Give the difference in function between Petals and Sepals.

Give the difference in function between Filament and Style.

Draw a neat diagram of the 'longitudinal section of a maize grain' and label its seven important parts. Answer the following questions :

1. Name the structure which divides the embryonic and endospermic region of the grain.
2. Among the parts labelled by you above, which one of them is protienaceous in nature ?
3. Name the food component which is stored in the endosperm.
4. Mention the part of the seed which develops into the root.
5. Why do we call it as a 'grain' and not as a seed or fruit ?

Given alongside is a figure of the vertical section of a typical bisexual flower. Study the same and answer the following questions :

1. Label the guidelines 1 to 9.
2. Which of the above labelled parts constitute the pistil? Write the numbers and names of those parts.
3. Name the part which produces pollen grains.
4. Is it a complete/incomplete flower ? Give reason in support of your answer.
5. Write one important role of the part labelled as 6.