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| 1. |
What is phloem full exolanation |
| Answer» Phloem, also called bast, tissues in plants that conduct foods made in\xa0the\xa0leaves to all other parts of\xa0the\xa0plant.\xa0Phloem\xa0is composed of various specialized cells called sieve tubes, companion cells,\xa0phloem\xa0fibres, and\xa0phloem\xa0parenchyma cells.\xa0Phloem\xa0is the vascular tissue responsible for the transport of sugars from source tissues (ex. photosynthetic leaf cells) to sink tissues (ex. non-photosynthetic root cells or developing flowers). Other molecules such as proteins and mRNAs are also transported throughout the plant via\xa0phloem.\xa0Phloem\xa0cells conduct food from leaves to rest of the plant. They are alive at maturity and tend to stain green (with the stain fast green).\xa0Phloem\xa0cells are usually\xa0located\xa0outside the xylem. The two most common cells in the\xa0phloem\xa0are the companion cells and sieve cells. | |