CSS Botany Past Paper 2026

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

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.