Zoology · Class 11 Science

Tamil Nadu Dge Class 11 Zoology — Real Previous-Year Papers

with complete answers

Real previous-year board papers, year by year — the official exam pattern, the full question paper, and every question solved the concept-first way. Distinct from the chapter-wise textbook bank.

2019–2026
Years of papers: 7
Total Papers: 7
Real Board Papers: 0
Sample papers: 266
Real-paper Q & A: 0
Sample-paper Q & A

Real board-paper questions available, by year

38 Q2026complete

38 Q2025complete

38 Q2024complete

38 Q2023complete

38 Q2022complete

—2021No regular exam held this year

38 Q2020complete

38 Q2019complete

—2018Paper not yet available

2021 — No regular exam held this year: Tamil Nadu cancelled the March 2021 Class 9/10/11 Public Examinations outright (COVID-19 2nd wave) — students were promoted using their quarterly/half-yearly marks, so no genuine full-cohort exam was ever sat. The single "September 2021" paper on DGE’s own archive that year is a private-candidate/improvement sitting, not the regular annual exam, so it is not published here (mirrors this platform’s standing "main sitting only" convention, applied identically to TN-DGE’s Class-12 2021 papers).

2018 — Paper not yet available: This is the TN-DGE Class-11 (+1) Public Examination’s debut year (2017–18). Sibling subjects from the same sitting ARE archived, but no verified original question paper for this specific subject has been found from any source we check (official DGE archive, trbtnpsc.com, padasalai.net, nammakalvi.com, kalviexpress.in). We publish only a paper we can verify against a real printed original — this one will appear here once it is.

Tamil Nadu HSC First Year (DGE) Board 2026 · Set ANNUAL

Real board examination

About this paper

The real Class-12 board examination held in 2026. Every question below is solved the concept-first way. Sample papers are labelled honestly — never shown as a past exam.

Total marks: 70
Questions: 38
Duration: 180 min
Sections: 4

The marks / questions / duration above are the official exam pattern. We currently have 38 of this paper’s questions (100% of the full paper), with 38 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

Section	Type	Questions	Marks each	Total
ISection I	mcq	15	1	15
IISection II	short_answer_choice	6	2	12
IIISection III	short_answer_choice	6	3	18
IVSection IV	long_answer_or	5	5	25
Total		38		70

The question paper

The questions we hold for this paper, laid out by section. Solutions are on the Answers tab.

Board Examination

Zoology

Tamil Nadu HSC First Year (DGE) Board 2026 · Set ANNUAL

Series/Set: ANNUALRoll No. ________

Time Allowed: 3 hoursMaximum Marks: 70

General Instructions

This question paper contains 38 questions divided into 4 sections — I, II, III, IV.
Section I comprises 15 questions of 1 mark each (mcq).
Section II comprises 6 questions of 2 marks each (short_answer_choice).
Section III comprises 6 questions of 3 marks each (short_answer_choice).
Section IV comprises 5 questions of 5 marks each (long_answer_or).

Above is the official exam pattern. The questions printed below are those we currently hold for this paper.

Section A

Q1.

Ichthyophis belongs to which Class ?

(a) Amphibians
(b) Fishes
(c) Aves
(d) Reptiles

[1]

Q2.

The type of vision in Cockroach is :

(a) Mosaic
(b) Three-dimensional
(c) Cockroaches do not have vision
(d) Two-dimensional

[1]

Q3.

Which of the following combinations are not correctly matched ?

(a) Vitamin K - Sterility
(b) Vitamin D - Rickets
(c) Niacin - Pellagra
(d) Thiamine - Beriberi

[1]

Q4.

When members of any species have large variations then ________ system is used.

(a) Trinomial
(b) Tautonymy
(c) Binomial
(d) Taxonomy

[1]

Q5.

Erythroblastosis foetalis is due to the destruction of :

(a) Foetal WBCs
(b) Foetal RBCs
(c) Foetus suffers from Minamata
(d) Foetus suffers from Atherosclerosis

[1]

Q6.

