7. Why is transpiration important for plants? 8. Draw a labelled diagram of the external structure of a leaf.
9. Name the male part of a flower. Draw its labelled diagram.
10. What are the advantages of dry cells?
11. What is the difference between a conductor and an insulator?
12. What are the two regions of a shadow?
13. What is the difference between a shadow and an image formed by plane mirror?
14. How has cactus modified itself to live in a desert?
15. Draw the structure of a flower and label its parts.