In my past learnings, Sample size is no. of units in a population that need to be studied. The number of units can include animals, persons, or any specific or specified circumstances. Hope this helped..!
Answer:
1. cytoskeleton
2. Golgi apparatus
3. smooth endoplasmic reticulum
4. nucleolus
5. nucleus
6. Rough endoplasmic reticulum
7. ribosomes
8. chlorophyll
9. vacuole
10. mitochondrion
11. cytoplasm
12. adjacent cell wall
13. plasma membrane
14. outer layer (cell wall)
Answer:
the 4th one The lumen, is my guess
The stem has more things to transport that's why it has more vascular bundles. The roots only get water from the ground and moving nutrients from the soil to transfer it to the stem. Having more vascular bundles helps the stems to transfer things to leaves and other parts of the plants.