2nd Year Biology Pairing Scheme 2025 PDF Download – Punjab Boards

2nd Year (Class 12) Biology students under the Punjab boards now have the official 2025 pairing scheme for their board exams. It covers BISE Lahore, Rawalpindi, Faisalabad, Sargodha, Gujranwala, Sahiwal, Multan, Bahawalpur, and Dera Ghazi Khan, along with the Azad Kashmir board, and lays out how the 85-mark theory paper is divided across chapters 15 to 27.

Second-year Biology has a heavier chapter list than first year, so a clear weightage guide saves a lot of guesswork. This scheme shows the MCQ split, how short questions are grouped in Q.2, Q.3 and Q.4, and which chapters pair up in the five long questions — with each part marked Knowledge, Understanding or Analytical so you know what kind of answer to prepare.

Quick Facts

• Class: 12th (2nd Year)
• Subject: Biology
• Year: 2025 (Updated February 2025)
• Boards: All Punjab Boards + Azad Kashmir (AJK)
• Total Theory Marks: 85 (MCQs 17 + Short 44 + Long 24)
• Format: PDF

Exam Pattern Breakdown

MCQs — 17 Marks

Chapter	MCQs	Chapter	MCQs	Chapter	MCQs
15	1	20	2	25	1
16	2	21	1	26	1
17	2	22	1	27	1
18	1	23	2
19	1	24	1

The 17 MCQs are distributed across chapters 15 to 27 as shown.

Short Questions — 44 Marks

Q.2 – Chapter	Qs	Q.3 – Chapter	Qs	Q.4 – Chapter	Qs
15	3	17	3	19	2
16	3	22	3	20	3
18	2	23	3	21	2
26	2	25	3	24	2
27	2

Attempt rules differ by question: Q.2 and Q.3 — attempt any 8 of the 12 offered in each; Q.4 — attempt any 6 of the 9 offered. Qs = number of questions offered from that chapter.

Long Questions — 24 Marks (Attempt 3 out of 5)

Q.5	Q.6	Q.7	Q.8	Q.9
(a) Ch15 [K] (b) Ch21 [U]	(a) Ch16 [U] (b) Ch25 [K]	(a) Ch17 [U] (b) Ch24 [K]	(a) Ch18 [U] (b) Ch22 [A]	(a) Ch19 [U] (b) Ch23 [K]

Attempt any 3 of the 5 long questions. K = Knowledge-based, U = Understanding-based, A = Analytical-based — shown next to each part so you know what type of answer to prepare.

Important Things to Know

• The three short-question sections have different rules: Q.2 and Q.3 offer 12 questions each (attempt 8), while Q.4 offers 9 (attempt 6).
• Long questions mark each part Knowledge (K), Understanding (U) or Analytical (A) — use this to judge how deep your prep needs to go per chapter.
• Chapters 15–27 cover a wide range of topics, so don’t rely only on MCQ-heavy chapters — short and long questions pull from almost all of them.
• The 2025 paper follows the SLO-based pattern, so it differs a little from older papers; even so, roughly 90% of this scheme is expected to hold.
• This scheme is built around Punjab boards. Prepare all chapters fully rather than relying on the scheme alone.

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Download

Click below to download the free 2025 Biology Pairing Scheme PDF for 2nd Year, Punjab Boards.

⬇ Download PDF

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Who Should Use This Pairing Scheme

2nd Year (Class 12) students appearing in the 2025 Biology exam under any Punjab board or the Azad Kashmir board — regular college students and private candidates both.

Applicable Boards

Issued for all Punjab boards: Lahore, Rawalpindi, Faisalabad, Sargodha, Gujranwala, Sahiwal, Multan, Bahawalpur, and Dera Ghazi Khan. It also applies to the Azad Kashmir (AJK) board, which follows a similar paper pattern for Biology.

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FAQs

Is this pairing scheme official for 2nd Year Biology 2025?
Yes, it reflects the pairing pattern issued for Punjab boards and AJK for the 2025 exams.

What do K, U and A mean in the long questions table?
They mark the question type for each part: K = Knowledge-based, U = Understanding-based, A = Analytical-based.

Can students from other boards use it?
It is built for Punjab boards and AJK. Students from other boards should check their own board’s scheme.

Does the download include solved exercises?
No — this is the pairing (assessment) scheme only. It shows the marks distribution, not solved answers.

Note: pairing schemes are exam guidance, not a guaranteed paper pattern. Full details: freebooks.pk/disclaimer