Complete the crossword using the clues given below.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1565813/original_crossword.PNG)
Clues across:
1. Plant that bears buds in leaves for propagation.
2. The flattened green part of leaf.
3. Underground plant part.
4. Structure that develops into flower.
Clues down:
5. The central big vein of a leaf
6. A modification seen in cactus