Biology
Give two examples of turgor movements in plants.
Roots Absorption
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Answer
Two examples of turgor movements in plants.
(i) The rapid dropping of the leaves of the sensitive plant Mimosa pudica, is an outstanding example of turgor movement. If one of the leaves is touched, even lightly, the leaflets fold up and within 2 to 3 seconds, the entire leaf droops. If the leaf is touched somewhat strongly, the wave of folding and drooping spreads from the stimulated leaf to all neighbouring leaves.
(ii) Turgor movements are found in insectivorous plants whose leaves close up to entrap a living prey. When the insect comes in contact with the leaf, it loses its turgor hence closing the leaves of the plant.
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Mention whether the following statements are true (T) or false (F). Correct the false statements by altering the last word only.
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(b) Cells that have lost their water content are said to be deplasmolysed.
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(d) The protoplasm shrinks, when a cell is kept in hypotonic solution.
(e) The cell wall of the root cell is a differentially permeable membrane.
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(a) Guttation is another name for bleeding in plants.
(b) Soaked seeds burst their seed coats.
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(d) Guttation in plants occurs maximum at mid-day.
(e) Raisins when submerged in water swell up due to endosmosis.
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(a) Imbibition
(b) Diffusion
(c) Osmosis
(d) Osmotic pressure
(e) Active transport
(f) Tonicity
(g) Root pressure
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If you sprinkle some common salt on grass growing on a lawn, it is killed at that spot.