CSS Botany Past Paper 2026

Part-II questions

1. Q. 2

   Explain evidence in support of evolution from conventional and molecular biology.

2. Q. 3

   Discuss the biological and economic importance of fungi.

3. Q. 4

   How would you prove that replication of DNA is semiconservative?

4. Q. 5

   Explain Mendel’s Law of Segregation and Law of Independent Assortment. Is the law of Independent Assortment applicable to codominant genes and the genes present on the same chromosome?

5. Q. 6

   Explain the structure and reproduction of Spirogyra.

6. Q. 7

   Explain the molecular structure of the cell membrane.

7. Q. 8

   Write a short note on any FOUR of the following: a. Micro and megasporogenesis in angiosperms b. Ecosystem c. Plant hormones d. Air pollution e. Gymnosperms

Source & accuracy

Source:

The question paper is issued by the Federal Public Service Commission (FPSC) for the CSS competitive examination. The paper itself is unaltered; the PDF here has an EduReach Academy cover page added.

How this text was produced:

Question text is extracted automatically from the PDF and is not a re-typed transcript. Part-I (the MCQ block answered on the OMR sheet) is not reproduced; what appears here is the Part-II descriptive paper. Where a paper is image-only or its text layer does not preserve reading order, no text is shown and the original PDF is offered instead.

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Standard FPSC instructions

Printed on this and every CSS paper.

• Part-II is to be attempted on the separate Answer Book.
• All the parts (if any) of each question must be attempted at one place instead of at different places.
• Write Q. No. in the Answer Book in accordance with Q. No. in the question paper.
• No page/space be left blank between the answers. All the blank pages of the Answer Book must be crossed.
• Extra attempt of any question or any part of the attempted question will not be considered.