Multiple Choice QuestionsThe plant undergoes wilting when
xylem is blocked
cambium is blocked
phloem is blocked
some roots are reduced in number
Ectophloic siphonostele is found in
Osmunda and Equisetum
Marsilea and Botrychium
Adiantum and Cucurbitaceae
Dicksonia and Maiden hair fern
Short Answer TypeMultiple Choice QuestionsLiving. cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of
osmosis
diffusion
facilitated diffusion
transpiration
A.
osmosis
When living cells are placed in isotonic solution, they retain their shape and size as such because no osmotic movement of water molecules takes place.
If a plant cell is placed in hypertonic solution, the cell gets plasmolysed due to exosmosis. On the other hand, if a plasmolysed cell is placed in hypotonic solution, endosmosis occurs and the cell gets deplasmolysed.
In higher plants, continuity of cytoplasm from one cell to its neighbouring cells is established through
apoplast
chloroplast
leucoplast
symplast
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