration is called

P. Krebs cycle
Q. Glycolysis

R. Respiratory quotient

S. Oxidative phosphorylation

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

9. The method of inducing flowering in plants by pre-chilling treatment is

P. Apical dominance
Q. Bolting

R. Ethephon
S. Vernalisation

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) Only S

10. It is the sudden elongation of internodes which is followed by flowering is

P. Apical dominance
Q. Bolting

R. Ethephon
S. Vernalisation

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) Only S

11. Read the following statements

1. Tetanus
2. Cholera
3. Typhoid

4. Leprosy
5. Syphilis
6. Botulism

7. Pneumonia
8. Diphtheria

Which of the following are bacterial diseases ?

A ) 1,2,3,4,5,6
B) 1,2,4,5,6 ,8

C) 1,2,3,5,6,7,
D) 1,2,3,4,5,6,7,8

12. Read the following statements

1. Tetanus
2. Rabies
3. Mad cow

4. Leprosy
5. Syphilis
6. Hepatitis

7. Pneumonia
8. Diphtheria

Which of the following are not bacterial diseases ?

A ) 2,3,4
B) 2,4,5,6

C ) 2,3,6
D) 1,2,3,4,5,6,7,8

13. The character which is not expressed phenotypically in heterozygous condition is

P. Recessive
Q. Dominant

R. Co-dominant
S. Alleles

Select the correct answer

A) Only Q
B ) Only P

C ) P,Q,R
D) Only S

14. Read the following statements

P. Splicing Q. Regulation of transcription

R. Found in eukaryotic nucleus

S. Found in prokaryotic nucleus

Which of the following are statements are related to the sn-RNA ?

A) Only Q
B ) Only P

C ) P,Q,R
D) Only S

15. Read the following statements

P. Identification of DNA with desirable genes

Q. Introduction of the identified DNA into the host.

R. Maintenance of introduced DNA in the host and transfer of the DNA to its progeny

Arrange the steps in right order of genetically modifying an organism.

A) P,R,Q
B ) R,P,Q

C ) P,Q,R
D) Q,R,P

16. Find the Mendalian disorders in humans.

1. Thalassemia
2. Haemophilia

3. Sickle cell anemia
4.Cystiefibrosis

5. PKU
6. Alkaptonuria

Select the correct answer

A ) 2,3,4
B) 2,4,5,6

C ) 2,3,6
D) 1,2,3,4,5,6

17. A protein toxin produced by Bacillus thuringensis that kills certain insects is

P. Biotin
Q. Cry-protein

R. Chromatin
S. Protective protein

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

18. Read the following statements

1. Spirulina maxima
2. Chlorella

3. Scenedesmus
4. Candida utilis

5. Chaetomium
6. Methylophulus

Which of the following are SCP producing organisms ?

A ) 1,2,3,4
B) 1,2,4,5,6

C ) 1,2,3,6
D) 1,2,3,4,5,6

19. Cells whose cell walls have been removed by enzymatic digestion is called

P. Protoplasts
Q. Protoplasm

R. Hybridisation
S. Totipotency

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

20. The symbiotic association between fungi and plants is called

P. Mycorrhiza
Q. Lichens

R. Symbiosis

Select the correct answer

A) Only Q
B ) Only P

C ) P and Q
D) P, Q,R

21. Organisms that enrich the nutrient quality of the soil is

P. Bio-pesticides
Q.Vermicompost

R. Biofertilizers
S. Methanogens

Select the correct answer

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

22. Read the following statements

P. Jaundice
Q. Diarrhoea

R. Constipation
S. Vomiting

Which of the following are disorders of the digestive system ?

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

23. A mass of lymphoid tissue present in the nasopharynx is called

P. Adenoids
Q. Pharyngeal tonsil

R. Lipogenesis
S. Odontoblasts

Select the correct answer

A) Only Q
B ) Only R

C ) P and Q
D) P, Q,R, S

24. Read the following statements

P. Asbestosis
Q. Silicosis

R. Siderosis
S. Black- lung disease

Which of the following are occupational respiratory disorders?

A) Only Q
B ) Only R

C ) P,Q,R
D) P, Q,R, S

25. Effect of CO2 and H+ on the oxygenaffinity of haemoglobin is called

P. Bohr effect
Q. Sigmoid effect

R. Hamburger’s effect

Select the correct answer

A) Only P
B ) Only R

C ) P and Q
D) P, Q, R

26. The valve between the right atrium and the right ventricle of the mammalian heart is

P. Mitral valve
Q. Tricuspid valve

R. Bicuspid valve
S. Bundle of His

Select the correct answer

A) Only Q
B ) Only R

C ) P and Q
D) P, Q,R, S

27. The funnel like dilated proximal part of the ureter in the kidney is

P. Duct of Bellini
Q. Renal pelvis

R. Glomerular filtration
S. Renal column

Select the correct answer

A) Only Q
B ) Only R

C ) P and Q
D) P, Q,R, S

28. A chemical substance which is released by the presynaptic neurons at synapses that transmits information to the next neurons is

P. Neurotransmitter
Q. Neuroregulator

R. Neuroventilator
S. Corpus callosum

Select the correct answer

A) Only Q
B ) Only P

C ) P and Q
D) P, Q,R, S

29. The place of retina which has no photoreceptors is

P. Blind spot
Q. Brain stem

R. Amygdala
S. Iris spot

Select the correct answer

A) Only P
B ) Only R

C ) P and Q
D) P, Q,R, S

30. An increase in the production of urine by the kidneys is called

P. Diabetes Mellitus
Q. Diuresis

R. Anti diuretic

Select the correct answer

A) Only Q
B ) Only R

C ) P and Q
D) P, Q,R, S

31. Match the following
Period	Significance
P . Silurian	1. Origin of fishes
Q. Cambrian	2. Origin of trilobites
R. Permian	3. Extinction of trilobites
S. Ordovician	4.Origin of ostracoderms

Choose the correct answer

A ) P-1, Q-3, R-2,S-4

B) P-1, Q-2, R-3,S-4

C ) P-4, Q-1, R-2,S-3

D) P-2, Q-1, R-3,S- 4

32. Match the following
Name	Genetic code
P. Ochre	1. UAA
Q. Amber	2. UGA
R. Opal	3. UAG

Choose the correct answer

A ) P-1, Q-3, R-2

B) P-1, Q-2, R-3

C ) P-3, Q-1, R-2

D) P-2, Q-1, R-3

33. Match the following
List I	List II
P. Trisomic	1. 2n + 1
Q. Tetrasomic	2. 2n + 2
R. Monosomic	3. 2n - 1
S. Nullisomic	4. 2n - 2

Choose the correct answer

A ) P-1, Q-3, R-2,S-4

B) P-2, Q-1, R-3,S-4

C ) P-2, Q-3, R-1,S-4

D) P-1, Q-2, R-3,S-4

34. Match the following
Proposed by	System
P. Linnaeus	1. Natural
Q. Bentham & Hooker’s	2. Artificial
R. Engler & Prantl	3.Phylogenetic