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प्रश्न
What are stomata?
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उत्तर
The microscopic structures found in the leaves of plants that allow the diffusion (exchange) of gases are called stomata or pores. This stomatal system is an open space or pore surrounded by two epidermal guard cells and many subsidiary cells. The cells (guard cells) control the process of closing or opening stomata.
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संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Transpiration cools the plant when it is hot outside.
Multiple choice question. Tick (✓) the correct choice:
The loss of water through the stomata of leaves is called
(a) transpiration
(b) wilting
(c) evaporation
(d) osmosis
Define the term Transpiration stream
Give suitable explanation for the following:
Perspiration and transpiration help to cool the body temperature of the organism.
Name the cell that surrounds the stoma.
______ involves evaporative loss of water from aerial parts.
Which one is not related to transpiration?
Describe briefly the three physical properties of water which helps in ascent of water in xylem.
Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in the correct form by changing either the first or the last word only.
Transpiration helps to cool the body of the plant.