The end product of Ornithine cycle is :

(a) Urea
(b) Carbondioxide
(c) Ammonia
(d) Uric Acid

[1]

Page 1 of 6

Q7.

Iodised salt is essential to prevent : (a) Goitre (b) Rickets (c) Acromegaly (d) Scurvy

[1]

Q8.

Isinglass is used in : (a) Distillation of wines (b) Preparation of wines (c) Preservation of wines (d) Clearing of wines

[1]

Q9.

____ attach one bone to another. (a) Ligaments (b) Tendon (c) Muscle fibres (d) Collagen

[1]

Q10.

In which animal classical conditioning experiment is conducted ? (a) Rabbit (b) Rat (c) Dog (d) Cat

[1]

Q11.

Pneumatic bones are seen in : (a) Reptilia (b) Mammalia (c) Sponges (d) Aves

[1]

Q12.

The respiratory structures of insects are : (a) Green glands (b) Tracheal tubes (c) Lungs (d) Gills

[1]

Q13.

Which of the following pairings is correct ? (a) Sensory nerve - Ventral (b) Sensory nerve - Afferent (c) Motor nerve - Dorsal (d) Motor nerve - Afferent

[1]

Q14.

Normal Blood Pressure in human is : (a) 120/80 mmHg (b) 130/90 mmHg (c) 160/100 mmHg (d) 140/100 mmHg

[1]

Q15.

The functional unit of a muscle fibre is : (a) Myosin (b) Sarcomere (c) Actin (d) Sarcoplasm

[1]

Section B

Q1.

What are the types of Specialised Connective Tissues ?

[2]

Page 2 of 6

Q2.

Give the economic importance of Lac insect.

[2]

Q3.

Why are Villi present in the intestine and not in the stomach ?

[2]

Q4.

Identify the biological terms given below in the list. (a) Temporary storage of urine (b) Scientific term of urination [Gall bladder, Urinary bladder, Micturition, Ureters]

[2]

Q5.

What does a Pace Maker do ?

[2]

Q6.

How are Spongin and Spicules important to a Sponge ?

[2]

Q7.

Draw and label the structure of a typical Long Bone.

[2]

Q8.

Why do you call Cockroach a pest ?

[2]

Q9.

What is meant by Anastomoses ?

[2]

Page 3 of 6

Section C

Q1.

Draw and label the parts of a typical Chordate.

[3]

Q2.

Some Epithelia are pseudostratified. What does this mean ?

[3]

Q3.

Distinguish between Mitral valve and Semi-lunar valve.

[3]

Q4.

How the body makes long-term adjustments when living at high altitude ?

[3]

Q5.

Why the limbic system is called the emotional brain ? Name the parts of it.

[3]

Q6.

Enumerate the uses of Stethoscope.

[3]

Q7.

Differentiate between probiotics and pathogenic bacteria.

[3]

Page 4 of 6

Q8.

How will you select eggs for hatching ?

[3]

Q9.

What are the three protective coverings of the brain ?

[3]

Section D

Q1.

(a) Explain the heart's role in secreting a hormone that regulates renal function ? What hormone is this ? **OR** (b) What are the functions of the Skeletal system ?

[5]

Q2.

(a) Explain the female reproductive system of Frog. **OR** (b) Sketch a flow chart to show the pathway of airflow during respiration.

[5]

Q3.

(a) Write in detail the general characteristics of class Mammalia. **OR** (b) The bile juice of liver has no digestive enzyme. But is very essential for proper digestion of food, especially, of the fats. Discuss the following. (i) What is composition of Bile ? (ii) How it helps in digestion of fats and other nutrients of food ? (iii) How it helps in absorption of fats ?

[5]

Page 5 of 6

Q4.

(a) Describe the sensory receptors present in the Skin. **OR** (b) Growth hormone is important for normal growth. Justify the statement.

[5]

Q5.

(a) Describe the mechanism by which the human heartbeat is initiated and controlled. **OR** (b) What are the nutritive values of Fishes ?

[5]

Page 6 of 6