Multiple Choice QuestionsThe plant undergoes wilting when
xylem is blocked
cambium is blocked
phloem is blocked
some roots are reduced in number
A.
xylem is blocked
Wilting The condition that arises in plants when more water is lost by evaporation than is absorbed from the soil. This causes the cells to lose their turgor and the plant structure droops. Plants can normally recover from wilting if water is added to the soil, but permanent wilting and possible death can result if the plant does not have access to water for a long period of time. In certain plants wilting is important as a mechanism to avoid overheating: when the leaves droop they are taken out of direct contact with the sun's rays. When the sun sets the plant can begin to transpire at the normal rate and the cells of the leaves regain their turgor.
Xylem is responsible for transport of water. If xylem is blocked, plant will undergo wilting
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
In higher plants, continuity of cytoplasm from one cell to its neighbouring cells is established through
apoplast
chloroplast
leucoplast
symplast
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