1. | Parenchyma | 2. | Collenchyma |
3. | Sclerenchyma | 4. | Sclereid |
I. | Gymnosperms lack vessels in their xylem. |
II. | In stems the arrangement of primary xylem is called an exarch. |
III. | Angiosperms lack sieve tubes and companion cells. |
IV. | Phloem fibres are generally absent in primary phloem. |
1. | Epiblema | 2. | Cortex |
3. | Endodermis | 4. | Pericycle |