Biology · Class 12 Science

Jammu Kashmir Jkbose Class 12 Biology — 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.

2018–2026
Years of papers: 20
Total Papers: 20
Real Board Papers: 0
Sample papers: 296
Real-paper Q & A: 0
Sample-paper Q & A

Real board-paper questions available, by year

32 Q20262 sets

32 Q20252 sets

32 Q20242 sets

28 Q20232 sets

28 Q20222 sets

56 Q20214 sets

28 Q20202 sets

30 Q20192 sets

30 Q20182 sets

JKBOSE Class 12 Annual Regular Examination 2026 · Set BOTANY

Real board examination

Sets

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: 35
Questions: 16
Duration: 90 min
Sections: 4

The marks / questions / duration above are the official exam pattern. We currently have 16 of this paper’s questions (100% of the full paper), with 16 fully solved. Questions we couldn’t yet extract or verify are held — never shown as complete.

Sections & marks

Section	Type	Questions	Marks each	Total
ASection A	mcq	5	1	5
BSection B	subjective	5	2	10
CSection C	subjective	5	3	15
DSection D	subjective	1	5	5
Total		16		35

The question paper

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

Board Examination

Biology

JKBOSE Class 12 Annual Regular Examination 2026 · Set BOTANY

Series/Set: BOTANYRoll No. ________

Time Allowed: 1 hr 30 minMaximum Marks: 35

General Instructions

This question paper contains 16 questions divided into 4 sections — A, B, C, D.
Section A comprises 5 questions of 1 mark each (mcq).
Section B comprises 5 questions of 2 marks each (subjective).
Section C comprises 5 questions of 3 marks each (subjective).
Section D comprises 1 question of 5 marks each (subjective).

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

Section A

mcq · 1 mark each · 5 of 5 shown

Q1.

Which triple codon does not code for any amino acid?

(a) UUU
(b) UUA
(c) UAG
(d) UUG

[1]

Q2.

Antibiotics are mostly obtained from-

(a) Fungi
(b) Actinomycetes
(c) Cyanobacteria
(d) Both
(a) and (b)

[1]

Q3.

Which of the following are not the primary colonisers?

(a) Viruses
(b) Lichens
(c) Blue green algae
(d) Mosses

[1]

Q4.

A gene is made up of -

(a) DNA
(b) RNA
(c) Either DNA and RNA
(d) Amino acids

[1]

Q5.

Which of the following is not an item of biopiracy?

(a) Microorganisms
(b) Plants
(c) Animals
(d) Abiotic Chemicals

[1]

Section B

subjective · 2 marks each · 5 of 5 shown

Q1.

Give the significance of double fertilization.

[2]

Page 1 of 3

Q2.

What are multiple alleles? Give their characteristics.

[2]

Q3.

Name any two biofertilizers.

[2]

Q4.

A woman with blood group O married a man with AB group. Show the possible blood groups of Progeny.

[2]

Q5.

What are the characteristics of Anemophilous Flowers?

[2]

Section C

subjective · 3 marks each · 5 of 5 shown

Q1.

Briefly describe the development of male gametes from microspore in flowering plants.

[3]

Q2.

Define genetic code. What are its characteristics?

[3]

Q3.

Define Ecological Pyramid. Name three types of ecological Pyramids.

[3]

Page 2 of 3

Q4.

What is tissue culture? Give its applications.

[3]

Q5.

Write short notes on the following: (a) Hot spots of Biodiversity (b) Red Data Book (c) Biosphere Reserves

[3]

Section D

subjective · 5 marks each · 1 of 1 shown

Q1.

What kinds of threats to the biodiversity may [illegible word - scan too faint to read] its loss? **OR** What are positive interactions in a biotic community? Give their kinds. Explain any one of these.

[5]

Page 3 of 3