Past Paper 2025 10th Class Karachi Board Biology English Medium Subjective

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SECTION "B" (Short Answer Question) Marks: 24

NOTE: Answer any EIGHT(08) questions from this section. Each question carries THREE (03) Marks.

2. What is the role of Islet's of Langerhans cell?

3. What is lungs Cancer?

4. Describe the tools used in Genetic engineering.

5. What are three important aspects of homeostasis? Define any two of them.

6. Write three characteristics of Hydrophytes.

7. Write the names of three mammals and three birds that are extinct endangered in Pakistan.

8. Draw a neat and labelled diagram of T.S of angiospermic flower OR structure of Been seed.

9. Differentiate between sexual and asexual reproduction.

10. Draw a neat and labelled diagram of L.S of human skin.

11. Define the following terms:

(i)Myopia

(ii) Suckers

(iii)Consumers

12. What is fermenter? Write any two advantages of it.

13. What are the three main types of skeleton? Describe any one of them with example.

Section C (Detailed –Answer Question) (24)

NOTE: Attempt any FOUR (4) questions from this Section. Each question tries Six (6) marks.

14. Describe in detail the structure of Human Brain.

15. Draw a neat and labelled diagram of human respiratory system – OR—Reproductive system of male Rabbit.

16. Define Ecosystem and describe its biotic factors in detail.

17. Explain the difference between epigeal and hypogeal germination with the help of diagram.

18. What is fertilization? Describe any five differences between external fertilization and internal fertilization.

19. What is water pollution? How can it be controlled?

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