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प्रश्न
Choose the correct answer:
Wilting of plants occurs when ____________
पर्याय
phloem is blocked.
xylem is blocked.
a few old roots are removed.
both xylem and phloem are blocked.
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उत्तर
Wilting of plants occurs when xylem is blocked
APPEARS IN
संबंधित प्रश्न
Name the following:
Tissue concerned with upward conduction of water.
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
Process of ascent of sap in plants occurs by ______.
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
The root hair cell is in a turgid state. Name and explain the process that caused this state.
Study the experimental setup in the figure and then answer the question that follow.
Explain the phenomenon mention in question 8.1 .
The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow :
(i) Name the parts indicated by guidelines ‘1’ to ‘5’
(ii) Is the root hair cell unicellular or multi-cellular?
(iii) Draw a labeled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.
(iv) Name the process responsible for the entry of water molecules from the soil into A1 and then A2.
(v) What pressure is responsible for the movement of water in the direction indicated by arrows?
(vi) How is this pressure set up?
Name the following:
Water is absorbed from the soil by which part.
Part of the root that absorbs water from the soil is ______.
Which part of the root helps in maximum absorption of water and minerals?
Root hair is a cytoplasmic extension of ______.
