1. Provide moisture and nutrients (N,P,K)

2. Attaches plant to the ground to support vertical growth or to climb vertical surfaces

3. Starch storage

4. Access oxygen

1. Transport nutrients/ water

2. Support of plant (to access light)

3. Photosynthesis (like in cactus)

4. Water Storage

5. Protection (Thorns = modified stems on trees and bushes)

6. Energy Storage

7. Asexual Reproduction (stolons and rhizomes)

1. Collect Light

2. Collect Water

3. Attach to other vegetation (for climbing)

4. Defense (thorns = modified leaves in cacti) 

5. Store Water

6. Obtaining Nitrogen (carnivorous/ epiphytic) 

1. Attract pollinators

2. Protect eggs, embryo and seeds

3. Promote seed dispersal (by fruit or seeds with floatations devices and the like)

1. Epidermis 

2. Palisade Mesophyll

3. Spongy mesophyll

4. Vascular bundle in spongy mesophyll

1. Cork Cells

2. Cork Cambium

3. Secondary phloem cells

4. Secondary vascular cambium

5. Secondary Xylem cells

6. Sapwood

7. Heartwood

1. Epidermis with lateral roots and root hairs

2. Cortex

3. Vascular Tissue (vascular bundle)

1. Endodermis

2. Pericycle

3. Phloem

4. Xylem

1. Root cap

2. Apical meristems

3. Primary Meristems 

1. Epidermis

2. Cortex

3. Vascular Tissue