Draw the labelled diagram of cells in an onion root tip 9
Answers
Explanation:
Above figure represents the plasmolyzed epidermal cell after placing in sugar solution ( Hypertonic solution ).
(ii) Plasmolysis is a scientific term used for the above change.
Plasmolysis occurs due to shrinkage of protoplasm when a plant cell is kept in a hypertonic medium and water flows out from a cell.
(iii) To restore the cell back to its original condition, it must be placed in a hypotonic solution immediately after it gets plasmolyzed.
(iv) Deplasmolysis is a scientific term used for recovery of the cell as a result of the step taken in (iii) above.
(v) Osmosis: It is the movement of water molecules from the region of its lower concentration to the region of higher concentration through a semipermeable membrane.
Answer:
An onion is a multicellular (consisting of many cells) plant organism.As in all plant cells, the cell of an onion peel consists of a cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphery of the cytoplasm
