📖 11th Botany Important Five Mark Questions 2025 – Public Exam Guide

📚 Master 11th Botany 5-Mark Questions & Score High!
The 11th Botany Important Five Mark Questions 2025 guide is specially designed for Tamil Nadu 11th Public Exam students. These chapter-wise 5-mark questions are carefully selected from previous year question papers, model exams, and textbook exercises, covering high-scoring topics for students to prepare effectively.

✔ Based on Tamil Nadu 11th Board Exam Syllabus
✔ Chapter-wise 5-Mark Important Questions with Answers
✔ Includes Diagrams, Detailed Explanations & Key Concepts
✔ Previous Year Public Exam Questions Covered

Most Important Five Marks

1. Differentiate between Gymnosperms and Angiosperms – 6 times
2. Write the characteristics feature of DNA – 5 times
3. Explain the insectivorous mode of nutrition in angiosperms – 5 times
4. Explain the different types of placentation with examples – 5 times
5. Write the significance of mitosis – 4 times
6. Draw the ultra structure of a plant cell – 4 times
7. Explain the types of stele with diagram – 4 times
8. Give a general account on Lichens – 3 times
9. Differentiate Gram-positive and Gram-negative bacteria – 3 times
10. Explain endosmosis using the potato osmoscope experiment – 3 times
11. Describe the nitrogen cycle – 3 times
12. Write the botanical description of Clitoria ternatea – 3 times
13. Write the importance of Mycorrhizae – 2 times
14. Write the merits of five kingdom classification – 2 times
15. Write the Living and Non-Living characters of Viruses – 2 times
16. Draw and label the parts of regions of the root – 2 times
17. Do you think the shape of the chloroplast is unique for algae? Justify your answer – 2 times
18. Differentiate between dicot and monocot stem – 2 times
19. Write the physiological effects of cytokinin – 2 times
20. Explain the structure of DNA with a diagram – 2 times
21. Explain the demonstration of Endosmosis by Potato osmometer – 2 times
22. Explain the types of meristems based on their position – 2 times
23. Write the difference between Sapwood and Heartwood – 2 times
24. What are the differences between plant cell and animal cell? – 2 times

Other Important Five Marks

1. What is Archebacterium? Give an example.
2. Differentiate nodal and internodal cells of Chara.
3. Write the primary functions of leaf.
4. What is Amber? Which group of plants produces Amber?
5. Why do farmers plant Leguminous crops in crop rotations/mixed cropping?
6. Write a note on Pitcher plant.
7. Explain Taproot modification.
8. Draw the cycle of Agaricus.
9. Explain the structure and functions of different types of RNA.
10. Give the floral characters of Clitoria ternatea.
11. Mention the pigments and storage food of Rhodophyceae.
12. Write the classification of Bentham and Hooker (Flow chart).
13. Write the reactions taking place in the mitochondrial inner membrane.
14. Describe the economical importance of algae.
15. Write any five differences between C3 and C4 plants.
16. Draw and label the parts of a bacterial cell.
17. List out the characteristic features of the stem.
18. What are the characters of Cyanophyceae?
19. Tabulate the antibiotics obtained from bacteria and their uses.
20. Write the factors affecting the rate of transpiration.
21. Describe the types of meristems on the basis of position in the plant body.