| Sieve-tube members are also living cells in leaves, and contain plastids but not chloroplasts. |
| In general, stromules are more abundant in tissues containing non-green plastids, and in cells containing smaller plastids. |
| This feature is especially obvious in plant cells containing both mitochondria and plastids. |
| Alternatively, embryo plastids and leaf chloroplasts were prepared as described, but without illumination. |
| These protoplasts had a thick cytoplasm with numerous plastids and mitochondria. |
| Other notable cytological features are highly pleomorphic plastids and mitochondrial aggregates in the gametophytic placental cells. |
